Hand held oral irrigator

Information

  • Patent Grant
  • 8113832
  • Patent Number
    8,113,832
  • Date Filed
    Monday, December 11, 2006
    17 years ago
  • Date Issued
    Tuesday, February 14, 2012
    12 years ago
Abstract
According to one broad aspect of one embodiment of the present invention, disclosed herein is a hand held oral irrigation device having a tip for dispensing fluids. In one example, an oral irrigation device includes a body portion, and a reservoir for storing fluids, wherein the body and/or the reservoir define a first major diameter at a lower end of the oral irrigation device, and define a second major diameter at an upper end of the oral irrigation device, the first major diameter being larger than the second major diameter. In this example, by providing such a geometry for the device, a user can grasp the device with one hand about the second major diameter during use. In another example, the body includes a pump for pumping fluids from the reservoir to the tip, wherein the pump includes an inlet valve and an outlet valve, the inlet valve including a reed valve made of flexible fabric material. The outlet valve may also include a reed valve made of flexible fabric material.
Description
FIELD OF THE INVENTION

This invention relates, in general, to devices for irrigating a person's teeth and gums.


BACKGROUND

Conventional oral irrigators typically include a large base unit having a reservoir, and a separate hand-held portion having a tip or wand that is connected to the reservoir with a tube. In use, a user directs fluid streams or pulses by pointing the tip of the hand-held portion in the desired position towards the users gum line. While the benefits of regular oral irrigation of the teeth and gums are well-known, oral irrigators having large base units can be difficult to transport, use, or store, for instance when the user is traveling, due to the size of the components.


As recognized by the present inventors, what is needed is a hand-held oral irrigator which is portable, easy to store and use, and provides a user with the benefits of oral irrigation of the teeth and gums. It is against this background that various embodiments of the present invention were developed.


SUMMARY OF THE INVENTION

According to one broad aspect of one embodiment of the present invention, disclosed herein is a hand held oral irrigation device having a tip for dispensing fluids. In one example, an oral irrigation device includes a body portion, and a reservoir for storing fluids, wherein the body and/or the reservoir define a first major diameter at a lower end of the oral irrigation device, and define a second major diameter at an upper end of the oral irrigation device, the first major diameter being larger than the second major diameter. In this example, by providing such a geometry for the device, a user can grasp the device with one hand about the second major diameter about the upper end during use. Other geometries are also possible.


In one example, the reservoir is detachable from the body so that a user can easily refill the reservoir. The reservoir may include an opening positioned at a top end, and a lid releasably secured about the opening. In one example, the reservoir has a capacity of approximately 120-200 ml of fluid.


In another example, the body may also include a motor, a pump, and a drive mechanism coupling the motor to the pump, the pump controllably delivering fluids from the reservoir to the tip. A three-way control structure may be provided having a first button for activating the motor, a second button for de-activating the motor, and a third button for releasing the tip from the body. Alternatively, an on/off control or switch may be utilized to activate and deactivate the motor.


The body may include a wall structure defining a first and second section within the body, the first section containing the pump and the second section containing the motor and the drive mechanism, wherein the first and second sections are fluidly isolated. In this way, the wall prevents fluids from reaching the motor and other electrical components within the second section in the body of the oral irrigation device.


In one example, the drive mechanism includes a pump gear coupled with the motor, wherein the pump gear includes an eccentric offset disc extending from the pump gear. A connecting rod may be coupled with the eccentric offset disc through a hollow cylindrical portion receiving the eccentric offset disc of the pump gear, and the connecting rod may include an arm extending from the cylindrical portion and a ball end positioned at the end of the arm. In this way, the eccentric rotation of the offset disc driven by the motor is converted into reciprocating motion of the connecting rod arm.


In another example, the pump may include a pump head having an inlet fluid port, an outlet fluid port, and an interior fluid channel in fluid communications with the inlet and outlet fluid ports; a pump body defining a cylindrical chamber in fluid communications with the interior fluid channel of the pump head; and a piston having a bottom portion and a top portion.


In one example, the inlet fluid port of the pump is positioned within the body at a location which is vertically lower than a location of the top or full level of fluid in the reservoir, thereby priming or self priming the pump with the fluid by force of gravity.


The bottom portion of the piston can receive the ball end of the connecting rod and the piston may be positioned within the cylindrical chamber of the pump body. In this way, the connecting rod drives the piston within the pump body to create suction/intake and compressing/exhaust cycles of the pump.


The body may include an inlet conduit fluidly coupling the reservoir with the inlet fluid port, and an outlet conduit fluidly coupling the outlet fluid port with the tip. The reservoir may include a fluid access valve fluidly coupling with the inlet conduit when the reservoir and the body are attached together.


The pump may also include an inlet fluid valve regulating fluid flow into the inlet fluid port, and an outlet fluid valve regulating fluid flow into the outlet fluid port, wherein as the piston is moved downwardly within the cylindrical chamber of the pump body, the inlet fluid valve is open, the outlet fluid valve is closed, and fluid is drawn from the inlet port (which is coupled with reservoir) into the cylindrical chamber of the pump body.


In another example, when the piston is moved upwardly within the cylindrical chamber of the pump body, the inlet fluid valve is closed, the outlet fluid valve is open, and fluid is expelled from the cylindrical chamber of the pump body to the outlet fluid valve for delivery to the tip.


In one embodiment, the pump of an oral irrigator includes at least one valve assembly having a reed valve therein. For instance, the inlet fluid valve may include a first reed valve made of flexible fabric material, and the outlet fluid valve may include a second reed valve made of flexible fabric material.


In one example, the reservoir may include a shelf portion defined about a bottom portion of the reservoir, and a base at the bottom end of the reservoir. The fluid access valve may also include a channel defined within the reservoir extending from the shelf to the base of the reservoir, the channel receiving the inlet conduit; a seal positioned about the top end of the channel; a spring extending upwardly from the base within the channel of the reservoir; a ball positioned within the channel between the seal and the spring; and a reservoir inlet conduit positioned along the base within the reservoir, the reservoir inlet conduit fluidly coupled with the channel so that fluid is drawn from the bottom of the reservoir. The spring presses the ball against the seal within the channel, and thereby prevents fluid from escaping the reservoir when the reservoir is separated from the body of the oral irrigator.


In another example, the oral irrigation device is provided with a mechanism for releasably securing a tip to the body of the oral irrigator. The tip may include an annular groove, and the body may include a tip holding structure having a cylindrical wall defining a cylindrical opening; a slot defined within the cylindrical wall; a clip having an interior lip, the interior lip positioned within the slot and extending into the cylindrical opening; and a spring for biasing the lip of the clip into the slot. In one example, when the spring is uncompressed and the tip fully inserted in the body, the lip is received within the annular groove of the tip and secures the tip to the body.


According to a broad aspect of another embodiment of the present invention, disclosed herein is a hand held oral irrigation device having a tip for dispensing fluids. In one example, the device includes a reservoir for storing fluids and a body including a pump for pumping fluids from the reservoir to the tip, wherein the pump includes an inlet valve and an outlet valve, the inlet valve including a reed valve made of flexible, non-porous fabric material. The outlet valve may also include a reed valve made of flexible, non-porous fabric material.


According to another broad aspect of another embodiment of the present invention, disclosed herein is a hand held oral irrigator including a reservoir and a body portion, the body portion containing a pump with a fluid inlet port. In one example, the pump inlet port is positioned within the body and the reservoir is shaped such that the top of the reservoir is vertically higher relative to the position of the fluid inlet port of the pump. In this way, when the reservoir is full or approximately full of fluid, the fluid level in the reservoir is higher than the position of the pump inlet port, and therefore the pump is self-priming or primed by the effect of gravity.


Other embodiments of the invention are disclosed herein. The foregoing and other features, utilities and advantages of various embodiments of the invention will be apparent from the following more particular description of the various embodiments of the invention as illustrated in the accompanying drawings and claims.





BRIEF DESCRIPTION OF THE FIGURES


FIG. 1 illustrates a hand-held oral irrigator and a battery charger, in accordance with an embodiment of the present invention.



FIG. 2 illustrates a hand-held oral irrigator with a tip attached thereto, in accordance with an embodiment of the present invention.



FIG. 3 illustrates an exploded view of an oral irrigator with a body portion, a detachable reservoir, and a detachable tip, in accordance with an embodiment of the present invention.



FIG. 4 illustrates a cross-sectional view taken along section lines 4-4 of the oral irrigator of FIG. 2, in accordance with an embodiment of the present invention.



FIG. 5 illustrates an exploded view of the body portion of an oral irrigator, in accordance with an embodiment of the present invention.



FIG. 6 illustrates various components of a fluid flow path of the body portion of an oral irrigator, in accordance with an embodiment of the present invention.



FIG. 7 illustrates a sectional view taken along sectional lines 7-7 of FIG. 5 showing various components of the fluid flow path of the body portion of an oral irrigator, in accordance with an embodiment of the present invention.



FIG. 8 illustrates an example of a reed valve used in the pump, in accordance with an embodiment of the present invention.



FIG. 9 illustrates a sectional view taken along section lines 9-9 of the inlet port of the pump of FIG. 7, in accordance with an embodiment of the present invention.



FIG. 10 illustrates a sectional view of the pump, in accordance with an embodiment of the present invention.



FIG. 11 illustrates a sectional view of the pump during an intake or suction stroke, in accordance with an embodiment of the present invention.



FIG. 12 illustrates a sectional view of the pump during an exhaust or compression stroke, in accordance with an embodiment of the present invention.



FIG. 13 illustrates a sectional view taken along section lines 13-13 of FIG. 10 showing the positions of the flaps of the reed valves, in accordance with an embodiment of the present invention.



FIG. 14 illustrates a sectional view taken along section lines 14-14 of FIG. 11 showing the positions of the flaps of the reed valves during an intake or suction stroke, in accordance with an embodiment of the present invention.



FIG. 15 illustrates a sectional view taken along section lines 15-15 of FIG. 12 showing the positions of the flaps of the reed valves during an exhaust or compression stroke, in accordance with an embodiment of the present invention.



FIG. 16 illustrates an exploded view of the reservoir, in accordance with an embodiment of the present invention.



FIG. 17 illustrates a cross sectional view of the reservoir taken along section lines 17-17 of FIG. 3 showing the reservoir lid in an open position and the fluid access valve in a closed position, in accordance with an embodiment of the present invention.



FIG. 18 illustrates a portion of the cross-sectional view of FIG. 17 showing the reservoir lid in a closed position, in accordance with an embodiment of the present invention.



FIG. 19 illustrates a cross-sectional view taken along section lines 19-19 of FIG. 17 showing the fluid access valve in detail, in accordance with an embodiment of the present invention.



FIG. 20 illustrates a sectional view along section lines 20-20 of FIG. 1.



FIG. 21 illustrates a sectional view taken along section lines 21-21 of FIG. 20, showing the fluid access valve in an open position which permits fluid from the reservoir to enter into the pump inlet conduit of the body, in accordance with an embodiment of the present invention.



FIG. 22 illustrates an exploded view of a tip which may be used with the hand-held oral irrigator, in accordance with an embodiment of the present invention.



FIG. 23 illustrates a sectional view of the tip taken along section lines 23-23 of FIG. 3.



FIG. 24 illustrates a sectional view taken along section lines 24-24 of FIG. 3 of the body portion of a hand-held oral irrigator, in accordance with an embodiment of the present invention.



FIG. 25 illustrates a portion of a sectional view of the body portion of a hand-held oral irrigator showing the tip release button in the normally locked position, in accordance with an embodiment of the present invention.



FIG. 26 illustrates a portion of a sectional view of the body portion of a hand-held oral irrigator showing the tip release button in the depressed, unlocked position, in accordance with an embodiment of the present invention.



FIG. 27 illustrates a front view of a pump gear, in accordance with an embodiment of the present invention.



FIG. 28 illustrates a top view of a pump gear, in accordance with an embodiment of the present invention.



FIG. 29 illustrates a bottom view of a pump gear, in accordance with an embodiment of the present invention.



FIG. 30 illustrates a sectional view of a pump gear taken along section lines 30-30 of FIG. 27, in accordance with an embodiment of the present invention.



FIG. 31 illustrates an example of a travel case which may be used to store a hand-held oral irrigator, a battery charger, and one or more tips or other accessories, in accordance with an embodiment of the present invention.





DETAILED DESCRIPTION

Disclosed herein are various embodiments of a hand held, compact and portable oral irrigator with a detachable and refillable reservoir, wherein various different tips may be attached to the oral irrigator. Referring to FIGS. 1-3, in one example, a hand-held oral irrigator 50 has a body 52, a detachable refillable reservoir 54 for storing fluid, and a detachable jet tip or nozzle 56 for delivering a pressurized stream of fluid to the user's teeth and gums. The body 52 and the reservoir 54 are shaped having a slender upper portion 58 so that a user can easily grasp the oral irrigator 50 about the upper portion 58, and a larger lower portion 60 which aids in the storage of fluids in the reservoir 54 as well as providing a stable platform when the oral irrigator 50 is placed on a table or surface in a vertical orientation. When coupled together as shown in FIG. 4, the body 52 and reservoir 54 form an oral irrigator 50 that has a generally oval cross-section from the lower end 62 (See FIGS. 4 and 20) to the upper end 64 (FIG. 4). At the lower end 62, the oral irrigator 50 has a larger major diameter 66 that decreases to a second, smaller major diameter 68 at a point 70 along the length of device 50, such as at a midpoint of the oral irrigator 50. The second major diameter 68 may be relatively consistent from point 70 to the upper end 64, or may increase if desired.


In one example, the reservoir 54 defines a larger major diameter 66 along the lower end 62 of the oral irrigator 50, while portions of the base 52 and reservoir 54 define a second diameter 68 being smaller than diameter 66. In one embodiment, the smaller diameter 68 defines a region about where a user may grasp or hold the oral irrigation device 50 during use.


Generally and as shown in FIGS. 4-5, the body 52 includes a three-way control structure 80 that permits the user to turn the oral irrigator 50 on or off or to release the tip 56 from the body 52, a motor 82, a drive mechanism 84, and a pump 86 connected to fluid conduits 88, 90 for drawing fluid from the reservoir 54 and delivering fluid to the tip 56. Alternatively, the body 52 may include an on/off control or switch to activate and deactivate the motor 52. The body 52 also includes a tip securing mechanism 92 (FIGS. 25, 26) that permits the user to releasably secure different tips to the body.


Referring to FIGS. 4-6, the body 52 generally includes a motor 82 and a rechargeable battery 100 that, based on the state of the control structure 80, activates a pump 86 through a drive mechanism 84 that draws fluid from the reservoir 54 and delivers the fluid to the tip 56 in a controlled and pressurized manner. In FIGS. 3-4, the control structure 80 includes a wedge shaped pad 102 with three buttons 104, 106, 108 integrated therein and adapted for depression by a user's thumb or finger. In one example, a first button 104 controls a tip release mechanism 92 (FIGS. 25, 26) for controlling the release of a tip 56 from the body 52; and a second button 106 and third button 108 selectively activate and deactivate an electrical switch or contact 110 connected through wires or conductors 112 to the positive and negative terminals 114, 116 of a rechargeable battery 100, thereby turning the oral irrigator on and off.


Referring to FIG. 5, the body 52 includes a wall structure 120 which defines a first section 122 of the interior of the body which is used to contain a self-contained fluid flow path 124 and related components, and a second section 126 of the interior of the body which is used to contain the motor 82, battery 100, charging connector 128, and other electrical components of the oral irrigator 50. The wall structure 120 maintains sections 122 and 126 isolated, which prevents fluid from entering section 126 and damaging motor 82, battery 100, or any other electrical components within section 126.


The battery 100 is electrically coupled with the motor 82 through wires 112 or other conductors. In FIG. 4, the motor 82 includes a shaft 130 that drives a motor gear 132. In one example, the motor 82 is a DC motor rotating at 8000-11200 RPM under no load conditions when 2.3 volts is applied.


In FIG. 5, the motor gear 132 is operably connected with a drive mechanism 84 for driving the pump 86. In one example and as shown in FIGS. 5 and 24, the drive mechanism 84 includes a pump gear 140, a gear pin 142, and a connecting rod 144. A motor/gear support member 146 securably attaches the motor 82 and the gear pin 142 within the body 52 of the oral irrigator 50, and maintains a fixed orthogonal orientation between the motor 82 and the pump gear 140 so that the teeth 147 of the motor gear 132 are properly aligned with the teeth 148 of the pump gear 140. The opposing end 150 of the gear pin 142 may be secured to an interior portion of the body or to an extension 152 from the wall structure 120.


Referring to FIGS. 27-30, the pump gear 140 includes an outer disc 160 having the gear teeth 148 extending therefrom, an intermediate concentric disc 162, and an offset disc 164 which acts as an eccentric shaft 166, wherein the outer disc 160 and the concentric disc 162 are both centered about a cylindrical axis 168 through which the gear pin 142 is positioned and about which the pump gear 140 rotates. As shown in FIGS. 12 and 30, the center 170 of the offset disc 164 is offset from the cylindrical axis 168 by some offset distance 172, for example 0.081 inches or 0.091 inches. The amount of the offset distance 172 will vary depending upon the desired performance of the oral irrigator 50 as well as other design parameters such as the desired fluid pressure delivery, the mechanics of the pump 86, or the rotational speed of the motor 82. In one example, the eccentric offset disc 164 has a crescent shaped opening 174 therethrough in order to control the rotational inertia of the pump gear 140 as it rotates, as well as to simplify the manufacture of the pump gear 140. In FIG. 5, a seal 176 is positioned between the pump gear 140 and the wall structure 120 about an opening 178 in the wall structure 120 to prevent any moisture from entering the second section 126 from the first section 122 about the pump gear 140.


The connecting rod 144 of the drive mechanism 84 includes a hollow cylindrical portion 180 coupled with an arm 182 terminating at a ball end 184 (FIGS. 6, 24). The hollow cylindrical portion 180 encases the eccentric shaft/offset disc 164, 166 of the pump gear 140 so as to receive the motion of the pump gear 140. In FIGS. 10 and 24, the ball end 184 of the connecting rod 144 is positioned within a curved, interior surface 190 of a recess 192 formed in a piston 194 that creates the pump 86. As the pump gear 140 rotates, the ball end 184 moves upwardly and downwardly and pivots within the recess 192 in the piston 194 as the piston 194 also moves in an upward and downward motion within a cylindrical chamber 196 of the pump 86. Hence, the connecting rod 144, attached to the piston 194 within the cylinder 196, converts the eccentric rotational movement of the offset disc 164 into linear movement and drives the piston 194 in an upward and downward motion within the cylinder 196 of the pump 86. The amount of offset distance 172 will affect the distance that the piston 194 travels within the pump body 200.


The piston 194 is sealed with the walls of the cylinder 196 but is also allowed to slide up and down in the cylinder 196 while maintaining the sealed relationship. In one example and referring to FIGS. 6 and 10, the piston 194 is generally cylindrical and has on its top surface 202 an annular flange 204 and an interior pedestal, an annular valley or recess 208 being defined between the annular flange 204 and pedestal 206. Within the pedestal 206, an interior cylindrical recess 192 is formed with a first inner diameter 210, with a second larger and convex inner diameter 212, increasing towards the lower end 214 of the piston 194. A curved interior surface 190 is provided within the interior cylindrical recess 192, between the first and second inner diameters 210, 212, for receiving the ball end 184 of the connecting rod 144 in order to form a ball joint.


Referring to FIGS. 6, 10-15, the pump 86 generally includes a pump head 220 and a pump body 200. The pump head 220 includes an inlet fluid port 222 and an outlet fluid port 224 each in fluid communications with an interior fluid channel 226. The pump body 200 defines a cylindrical chamber 196 in fluid communications with the interior fluid channel 226 of the inlet and outlet ports 222, 224. The pump 86 also includes a piston 194 and a pair of valves 230, 232 regulating the flow of fluid into and out of the inlet and outlet ports 222, 224.


The inlet fluid port 222 includes an outer ring or collar portion 240 defining an opening 242 terminating at an inner wall 244, the opening 242 having a diameter larger than the diameter of the interior fluid channel 226. The inlet port 222 also includes a protrusion 246 extending outwardly from the inner wall 244 but not extending beyond the outer ring/collar 240. In one example, the opening 242 is circular along a portion of its perimeter with a portion of its perimeter defining a straight ledge 248 (FIG. 6). The outlet fluid port 224 is defined, in one example, by a flat outer surface 250 centered about the interior fluid channel 226. A transverse fluid channel 252 (FIGS. 10-12) extends from the interior fluid channel 226 to the cylindrical chamber 196 of the pump body 200.


At one end, the cylindrical chamber 196 of the pump body 200 is in fluid communications with the interior fluid channel 226 of the pump head 220 via the transverse fluid channel 252. The opposing end 254 of the pump body is open so that the piston 194 can be inserted within the cylindrical chamber 196. As shown in FIG. 6, flanges 256, 258 extend outwardly and downwardly from the pump body 200 and act as support or securing members for securing the pump body 200 to the wall structure 120 or to the body 52.


Both the inlet and outlet ports 222, 224 of the pump 86 have annular grooves 260, 262 for receiving O-rings 264, 266 thereabout for forming fluid tight seals with the adjacent conduits 88, 90, 268 attached to the inlet and outlet ports 222, 224. In order to form a fluid tight seal between the piston 194 and the cylindrical chamber 196 within the pump body, the piston 194 is provided with a semi-hollow top portion 208 (FIGS. 10-12) that has an outer wall 270 which extends outwardly so that this top portion 208 of the piston 194 has an increasingly larger diameter when compared with the bottom portion 214 of the piston 194. In this way, the top portion 208 of the piston 194 forms a tight seal with the interior walls of the cylindrical chamber 196 of the pump body 200, while still permitting some clearance between the lower portion 214 of the piston and the interior walls of the cylindrical chamber 196 of the pump body 200.


In one embodiment, and as shown in FIGS. 6, 10-15, the pump 86 utilizes, on both its inlet and exhaust/outlet ports 222, 224, valves 230, 232, such as reed valves made from a flexible Teflon coated fiberglass tear-resistant, non-porous fabric material, such as Fluorofab 100-6 from Greenbelt Industries, which makes the pump assembly 86 simpler, lighter weight, smaller, and having less parts when compared with conventional spring-loaded valve assemblies. Further, the light weight nature of the reed valves 230, 232 also allows the valves to control/check the flow of fluid and air, thereby providing a reliable priming of the pump 86. The reed valves 230, 232 act as check valves which, when used as described herein, permit fluid to flow in only one direction. One or more reed valves 230, 232 may be used in hand held oral irrigator 50, or may also be useful for non-hand-held oral irrigators.


As shown in the example of FIG. 8, in one example a reed valve 230, 232 may include a flat piece of material with a rim 280 on a portion of its perimeter, a flap or tongue 282 with a rounded end 284 extending into the interior of the rim 280 forming a crescent shaped opening 286 between the flap 282 and the rim 280. A living hinge 288 is formed between the flap 282 and the rim 280, so that the flap 282 can move relative to the rim 280 about the hinge 288. A pair of stress/strain relief openings or slots 290 may be provided about the hinge 288 to reduce stress/strain on the hinge 288 as the flap 282 moves. A portion 292 of the perimeter of the reed valve 230, 232 may be straight, so as to fit within the inlet and outlet ports 222, 224 of the pump head 220 (FIG. 6) and ensure proper orientation within the pump 86.


As shown in FIGS. 10-12 and 13-15, the diameter of the flap 282 is selected so as to be greater than the diameter of the interior fluid channel 226 of inlet and outlet ports 222, 224 of the pump head 220. In this manner, the flaps 282 of the reed valves 230, 232 can fully seal closed the interior fluid channel 226 on either the inlet or outlet port 222, 224 during an exhaust or intake stroke of the pump 86. When the flap 282 of one of the reed valves 230, 232 is in an open position, fluid may pass through the reed valve by the flap 282 being displaced from the sealed position and through a portion of the crescent shaped opening 286 of the reed valve.


In operation, when the piston 194 is moved downwardly within the pump body 200, this creates a suction stroke where fluid is drawn or sucked from the inlet port 222 past the opened inlet reed valve 230 into the cylindrical chamber 196 of the pump body 200 (FIGS. 11, 14). During the suction stroke, the outlet reed valve 232 is sealed shut because the diameter of the flap 282 is greater than the diameter of the interior fluid channel 226, and the flap 282 is drawn under suction toward the interior fluid channel 226 which creates a seal with the edges of the outer surface 250 of the outlet port 224. When the piston 194 is moved upwardly within the pump body 200, this creates a compression or exhaust stroke wherein the fluid within the cylindrical chamber 196 of the pump body 200 is expelled or pushed out of the pump body 200 through the outlet port 224 (FIGS. 12, 15) and past the opened outlet reed valve 232. During the exhaust stroke, the inlet reed valve 230 is sealed shut because the diameter of the flap 282 is greater than the diameter of the fluid channel 300 of the inlet cap 302 and the flap 282 is pushed outwardly to seal the inlet port 222.


Within the body 52 of the oral irrigator 50, a self-contained fluid flow path is defined, in one embodiment, by various conduits 88, 90 connected between the reservoir 54, pump 86 and tip 56. Referring to FIG. 6, a cylindrical pump inlet conduit 88 receives fluid from the reservoir 54 and is in fluid communications with the inlet port 222 of the pump 86 and the outlet port 224 of the pump 86, which is in fluid communications with an outlet conduit 90 which delivers fluid to an outlet joint 304 which is in fluid communications with the tip 56. The pump inlet conduit 88 provides a channel 306 through which fluid enters the inlet port 222 of the pump body 200 through the inlet reed valve 230 during a suction stroke. In one embodiment, the pump inlet conduit 88 has an inlet cap 302 that is coupled with and around the inlet port 222 and also houses the inlet reed valve 230 and an O-ring 264 to form a fluid-tight inlet port (FIGS. 6, 7, 10, 11). The inlet reed valve 230 is positioned between the interior walls 307 of the inlet cap 302 and the outer ring 204 of the inlet port 222. During a suction stroke, the flap 282 of the reed valve 230 moves inwardly until it contacts a protrusion 246 (FIGS. 7, 9, 10) which limits the inward movement of the flap 282 (thereby opening the fluid flow path and drawing fluid into the pump body 200), but during a compression or exhaust stroke, the flap 282 of the reed valve 230 cannot move outwardly from the pump body 200 and remains closed since the interior walls 307 of the inlet cap 302 limit the outward movement of the flap 282 (FIGS. 10, 11, 12, 14, 15).


The outlet reed valve 232 is positioned between the outer surface 250 of the outlet port 224 of the pump body 200 and the inner ledge surface 308 (FIG. 10) of the outlet cap 268. A protrusion 310 from the outlet cap 268 limits the maximum movement of the flap 282 of the outlet reed 232 valve during a compression or exhaust stroke such that the flap 282 of the reed valve 232 can move outwardly (thereby opening the fluid flow path into the outlet cap 268 and outlet conduit 90) but during a suction stroke, the flap 282 of the outlet reed valve 232 is sucked inwardly and its inward movement is limited by the outer surface 250 of the outlet port 224, hence the outlet port 224 remains closed, which prevents fluid from the outlet port 224 and outlet conduit 90 from being drawn into the pump body 200 (FIGS. 11, 12, 14, 15).


The outlet cap 268 defines an L-shaped fluid channel 312 therein and is coupled with a cylindrically shaped outlet conduit 90 (FIGS. 5, 7). Both the inlet cap 302 and the outlet cap 268 can be secured to the pump body 200 through a screw 314 as shown in FIGS. 6, 10. The outlet conduit 90 is fluidly coupled with an outlet joint 304 which is in fluid communications with the tip 56. In FIG. 24, a tip holding structure 320, with a U-322 positioned along its lower edge to form a seal between structure 320 and the interior of outlet joint 304, receives various tips 56 which can be inserted therein for delivering fluid to the user's teeth or gums.


Referring now to FIGS. 16-21, a detachable, refillable reservoir 54 is illustrated in accordance with one embodiment of the present invention. As shown in FIG. 16, the reservoir 54 is generally elongated with a top portion 330 having a cross-section generally smaller than a cross-section of the bottom portion 332 of the reservoir 54. Due to this geometry, when the body 52 and reservoir 54 are connected together for operation, a user can easily hold the oral irrigator 50 in the user's hand about the top portion 330 of the reservoir 54.


In one example, the reservoir 54 may be removed from the body 52 of the oral irrigator 50 as the user desires, for instance, when the user wishes to refill the reservoir 54. Alternatively, the user may refill the reservoir 54 without disconnecting the reservoir 54 from the body 52.


On the interface portion 334 of the reservoir 54 (FIGS. 3, 16) adapted to contact or connect with the body 52, a pair of slots or grooves 336 are defined axially for slidably receiving the corresponding pair of parallel tongues or rails 338 (FIG. 5) extending from the body 52 of the oral irrigator 50. In one example, the top end 340 of the reservoir 54 is provided with an opening 342 for refilling the reservoir 54 with fluid such as water or other fluids. An end cap 344 with an opening 346 may be affixed to the top end 340 of the reservoir 54 and defines two pivot points or protrusions 348 about which a lid 350 with indentations 352 corresponding to the protrusions 348 can rotate upwardly or downwardly about the protrusions 348 as desired. A seal 354 with o-ring 355 can be affixed to the bottom portion 356 of the lid 350, or alternatively on the top portion of the opening 346, in order to sealably engage in the opening 346 of the end cap 344 so that when the lid 350 and seal 354 are in the closed position, a fluid tight seal is formed about the top end 340 of the reservoir 54 (FIG. 18). As shown in FIG. 16, one or more vent holes 358 are provided in the top of the reservoir end cap 344 in order to admit air into the reservoir 54 so that a vacuum is not created as fluid is pumped from the reservoir 54 through the tip 56.


In one embodiment, the reservoir 54 is formed with a base 360 having a biased-closed fluid access valve 362 positioned on an interior shelf 364 of the reservoir 54 (FIGS. 16, 17, 19, 21). The fluid access valve 362 is normally closed and may be opened via contact with the pump inlet conduit 88 of the body 52 (FIG. 21). In one example, the fluid access valve 362 includes a vertically oriented cylindrical channel 366 defined within the reservoir 54 having an opening 367 at one end 368 for receiving a portion of a reservoir inlet conduit 370, and an opening 372 at the other end terminating on the interior shelf 364 of the reservoir 54 where a seal 374 with a cylindrical opening is positioned. Within the cylindrical channel 366, a ball 376 is pressed upwardly against the bottom of the seal 374 by a spring 378 which is maintained in position by an upwardly extending portion 380 of the reservoir inlet conduit 370 when positioned within the opening 367 of the cylindrical channel 366. An o-ring 382 is positioned about an annular recess 384 about the upwardly extending portion 380 of the reservoir inlet conduit 370.


When the reservoir 54 is separated from the body 52 of oral irrigator 50, the spring 378 presses the ball 376 against the seal 374 within channel 366, thereby preventing fluid from escaping reservoir 54.


Due to the positioning of the components of the fluid flow path within the reservoir 54 and the body 52, the pump 86 is self-priming which provides fast and rapid delivery of fluid stored in the reservoir 54 to the tip 56 during operation of the hand-held oral irrigator 50. The reservoir inlet conduit 370 is positioned on the base 360 of the reservoir 54 and defines an L-shaped fluid channel (FIG. 17) which receives fluid at its input 386 and guides, when the pump 86 is in suction mode, fluid to its upwardly extending portion 380 which is contained within the cylindrical channel 366. Accordingly, as the user fills the reservoir 54 with fluid, fluid immediately enters the input 386 of the reservoir inlet conduit 370, and as the fluid level within the reservoir 54 rises to above the level of the shelf 364, the fluid level within the cylindrical channel 366 also rises.


As shown in FIG. 21, when the body 52 of the oral irrigator 50 is slidably connected with the reservoir 54, the tip 388 of the pump inlet conduit 88 enters the opening 372 of the seal 374 and engages the ball 376 which compresses the spring 378 and allows fluid to enter the interior of the pump inlet conduit 88 through the slot 390 in the pump inlet conduit 88.


As the fluid level within the reservoir 54 is, for instance, at or near a full level, the fluid pressure formed by gravitational force or potential energy has a tendency to force the fluid upwards and out of the fluid access valve 362 whenever fluid access valve 362 is in an open position through contact with tip 388 of pump inlet conduit 88. Accordingly, when the reservoir 54 is at or near a full fluid level and the tip 388 of the pump inlet conduit 88 contacts and depresses the ball/spring 376, 378 of the fluid access valve 362, fluid flows upwardly into the inlet port 222 of the pump body 200 and primes the pump body 200 with fluid because the level of the fluid in the reservoir 54 is higher than the level of the inlet port 222 of the pump 86. This self priming effect occurs without reliance on the operation of the pump 86. When the user activates the oral irrigator 50 and the motor 82 activates the pump 86 to cycle between its suction and exhaust strokes, fluid is delivered to the tip 56 quickly and rapidly due to the fact that the pump 86 has been primed with fluid.


Various tips 56 can be detachably secured with the oral irrigator through the use of a tip release mechanism 92 illustrated in FIGS. 4, 24-26. One example of a tip 56 is illustrated in FIGS. 22-23, wherein the tip 56 is generally elongated with a cylindrical bore 400 through which fluid flows from the bottom 402 to the top 404 of the tip 56, and has an annular flange 406 upon which an identification or color-coded ring 408 rests which users may utilize to personalize or identify their tips 56. Further, a tip 56 may include an annular groove 410 defined in the lower portion 412 of the tip 56 which is used in combination with the tip release mechanism 92 for securely attaching the tip 56 to the body 52 of the oral irrigator 50. A restrictor 412 may be included within the bottom end 402 of the tip 56 for controlling the volume and rate of fluid flow through the tip 56. For instance, tips 56 having different sizes or differing restrictor 412 sizes may be provided with the oral irrigator 50 in order to permit the user to control the pressure at which the stream of fluid is delivered to the user's teeth or gums. For instance, in one example, a tip 56 characterized by an orifice size of 0.035 inches with a 0.030 inch diameter restrictor 412 has been found to provide pressure of approximately 64 psi, while in another example a tip 56 characterized by an orifice size of 0.026 inches with a 0.025 inch diameter restrictor 412 has been found to provide pressure of approximately 48-52 psi.


Referring now to FIGS. 24-26, the tip release mechanism 92 will now be described. The upper portion of the body 52 includes an opening 420 into which a tip control knob 422 is inserted which provides an interior surface 424 to engage and initially guide the tip 56 within the opening 420. The tip holding structure 320, which is generally cylindrical in shape, receives the bottom portion of the tip 56 as it is inserted into the body 52. In one example, the tip holding structure 320 includes an opening or slot 426 through a portion of its perimeter through which an interior lip 428 of a tip securing clip 430 may pass.


The tip securing clip 430 and spring 432 (FIGS. 5, 25, 26) are provided such that as a tip 56 is inserted into the opening 420 of the tip holding structure 320, the outer walls of the bottom portion of the tip 56 push outwardly on the lip 428 of the clip and compress the spring 432, and when the lower portion of the tip 56 is fully inserted into the opening 420 of the tip holding structure 320, the interior lip 428 of the clip 430 is received in the annular groove 410 of the tip 56 to provide the user with tactile and/or audible feedback that the tip has been completely and properly inserted in the body 52 (FIG. 25). The clip 430 is biased in this position under the force of the spring 432. Further, if the groove 410 is continuous around the tip 56, once the tip 56 has been fully inserted into the body 52, the tip 56 may be oriented or rotated as desired by the user.


When a user wishes to remove the tip 56 from the body 52, the user depresses a tip release button 104 (which is preferably part of the 3-way control structure 80) on the body 52 which pushes on a protrusion 434 of the tip securing clip 430, the protrusion 434 preferably located 180 degrees opposite the lip 428 of the clip 430. By moving the clip 430 towards the spring 432, the spring 432 is compressed which disengages the lip 428 of the clip 430 from the annular slot 410 of the tip 56 so that the tip 56 may be removed from the body 52 (FIG. 26).


In order to control the pressure of the fluid stream delivered to a user's teeth and gums, various tips 56 with differing orifice diameters may be used, with or without restrictors 412. For example, a jet tip 56 having orifice sizes of 0.026 inches for low-pressure (which may be used with a restrictor of 0.030 or 0.025 inch diameters, for example), 0.035 inches for low-pressure, or 0.026 inches for high-pressure, for example. A battery 100 (FIG. 4) such as a NiCad battery, such as a pair of 4/5SC NiCad rechargeable batteries, may be used, in one example. A charger 436 can be used to recharge the battery 100 in the oral irrigation device 50 through a door 438 which provides access to charger connection 128.


Reducing the motor speed may also reduce the pressure of the delivered fluid, and in one embodiment, the control 80 of FIG. 2 permits the user to select a low or high motor speed by correspondingly altering the voltage level applied to the motor. Furthermore, the offset 172 of the eccentric shaft 164, 166 used to drive the piston 194 (FIGS. 27-30) may also be selected to achieve a desired pressure or pulsation frequency. In one example, a 0.081 inch offset achieves a pulse rate of 1670 pulses/minute in a high frequency application and 1860 pulses/minute in a low frequency application, while a 0.091 inch offset achieves a pulse rate of 1750 pulses/minute in a high frequency application and 1920 pulses/minute in a low frequency application.


Pressure control may also be provided through the use of an adjustable valve located in the tip 56. In one example, a valve with a dial, such as a barrel valve, is provided in the tip 56 which permits a user to selectively adjust the pressure as the fluid stream passes through the valve in the tip 56, thereby regulating the overall pressure of the fluid as delivered by the oral irrigator 50.


By way of example only, an oral irrigator 50 may include a reservoir 54 having a capacity of approximately 120-200 ml (i.e., 150 ml), and delivering a flow rate of approximately 300 to 321 ml/minute when used with a high-pressure tip, resulting in approximately 30 seconds of irrigation when used with a full reservoir 54. Using a low pressure tip, the pressures may include 48-66 psi, in one example, resulting in approximately 27-35 seconds of irrigation when used with a full reservoir 54.


Accordingly, as described above, it can be seen that various embodiments of the present invention may be used to form a hand held, portable oral irrigator with a detachable and refillable reservoir wherein various different tips may be attached to the oral irrigator. The compact and portable nature of embodiments of the present invention permit use of a travel case 440 (FIG. 31) to store and carry a hand held oral irrigator 50, a battery charger 442, and one or more tips 56 or other accessories in accordance with various embodiments of the present invention.


All directional references used herein (e.g., upper, lower, upward, downward, left, right, leftward, rightward, top, bottom, above, below, vertical, horizontal, clockwise, and counterclockwise) are only used for identification purposes to aid the reader's understanding of the present invention, and do not create limitations, particularly as to the position, orientation, or use of the invention.


While the invention has been particularly shown and described with reference to various embodiments thereof, it will be understood by those skilled in the art that various other changes in the form and details may be made without departing from the spirit and scope of the invention.

Claims
  • 1. A hand-held oral irrigation device, comprising a body comprising a body top surface; a body bottom surface; andat least one body sidewall connecting the body top surface and the body bottom surface;a tip detachably connected to the body;a reservoir for storing a fluid removably coupled with the body;a pump contained within the body and operative to draw the fluid from the reservoir, through the body bottom surface, and propel the fluid to the tip, the pump comprising an interior fluid channel disposed between the tip and the reservoir;a first valve regulating fluid flow into the interior channel from the reservoir, the first valve comprising a first rim defined on a portion of a perimeter of the first valve;a first flap portion extending into a space defined by an interior edge of the first rim so as to define a crescent-shaped opening between the first flap portion and the first rim; anda first hinge portion between the first flap portion and the first rim, the first hinge portion configured to allow the first flap portion to move relative to the first rim;a second valve regulating fluid flow from the interior channel to the tip, the second valve comprising a second rim defined on a portion of a perimeter of the second valve;a second flap portion extending into a space defined by an interior edge of the second rim so as to define a crescent-shaped opening between the second flap portion and the second rim;a second hinge portion between the second flap portion and the second rim, the second hinge portion being configured to allow the first flap portion to move relative to the first rim;a pump body defining a chamber in fluid communication with the interior fluid channel;a piston positioned within the chamber of the pump body, wherein when the piston moves downwards within the chamber the first valve is open and the second valve is closed, and when the piston moves upwards within the chamber the second valve is open and the first valve is closed;a pump gear comprising a first disc portion; anda second disc portion extending from the first disc portion, wherein the second disc portion is offset relative to a center axis of the first disc portion;a gear pin coaxial with an axis of the first disc portion and about which the pump gear rotates; anda connecting rod comprising a ball end, wherein the ball end is operatively connected to the piston; anda cylindrical end, wherein the cylindrical end is operatively connected to the second disc portion;wherein when the pump gear rotates, the ball end moves in an upward and downward motion within the chamber.
  • 2. The hand-held oral irrigation device of claim 1, wherein the tip is detachably connected to the body top surface.
  • 3. The hand-held oral irrigation device of claim 2, wherein the reservoir comprises a reservoir base;a reservoir vertical support adjacent the reservoir base;a fluid chamber at least partially defined by the reservoir base and the reservoir vertical support;and the body bottom surface detachably rests against the reservoir base when the body is coupled to the reservoir.
  • 4. The hand-held oral irrigation device of claim 3, wherein a longitudinal axis of the tip is substantially parallel to a longitudinal axis of the body and a longitudinal axis of the reservoir.
  • 5. The hand-held oral irrigation device of claim 1, wherein the body is detachably connected to the reservoir.
  • 6. The hand-held oral irrigation device of claim 5, wherein the pump is situated between the tip and reservoir.
  • 7. The hand-held oral irrigation device of claim 1, further comprising an inlet channel formed in the reservoir and operative to convey fluid from the reservoir to the pump;a seal adjacent the inlet channel, the seal selectively preventing fluid from flowing through the inlet channel; andan inlet conduit operably connected to the pump and, when the body is coupled with the reservoir, the inlet conduit opens the seal and permits fluid flow through the inlet channel.
  • 8. The hand-held oral irrigation device of claim 7, wherein the seal comprises a stopper element; anda biasing element operative to bias the stopper to close the inlet channel.
  • 9. The hand-held oral irrigation device of claim 8, wherein the stopper element is a sphere; andthe biasing element is a spring.
  • 10. The hand-held oral irrigation device of claim 8, wherein the inlet conduit comprises a tip configured to engage the stopper element, the tip defining a slot configured to allow fluid to enter the inlet channel when the tip engages the stopper element.
  • 11. The hand-held oral irrigation device of claim 7, wherein the seal remains open during operation of the pump.
  • 12. The hand-held oral irrigation device of claim 1, wherein when the first valve is open, the second valve is closed and fluid is drawn from the reservoir into the chamber of the pump body.
  • 13. The hand-held oral irrigation device of claim 1, wherein the first valve further comprises at least one first stress aperture operatively connected to the first hinge portion.
  • 14. The hand-held oral irrigation device of claim 1, wherein the second valve further comprises at least one second stress aperture operatively connected to the second hinge portion.
  • 15. A hand-held oral irrigation device comprising a body defining a body chamber having a body bottom surface and a body top surface;a tip detachably connected to the body top surface;a reservoir for storing a fluid removably coupled with the bodya pump contained within the body chamber and operative to draw the fluid from the reservoir through the body bottom surface and propel the fluid to the tip, the pump including an interior fluid channel disposed between the tip and the reservoir;a first valve regulating fluid flow into the interior channel from the reservoir;a second valve regulating fluid flow from the interior channel to the tip;a pump body defining a chamber in fluid communication with the interior fluid channel; anda piston positioned within the chamber of the pump body, wherein when the piston moves downwards within the chamber the first valve is open and the second valve is closed, and when the piston moves upwards within the chamber the second valve is open and the first valve is closed;a pump gear comprising a first disc portion; anda second disc portion extending from the first disc portion, wherein the second disc portion is offset relative to a center axis of the first disc portion;a gear pin coaxial with an axis of the first disc portion and about which the pump gear rotates; anda connecting rod comprising a ball end, wherein the ball end is operatively connected to the piston; anda cylindrical end, wherein the cylindrical end is operatively connected to the second disc portion;wherein when the pump gear rotates, the ball end moves in an upward and downward motion within the chamber.
  • 16. A portable oral irrigator comprising a body defining a body chamber having a body bottom surface and a body top surface;a tip detachably connected to the body top surface;a reservoir for storing a fluid removably coupled with the body;a pump contained within the body chamber and operative to draw the fluid from the reservoir through the body bottom surface and propel the fluid to the tip and including a pump body defining a chamber;a piston positioned within the chamber of the pump body; a pump gear comprisinga first disc portion; anda second disc portion extending from the first disc portion, wherein the second disc portion is offset relative to a center axis of the first disc portion;a gear pin coaxial with an axis of the first disc portion and about which the pump gear rotates; anda connecting rod comprising a ball end, wherein the ball end is operatively connected to the piston; anda cylindrical end, wherein the cylindrical end is operatively connected to the second disc portion;wherein when the pump gear rotates, the ball end moves in an upward and downward motion within the chamber;a reservoir inlet channel formed in the reservoir and operative to convey fluid from the reservoir to the pump chamber;a reservoir valve adjacent the reservoir inlet channel, the reservoir valve selectively preventing fluid from flowing through the inlet channel;a pump inlet conduit operably connected to the pump and when the body is coupled with the reservoir, the pump inlet conduit opens the reservoir valve and permits fluid to flow through the reservoir inlet channel; andan interior channel contained within the body and operative to convey fluid from the reservoir inlet channel to the tip;a pump inlet valve disposed within the interior channel comprising an inlet rim defined on a portion of a perimeter of the pump inlet valve;an inlet flap extending into a space defined by an interior edge of the inlet rim and defining a u-shaped opening between the inlet flap and the inlet rim;an inlet hinge operably connecting the inlet flap to the inlet rim and being configured to allow the inlet flap to move relative to the inlet rim; andat least one inlet stress aperture operatively connected to the inlet hinge;
CROSS-REFERENCE TO RELATED APPLICATION

This application is a continuation patent application of U.S. patent application Ser. No. 10/749,675, filed on Dec. 30, 2003 and entitled “Hand Held Oral Irrigator”; which claims the benefit, under 35 U.S.C. §119(e), of U.S. Provisional Patent Application No. 60/437,300, filed on Dec. 31, 2002 and entitled “Hand Held Oral Irrigator”; the disclosures of which are hereby incorporated herein in their entireties.

US Referenced Citations (355)
Number Name Date Kind
555588 Spencer Mar 1896 A
1278225 Schamberg Sep 1918 A
1498267 Hachman Jun 1924 A
1650686 Binks Nov 1927 A
1681320 Bergl et al. Aug 1928 A
1933454 Sidney Oct 1933 A
2669233 Friend Feb 1954 A
2794437 Tash Jun 1954 A
2783919 Ansell Mar 1957 A
2984452 Hooper May 1961 A
3089490 Goldberg May 1963 A
3096913 Jousson Jul 1963 A
3144867 Trupp et al. Aug 1964 A
3209956 McKenzie Oct 1965 A
3216619 Richards et al. Nov 1965 A
3225759 Drapen et al. Dec 1965 A
3227158 Mattingly Jan 1966 A
3297558 Hillquist Jan 1967 A
D208778 Koch Oct 1967 S
D209395 Gilbert Nov 1967 S
3370214 Aymar Feb 1968 A
3391696 Woodward Jul 1968 A
3400999 Goldstein Sep 1968 A
3418552 Holmes Dec 1968 A
3420228 Kalbfeld Jan 1969 A
3453969 Mattingly Jul 1969 A
3465751 Powers Sep 1969 A
3487828 Troy Jan 1970 A
3489268 Meierhoefer Jan 1970 A
3496933 Lloyd Feb 1970 A
3499440 Gibbs Mar 1970 A
3501203 Falk Mar 1970 A
3502072 Stillman Mar 1970 A
3517669 Buono et al. Jun 1970 A
D218270 Soper Aug 1970 S
3522801 Robinson Aug 1970 A
3536065 Moret Oct 1970 A
3537444 Garn Nov 1970 A
3538950 Porteners Nov 1970 A
3547110 Balamuth Dec 1970 A
3572375 Rosenberg Mar 1971 A
3578884 Jacobson May 1971 A
3583609 Oppenheimer Jun 1971 A
3590813 Roszyk Jul 1971 A
3608548 Lewis Sep 1971 A
3636947 Balamuth Jan 1972 A
3651576 Massa Mar 1972 A
3703170 Ryckman, Jr. Nov 1972 A
3747595 Grossan Jul 1973 A
3768472 Hodosh et al. Oct 1973 A
3783364 Gallanis et al. Jan 1974 A
3809977 Balamuth et al. May 1974 A
3827147 Condon Aug 1974 A
3840795 Roszyk et al. Oct 1974 A
3854209 Franklin et al. Dec 1974 A
3874506 Hill et al. Apr 1975 A
3912125 Acklin Oct 1975 A
3943628 Kronman et al. Mar 1976 A
3973558 Stouffer et al. Aug 1976 A
4001526 Olson Jan 1977 A
4004302 Hori Jan 1977 A
4007739 Bron et al. Feb 1977 A
D246667 Mackay et al. Dec 1977 S
4060870 Cannarella Dec 1977 A
4075761 Behne et al. Feb 1978 A
4078558 Woog et al. Mar 1978 A
4108167 Hickman et al. Aug 1978 A
4108178 Betush Aug 1978 A
4109650 Peclard Aug 1978 A
4141352 Ebner et al. Feb 1979 A
4144646 Takemoto et al. Mar 1979 A
4149315 Page, Jr. et al. Apr 1979 A
4154375 Bippus May 1979 A
4160383 Rauschenberger Jul 1979 A
4182038 Fleer Jan 1980 A
4201200 Hubner May 1980 A
4215476 Armstrong Aug 1980 A
4219618 Leonard Aug 1980 A
4227878 Lohn Oct 1980 A
4229634 Hickman et al. Oct 1980 A
4236889 Wright Dec 1980 A
4248589 Lewis Feb 1981 A
4249899 Davis Feb 1981 A
4262799 Perrett Apr 1981 A
4266934 Pernot May 1981 A
4276023 Phillips et al. Jun 1981 A
4276880 Malmin Jul 1981 A
4302186 Cammack et al. Nov 1981 A
4303064 Buffa Dec 1981 A
4303070 Ichikawa et al. Dec 1981 A
4315741 Reichl Feb 1982 A
4319568 Tregoning Mar 1982 A
4331422 Heyman May 1982 A
4337040 Cammack et al. Jun 1982 A
4340365 Pisanu Jul 1982 A
4340368 Lococo Jul 1982 A
D266117 Oberheim Sep 1982 S
4363626 Schmidt et al. Dec 1982 A
4365376 Oda et al. Dec 1982 A
4370131 Banko Jan 1983 A
4374354 Petrovic et al. Feb 1983 A
4382167 Maruyama et al. May 1983 A
4382786 Lohn May 1983 A
D270000 Ketler Aug 1983 S
4412823 Sakai et al. Nov 1983 A
4442830 Markau Apr 1984 A
4442831 Trenary Apr 1984 A
4452238 Kerr Jun 1984 A
4454866 Fayen Jun 1984 A
4512769 Kozam et al. Apr 1985 A
4517962 Heckele May 1985 A
4531912 Schuss et al. Jul 1985 A
4531913 Taguchi Jul 1985 A
4534340 Kerr et al. Aug 1985 A
4552130 Kinoshita Nov 1985 A
D283374 Cheuk-Yiu Apr 1986 S
4585415 Hommann Apr 1986 A
4591777 McCarty et al. May 1986 A
4592728 Davis Jun 1986 A
4602906 Grunenfelder Jul 1986 A
4607627 Leber et al. Aug 1986 A
4613074 Schulze Sep 1986 A
4619612 Weber et al. Oct 1986 A
4629425 Detsch Dec 1986 A
4636198 Stade Jan 1987 A
4644937 Hommann Feb 1987 A
4645488 Matukas Feb 1987 A
4647831 O'Malley et al. Mar 1987 A
4648838 Schlachter Mar 1987 A
4650475 Smith et al. Mar 1987 A
4655198 Hommann Apr 1987 A
4669453 Atkinson et al. Jun 1987 A
4672953 DiVito Jun 1987 A
4673396 Urbaniak Jun 1987 A
D291354 Camens Aug 1987 S
4716352 Hurn et al. Dec 1987 A
4770632 Ryder et al. Sep 1988 A
4783321 Spence Nov 1988 A
4787845 Valentine Nov 1988 A
4787847 Martin et al. Nov 1988 A
4798292 Hauze Jan 1989 A
4803974 Powell Feb 1989 A
4804364 Dieras et al. Feb 1989 A
4818229 Vasile Apr 1989 A
4820152 Warrin et al. Apr 1989 A
4821923 Skorka Apr 1989 A
4824368 Hickman Apr 1989 A
4826431 Fujimura et al. May 1989 A
4832683 Idemoto et al. May 1989 A
4854869 Lawhorn Aug 1989 A
4861340 Smith et al. Aug 1989 A
4862876 Lih-Sheng Sep 1989 A
4869720 Chernack Sep 1989 A
4880382 Moret et al. Nov 1989 A
4886452 Lohn Dec 1989 A
4902225 Lohn Feb 1990 A
4903687 Lih-Sheng Feb 1990 A
4906187 Amadera Mar 1990 A
4907744 Jousson Mar 1990 A
4925450 Imonti et al. May 1990 A
4928675 Thornton May 1990 A
4930660 Porteous Jun 1990 A
4941459 Mathur Jul 1990 A
4950159 Hansen Aug 1990 A
4958629 Peace et al. Sep 1990 A
4958751 Curtis et al. Sep 1990 A
4961698 Vlock Oct 1990 A
4966551 Betush Oct 1990 A
4969874 Michel et al. Nov 1990 A
4973247 Varnes et al. Nov 1990 A
4973250 Milman Nov 1990 A
4975054 Esrock Dec 1990 A
4979503 Chernack Dec 1990 A
4979504 Mills Dec 1990 A
4989590 Baum et al. Feb 1991 A
4998880 Nerli Mar 1991 A
5013241 Von Gutfeld et al. May 1991 A
5014884 Wunsch May 1991 A
5019054 Clement et al. May 1991 A
5027798 Primiano Jul 1991 A
5029576 Evans, Sr. Jul 1991 A
5033961 Kankler et al. Jul 1991 A
D318918 Hartwein Aug 1991 S
5049071 Davis et al. Sep 1991 A
5060825 Palmer et al. Oct 1991 A
5064168 Raines et al. Nov 1991 A
5082443 Lohn Jan 1992 A
5086756 Powell Feb 1992 A
5095893 Rawden, Jr. Mar 1992 A
5098291 Curtis et al. Mar 1992 A
5125835 Young Jun 1992 A
5127831 Bab Jul 1992 A
5142723 Lustig et al. Sep 1992 A
5150841 Silvenis et al. Sep 1992 A
5172810 Brewer Dec 1992 A
5173273 Brewer Dec 1992 A
5183035 Weir Feb 1993 A
5197458 Ito et al. Mar 1993 A
5197460 Ito et al. Mar 1993 A
5199871 Young Apr 1993 A
5203697 Malmin Apr 1993 A
5203769 Clement et al. Apr 1993 A
5204004 Johnston et al. Apr 1993 A
5208933 Lustig et al. May 1993 A
5218956 Handler et al. Jun 1993 A
5220914 Thompson Jun 1993 A
5228646 Raines Jul 1993 A
5230624 Wolf et al. Jul 1993 A
5232687 Geimer Aug 1993 A
5235968 Woog Aug 1993 A
5246367 Ito et al. Sep 1993 A
5252064 Baum et al. Oct 1993 A
5257933 Jousson Nov 1993 A
D341943 Si-Hoe Dec 1993 S
5267586 Jankavaara Dec 1993 A
5269684 Fischer Dec 1993 A
5281137 Jousson Jan 1994 A
5281139 Frank et al. Jan 1994 A
5282745 Wiltrout et al. Feb 1994 A
5286192 Dixon Feb 1994 A
5286201 Yu Feb 1994 A
5297962 O'Connor et al. Mar 1994 A
D346212 Hosl Apr 1994 S
5302123 Bechard Apr 1994 A
5317691 Traeger May 1994 A
5321865 Kaeser Jun 1994 A
5331704 Rosen et al. Jul 1994 A
5344317 Pacher et al. Sep 1994 A
5346677 Risk Sep 1994 A
D351892 Wolf et al. Oct 1994 S
5360338 Waggoner Nov 1994 A
5368548 Jousson Nov 1994 A
5370534 Wolf et al. Dec 1994 A
D354168 Hartwein Jan 1995 S
5378149 Stropko Jan 1995 A
5380201 Kawata Jan 1995 A
D356864 Woog Mar 1995 S
5399089 Eichman et al. Mar 1995 A
D358883 Vos May 1995 S
5456672 Diederich et al. Oct 1995 A
5468148 Ricks Nov 1995 A
5470305 Arnett et al. Nov 1995 A
5474450 Chronister Dec 1995 A
5474451 Dalrymple et al. Dec 1995 A
5476379 Disel Dec 1995 A
5484281 Renow et al. Jan 1996 A
5487877 Choi Jan 1996 A
5490779 Malmin Feb 1996 A
5505916 Berry, Jr. Apr 1996 A
D369656 Vos May 1996 S
5525058 Gallant et al. Jun 1996 A
5526841 Detsch et al. Jun 1996 A
5540587 Malmin Jul 1996 A
5547374 Coleman Aug 1996 A
D373631 Maeda et al. Sep 1996 S
5554025 Kinsel Sep 1996 A
5616028 Hafele et al. Apr 1997 A
5634791 Matsuura et al. Jun 1997 A
5636987 Serfaty Jun 1997 A
5640735 Manning Jun 1997 A
5653591 Loge Aug 1997 A
5667483 Santos Sep 1997 A
5697784 Hafele et al. Dec 1997 A
5709545 Johnston et al. Jan 1998 A
5716007 Nottingham et al. Feb 1998 A
5749726 Kinsel May 1998 A
5759502 Spencer et al. Jun 1998 A
5795153 Rechmann Aug 1998 A
5851079 Horstman et al. Dec 1998 A
D403511 Serbinski Jan 1999 S
D406334 Rosenthal et al. Mar 1999 S
5876201 Wilson et al. Mar 1999 A
5934902 Abahusayn Aug 1999 A
D413975 Maeda Sep 1999 S
D417082 Classen et al. Nov 1999 S
5993402 Sauer et al. Nov 1999 A
6030215 Ellion et al. Feb 2000 A
6039180 Grant Mar 2000 A
D425615 Bachman et al. May 2000 S
D425981 Bachman et al. May 2000 S
6056710 Bachman et al. May 2000 A
D426633 Bachman et al. Jun 2000 S
6089865 Edgar Jul 2000 A
6124699 Suzuki et al. Sep 2000 A
D434500 Pollock et al. Nov 2000 S
6159006 Cook et al. Dec 2000 A
D435905 Bachman et al. Jan 2001 S
6193932 Wu et al. Feb 2001 B1
D439781 Spore Apr 2001 S
6217835 Riley et al. Apr 2001 B1
D441861 Hafliger May 2001 S
6234205 D'Amelio et al. May 2001 B1
6247929 Bachman et al. Jun 2001 B1
D449884 Tobin et al. Oct 2001 S
6468482 Frieze et al. Oct 2002 B1
6475173 Bachman et al. Nov 2002 B1
6497572 Hood et al. Dec 2002 B2
6502584 Fordham Jan 2003 B1
D470660 Schaber Feb 2003 S
6558344 McKinnon et al. May 2003 B2
6561808 Neuberger et al. May 2003 B2
D475346 McCurrach et al. Jun 2003 S
6589477 Frieze et al. Jul 2003 B1
6602071 Ellion et al. Aug 2003 B1
6632091 Cise et al. Oct 2003 B1
D482451 Page et al. Nov 2003 S
6640999 Peterson Nov 2003 B2
6659674 Carlucci et al. Dec 2003 B2
6669059 Mehta Dec 2003 B2
D486573 Callaghan et al. Feb 2004 S
6689078 Rehkemper et al. Feb 2004 B1
6699208 Bachman et al. Mar 2004 B2
6719561 Gugel et al. Apr 2004 B2
D489183 Akahori et al. May 2004 S
6739782 Rehkemper et al. May 2004 B1
D490899 Gagnon Jun 2004 S
D492996 Rehkemper et al. Jul 2004 S
6761324 Chang Jul 2004 B2
6766549 Klupt Jul 2004 B2
D495142 Berde Aug 2004 S
D495143 Berde Aug 2004 S
6779216 Davies et al. Aug 2004 B2
6783004 Rinner Aug 2004 B1
6796796 Segal Sep 2004 B2
6814259 Foster et al. Nov 2004 B1
D499885 Xi Dec 2004 S
6884069 Goldman Apr 2005 B2
D509585 Kling et al. Sep 2005 S
D513638 Pan Jan 2006 S
D530010 Luettgen et al. Oct 2006 S
7117555 Fattori et al. Oct 2006 B2
D533720 Vu Dec 2006 S
7147468 Snyder et al. Dec 2006 B2
D538474 Sheppard et al. Mar 2007 S
D548334 Izumi Aug 2007 S
D550097 Lepoitevin Sep 2007 S
D565175 Boyd et al. Mar 2008 S
D601697 Sobeich et al. Oct 2009 S
D603708 Handy Nov 2009 S
D629884 Stephens Dec 2010 S
7862536 Chen et al. Jan 2011 B2
7959597 Baker et al. Jun 2011 B2
20030098249 Rollock May 2003 A1
20030213075 Hui et al. Nov 2003 A1
20040122377 Fischer et al. Jun 2004 A1
20040209222 Snyder et al. Oct 2004 A1
20050004498 Klupt Jan 2005 A1
20050098565 Snyder et al. May 2005 A1
20050271531 Brown et al. Dec 2005 A1
20060026784 Moskovich et al. Feb 2006 A1
20070202459 Boyd et al. Aug 2007 A1
20070203439 Boyd et al. Aug 2007 A1
20080008979 Thomas et al. Jan 2008 A1
20090070949 Sagel et al. Mar 2009 A1
20090281454 Baker et al. Nov 2009 A1
Foreign Referenced Citations (13)
Number Date Country
851479 Sep 1970 CA
655237 Apr 1987 CH
1466963 May 1969 DE
2409752 Sep 1975 DE
2545936 Apr 1977 DE
2910982 Feb 1980 DE
0023672 Jul 1980 EP
2556954 Jun 1985 FR
2654627 May 1991 FR
1182031 Feb 1970 GB
2018605 Oct 1979 GB
WO2004021958 Mar 2004 WO
WO2004039205 May 2004 WO
Related Publications (1)
Number Date Country
20070105065 A1 May 2007 US
Provisional Applications (1)
Number Date Country
60437300 Dec 2002 US
Continuations (1)
Number Date Country
Parent 10749675 Dec 2003 US
Child 11609224 US