This invention is directed to hose rewinding apparatus for flexible hoses. More specifically, the present invention relates to a direct current powered, motor driven hose rewinding apparatus with manual override that is mounted within a protective safety enclosure. The safety enclosure includes a telescoping handle and a pair of wheels for easy transport and storage.
The prior art has proposed a number of different structures for rewinding and storing a hose when it is not in use. These devices generally include stationary hose reel hangers that can be mounted to a surface of a building, such as an outer wall of a house, or portable hose reel carts that permit ready transport of the hose from one location to another.
In the past it was common to retrieve hoses and the like by manually winding them around a suitable structure, such as a wall mounted hanger, or simply bundling them into loose coils. Surface (or wall) mounted hose reels or hangers come in a wide variety of configurations. For example, one surface mounted hose hanger includes a simple, semi-circular metal or plastic support that is mounted to the building, over which the hose is looped or hung. Another surface mounted device or reel includes a rotatable fitting that is mounted to the building surface to which a manually rotated reel is mounted. Unfortunately, when hose is pulled out from such manually wound devices, it often becomes snarled or tangled and requires appreciable time and effort to correct the situation. Additionally, these surface mounted reels and hangers are often considered unsightly, particularly if they are mounted to the front of the building and are not covered or otherwise obscured by plants or foliage.
Portable hose reel carts permit ready transport of the hose from one location to another. Portable hose reel carts typically include an open, manually rotatable reel or spool positioned between a pair of side frames with wheels. The hose is manually wound upon the reel for storage and pulled or dispensed from the reel for use.
Although such carts have become wide spread in use because of their portable storage capabilities, they do have drawbacks. First, these devices require manual winding of the hose. Rewinding long hoses requires a considerable effort. Due to the low positional location of the winding mechanism on these devices, many users may be physically unable to complete the rewinding. Additionally, a hose stored on such a reel is exposed to the elements. Often hoses are made of rubber or like materials that can become stiff or brittle and can break when subjected to ultra-violet radiation or low temperature extremes, particularly with advanced age.
Portable hose reel carts may also be considered by some to be unsightly. Given that most hose reel carts are designed for use in and around garden and lawn areas, it is expected and natural for these carts to become dirty. As such, some users may be inclined to constantly remove a hose reel cart, particularly from the front of a house, when, for example, the cart becomes dirty, muddy or discolored.
In an effort to solve some of these problems, a number of hose retrieval devices have been developed which automatically retrieve and rewind hose on a reel in such a manner so as to avoid tangling the next time the hose is deployed or paid out. Such devices generally include a reel and a level wind mechanism for guiding the hose onto the reel. The level wind mechanism includes a traversing screw, a guide rod, and a follower. The reel is generally directly driven by a motor and/or an intermeshing clutch assembly. Unfortunately, the electric motors of the prior art devices have voltage requirements that reduce portability and increase the risk of electrical shock. Additionally, the clutch mechanisms utilized on these devices are either completely engaged or completely disengaged and lack an infinitely adjustable torque transfer assembly to allow operator controlled speed and/or force of hose retrieval.
Unfortunately, many of these motorized devices also lack a suitably safe enclosure to protect the operator and/or small children from being accidentally caught in the device. For example, none of the motorized hose reels known are equipped with safety interlocks to prevent the motor from being engaged if an enclosure cover is opened. To compound the problem, many of these devices do not provide for an emergency stop and require the entire hose to be retracted before the device can be stopped. Retracting the entire hose may take several seconds and exacerbates emergency situations such as when a person or pet has been caught in the machine or in the hose as it is retracted. In addition, none of the devices known provide a disengaging hose winding guide. The level winds of the prior art are capable of causing severe damage to an operator, child or pet that may accidentally get caught in the rewinding device.
Accordingly, there exists a need for a rechargeable battery operated motorized hose rewinding and storage device that permits safe motorized take-up and manual dispensing of a hose that is also aesthetically pleasing. Such a hose rewinding and storage device that can be safely used to retract and “hide-away” the hoses stored therein when not in use. The hose rewinding device should also be constructed for easy transport and storage while maintaining a overall compact profile.
A number of hose rewinding assemblies in the prior art utilize electric motors to drive a reel for retracting an elongate member such as a cord or hose. Examples are disclosed as follows:
U.S. Pat. No. 4,832,074 discloses an automatic hose rewinding device having an alternating current (AC) motor driven reel. The desired amount of hose is pulled out of the enclosure manually for use. After use a button is pushed once and the hose is completely retracted until a device on the end of the hose strikes a bar to disengage the AC motor. The design of the device does not allow small increments of the hose to be retracted. If the operator wishes to use a smaller amount of hose, the entire hose must be retracted and the desired amount of hose must be manually pulled out again. Additionally, the use of alternating current reduces portability of the device and increases the risk of electrical shock.
U.S. Pat. No. 4,513,772 discloses an automatic hose winding apparatus having an intermeshing, non-slipping clutch. The desired amount of hose is pulled out of the enclosure manually for use. For retraction, the operator must manually lock the intermeshing clutch mechanism in place. When the hose is completely retracted a device on the end of the hose strikes a lever to disengage the intermeshing clutch. The design of the device allows increments of the hose to be retracted, however, the operator must manually disengage the clutch before any amount of hose can be manually payed out. The apparatus makes no disclosure or suggestion of a protective enclosure or a disengaging hose guide.
U.S. Pat. No. 5,495,995 discloses a motor driven hose reel assembly. The device interconnects two sensors and a motor to monitor the quantity of hose manually pulled from the reel. By pulling on the hose manually, the hose is rewound in an amount less than that necessary to completely rewind the hose. Because the device is operated in a retraction direction when the hose is pulled, the design requires the operator to overcome the pulling force of the device to extend hose from the machine.
U.S. Pat. No. 4,012,002 discloses a coupling mechanism for use in conjunction with a hose reel to automatically and selectively engage or disengage the reel and motorized drive train. The coupling utilizes a sliding spring pin on the drive train which is designed to automatically engage one of a series of cooperating stop lugs on the reel to transmit the driving power of the motor to the rotatable reel. The spring pin can be manually locked in a disengaged position to allow the hose reel to freewheel. When the spring pin is engaged the device operates in direct drive from the motor.
U.S. Pat. No. 6,149,096 discloses a retractable reel device especially useful for electrical cables. The device is specifically designed to allow an operator to pull out a desired amount of cable. Once the cable is paid out, the device maintains a predetermined amount of tension on the cable. Thereafter, any slack in the cable is automatically retracted by an AC motor.
Thus, what is lacking in the art is a direct current powered hose rewinding device having an infinitely adjustable torque transfer method for modulating hose retrieval. The references are further deficient in teaching the use of a rechargeable battery in combination with a direct current (DC) motor for powering the hose retrieval device. Moreover, the references are deficient in teaching an enclosure with safety interlocks that prevent the motor from being engaged when a cover is in an open position. The devices are further deficient in teaching a safety hose guide assembly that is capable of disengagement in the event that the path of the device is inadvertently blocked. The prior art devices are still yet deficient in teaching a motorized hose rewinding device with manual override, allowing the hose to be retracted manually as well as by motor. Even further, the prior art devices are deficient in teaching a device which includes a telescoping handle and a pair of rearwardly mounted wheels for easy transport of the device.
The present invention provides an improved direct current powered hose rewinding device having an enclosure including a telescoping handle and a pair of rotatably mounted wheels to provide portability. Additional features include various embodiments of infinitely variable torque transfer assemblies which cooperate with the direct current motor for power-assisted hose retrieval.
The apparatus includes a motorized rotatable spool carried and contained within an enclosure. The rotatable spool includes a hub and a pair of flanges at opposing ends of the hub, and is configured for storage, motorized take-up, and manual pay-out of the flexible hose. Power for the motorized spool is supplied through a control assembly that includes a rechargeable battery, a main power switch, and at least one safety interlock. The safety interlock(s) are incorporated into the enclosure and prevent motorized operation of the spool when the enclosure is opened.
The enclosure has left and right side wall panels, front and rear wall panels extending between the left and right wall panels, and a cover. The enclosure is configured for receiving a rotatable spool for storing a length of flexible hose within the enclosure.
The cover pivots about a pair of hinges that mount the cover to the enclosure for movement between a closed position and an open position. The hinge arrangement includes hinge pin bosses extending upwardly from a top edge of the rear panel, wherein a hinge pin extends from each of the hinge pin bosses about laterally and in axial alignment with respect to each other. The cover is formed having a depending lip and a pair of pockets that are integrally formed into the rear wall of the depending lip for cooperation with each respective hinge boss and pin. Preferably, the pins are formed as fluted cylindrical elements extending from the bosses, axially aligned to one another to facilitate rotational movement.
When the cover is rotated into the open position, a safety interlock switch assembly prevents motorized operation of the hose spool. When the cover is rotated into the closed position, an engagement pin extending from the underside of the cover cooperates with the safety interlock switch to allow motorized operation of the spool.
To facilitate take-up and pay-out of the hose with the cover closed, the front wall panel includes a cut-out portion extending downward from the top edge thereof adjacent to the junction with the cover. In this arrangement, when the cover is closed, the cut-out accommodates traversing a portion of the flexible hose therethrough.
In one embodiment a reciprocating hose guide assembly is linked to the spool. When the spool is rotated, the reciprocating hose guide will move back and forth across the spool to uniformly and smoothly wrap the hose on the spool to provide a compact storage configuration.
In a further embodiment, the reciprocating hose guide can be released from its double-helix lead-screw in the event that its path becomes blocked, such as by debris or when a hand or arm is mistakenly placed in the opening. Alternatively, the hose guide may be manually disengaged to facilitate easy hose pay-out, and can thereafter be repositioned before being manually re-engaged.
A sliding seal fluid inlet joint permits the hose outlet joint to rotate with the hose spool without disconnecting the hose. This arrangement permits rotating the spool without twisting or torquing internal components, while maintaining sealed fluid communication between the water supply and the hose.
For rotational operation the spool is provided with a winding means capable of manual rotational movement of the spool in relation to the enclosure and an electrically energized power assist means for selective and operative engagement of the winding means. The winding means is illustrated as a hand crank extending through the enclosure and connected to the spool at about its axis of rotation. The power assist means is illustrated as a DC powered motor mounted within the enclosure and connected to the hose spool via a torque transfer assembly. In some embodiments the torque transfer assembly utilizes a dynamic clutch assembly to transfer torque from the motor to rotate the torque transfer assembly thereby rotating the spool. In other embodiments the clutch assembly may regulate torque supplied to the spool via a foot pedal operated clutch assembly. In one embodiment the foot operated cantilever forces an idler friction wheel into engagement with a drive friction wheel and a spool friction wheel to selectively couple and decouple the DC motor to and from the spool to modulate the pulling force and rotational speed of the hose spool. When the foot pedal is depressed the main power switch of the control assembly supplies current from the battery to start the DC motor and the idler friction wheel is forced into engagement to provide the desired speed and/or force required for hose retrieval. Release of the pedal stops the motor and allows hose to be freely pulled from the spool as desired.
In an alternative embodiment the foot operated cantilever forces an idler gear into engagement with a drive gear and a spool gear to selectively couple and decouple the DC motor to and from the spool to modulate the pulling force and rotational speed of the hose spool. When the foot pedal is depressed the main power switch of the control assembly supplies current from the battery to start the DC motor and the idler gear is forced into engagement to provide the desired speed and/or force required for hose retrieval. Release of the pedal stops the motor and allows hose to be freely pulled from the spool as desired. The device may also include at least one idler gear to adjust torque and rotational speed of the hose spool with respect to the motor.
Because motors often operate at relatively high RPM, the DC motor may include an internal gear train coupled between the armature of the DC motor and the DC motor output shaft. The internal gear train is capable of reducing RPM output and increasing motor torque.
Power for the control assembly is provided by a removable, replaceable, and rechargeable battery assembly conveniently stored within its own closed compartment in the enclosure. Connection to the battery is made via a unique clip-on connector that also provides an integrated battery charging jack. The clip-on connector is constructed and arranged to prevent the clip from being incorrectly connected to the battery and the assembly requires directional installation into the enclosure for electrical connection to the control assembly. The integrated charging jack in the clip-on connector allows convenient battery recharging without disconnecting the clip from the battery. In this manner the battery can be safely and easily removed, recharged, and/or reinstalled into the enclosure without danger of incorrect connection.
Therefore, it is an objective of the present invention to provide a motorized hose rewinding apparatus wherein the speed and/or force of hose retrieval is modulated by virtue of an infinitely adjustable torque transfer assembly.
It is a further objective of the present invention to provide a motorized hose rewinding apparatus that is constructed to utilize a DC power source.
It is still a further objective of the present invention to provide a motorized hose rewinding apparatus having a removable and rechargeable power source.
Yet another objective of the present invention is to provide a battery operated rechargeable motorized hose rewinding apparatus capable of protecting the hose during storage from direct contact with the elements.
Still another objective of the present invention is to provide a motorized hose rewinding apparatus that is aesthetically appealing to consumers.
Still yet another objective of the present invention is to provide a motorized hose rewinding apparatus that includes an enclosure having safety interlocks to prevent motorized operation when the enclosure is opened.
Still yet another objective of the present invention is to provide a hose rewinding device that provides portability by utilizing wheels and telescoping handle assembly to permit easy transport of the device.
Still yet another objective of the present invention is to provide a hose winding guide assembly that includes automatic as well as manual disengagement features.
Other objectives and advantages of this invention will become apparent from the following description taken in conjunction with the accompanying drawings wherein are set forth, by way of illustration and example, certain embodiments of this invention. The drawings constitute a part of this specification and include exemplary embodiments of the present invention and illustrate various objects and features thereof.
It is to be understood that while a certain form of the invention is illustrated, it is not to be limited to the specific form or arrangement of parts herein described and shown. It will be apparent to those skilled in the art that various changes may be made without departing from the scope of the invention and the invention is not to be considered limited to what is shown in the drawings and described in the specification.
Referring now to
The enclosure 14 includes a front wall panel 30 and a rear wall panel 34, a left side wall panel 32, a right side wall panel 36, and a pivoting cover 38. Optionally, the enclosure 14 can include a bottom panel (not shown) for substantially fully enclosing the spool 12 and protecting the spool 12 and hose from the elements. The optional bottom panel is preferably constructed as a reversible member with an enhanced friction engaging first surface and a relatively smooth second surface. In this manner the bottom panel could be inserted to prevent the apparatus from skidding on hard surfaces where staking is not practical. In addition, the bottom surfaces of the left side wall panel 32 and right side wall panel 36 may be constructed with optional rubber pads 33 to further engage hard surfaces. As will be apparent from the drawings, the front, rear and side panels 30-36, and the cover 38 enclose the spool 12 such that the spool is substantially not visible from outside of the enclosure 14 when the cover 38 is closed.
In a first embodiment the front panel 30 of enclosure 14 includes a cut-out portion 52 extending downwardly from the top lip thereof. The cut-out portion 52 can be elongated and is suitably sized to accommodate a standard size garden hose so that the hose can be paid-out from or taken-up onto the spool 12 without lifting the cover 38. That is, the hose can freely move through the cut-out opening 52 without opening the cover 38.
In a most preferred embodiment the front panel 30 of enclosure 14 includes an elongated cut-out portion 52 extending downwardly from a top lip thereof. The cut-out portion 52 is sized to accommodate a reciprocating hose guide assembly 50 (
The enclosure 14 preferably includes a pair of wheel recesses 40 extending inwardly into the right side panel 36 and left side panel 32 for housing the rotatably mounted wheel assemblies 43. The wheel recesses 40 are generally positioned at a lower rear portion of the side panels and each includes a centrally located wheel assembly hub 212 and aperture 41 (
In a most preferred embodiment, the right side panel wheel recess 40 includes a foot pedal aperture 45. The foot pedal aperture is adapted to allow the second end 42 of the cantilever 110 (
A manual override winding crank 24 is external of the enclosure 14 and extends through a side wall for connection to the spool 12, preferably on an end opposite to that of the in-tube 20 (
Now referring to
Incorporated into the enclosure 14 is a lockout assembly 62 that prevents the direct current motor 98 (
Also visible is the reciprocating hose guide assembly 50 and the basket member 44. The reciprocating hose guide assembly 50 contains a double helix lead-screw 54, guide rod 56, and carriage 58. The reciprocating hose guide assembly 50 is linked via gear-train 96 (
Referring to
Those skilled in the art will recognize that the hose spool 12 includes a water inlet port or in-tube 20 and an outlet port or out-tube 22. The in-tube 20 is mounted to the enclosure 14 at about the axis of rotation of the spool 12. The in-tube 20 is connected to the out-tube 22 by a sliding seal arrangement 23 which will be recognized by those skilled in the art. This arrangement permits the in-tube 20 to remain fixed to the enclosure 14, while the out-tube 22 rotates with the spool 12. In this configuration, the in-tube 20 and out-tube 22 remain in fluid communication with one another. This arrangement permits rotating the spool 12 without twisting or torquing internal components, while maintaining sealed fluid communication between the water supply and the hose.
Also visible is one embodiment of the torque transfer assembly 68 having the structural transfer cover 46 removed. The transfer cover 46 cooperates with the right side panel 36 to provide structural support to the torque transfer assembly.
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Referring to
Advantageously, this configuration permits ready assembly of the enclosure 14 with a minimum number of tools, and involves a minimum number of parts.
The rear panel 34 includes a telescoping handle assembly 130. The telescoping handle assembly 130 is moveable between a storage position, as illustrated in
The cover or top panel 38 is fitted to the panels 30-36 using a hinge arrangement indicated generally at 80. The hinge arrangement 80 permits pivoting or rotating the cover 38 between the closed position and an open position. The cover 38 is configured so that when opened and maintained in the open position, use of the motorized spool is locked out via lockout assembly 62 (
The hinge arrangement 80 includes a pair of integrally formed hinge pin bosses 142 extending upwardly from the top edge 144 of the rear panel 34, each boss including a laterally extending and axially aligned hinge pin 146. In a present embodiment, the cover 38 has a depending lip 88 extending around the perimeter of the cover. The depending lip includes a front 148, a rear 150, a left 152 and a right surface 154, the rear surface having a pair of pockets 156 (
The rear panel 34 also includes a pair of wheel assembly receivers 158 each constructed and arranged to cooperate with the axle portion of a wheel assembly 43 (
The rear panel 34 further includes a pair of integrally formed hooks 164 constructed and arranged to cooperate with a basket member 44 (
Referring to
In the drive gear assembly 170 a drive gear 107 is rotatably secured within the enclosure and suitably coupled to the direct current motor output shaft 166. At least one idler gear 115 is constructed and arranged for selective engagement with the respective drive gear 107 and at least one driven idler gear 117 wherein the idler gears 115 and 117 are rotatable responsive to rotation of the drive gear 107. A spool gear 118 is secured to the hub 16 of spool 12 to be rotatable therewith. The spool gear 118 larger in diameter than the drive gear 107. The spool gear rotatable responsive to the idler gears 115 and 117, thereby enabling the direct current motor 98 to rotate the spool 12 at a rotational speed less than the rotational speed of the drive gear 107.
The preferred embodiment includes a second assembly pivotably mounted within the enclosure illustrated as a cantilever 110 having a first end 164, preferably including the idler wheel 114 or idler gear 115, and a second end 42 including a pivotally mounted foot pedal 47. The construction and arrangement of the second assembly allows the pulling force and rotational speed of the motorized spool 12 to be regulated. For example, when the foot pedal 47 is depressed the current from the battery 132 (
When the pedal 47 is depressed the motor rotates the spool through the action of the torque transfer assembly 68. That is, the motor 98 rotates the drive gear 107/friction wheel 106, the idler gear 115/friction wheel 114 respectively operatively engages and rotates driven idler gears 117/friction wheels 116, that rotates the spool gear/friction wheel 118 to complete the power-assisted rotation of the spool 12. The hose winding guide lead-screw 54 is caused to rotate through the action of gears 118, 120, and 122. That is, when spool 12 is rotated by motor 98 or by handle 25, the spool 12 and spool gear 118 rotates, which causes the idler gear 120 to rotate, which causes lead screw 54 to also rotate.
Referring to
The clutch assembly 170 generally includes a first mating surface and a second mating surface, wherein the first mating surface and the second mating surface are constructed and arranged to engage with each other upon rotation of said direct current motor output shaft to cause rotation of the torque transfer assembly 172 and the spool 12. In a preferred embodiment the first and second surfaces of the clutch assembly 170 utilize friction to selectively rotate the torque transfer assembly 172 and thereby the spool 12. In a most preferred embodiment a cantilever arrangement 110 having a foot pedal 47 may be utilized to operatively control the frictional engagement between the first and second surfaces. In this manner springs, pressurized fluids, mechanical advantage or suitable combinations thereof may be utilized to engage the clutch assembly for selective rotation of the spool 12.
Referring to
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The battery compartment 60 is provided with a hinged battery cover door 48 having a latch arrangement for releasably engaging side panel 36. Formed integrally to the inside of the battery cover door is a vertical battery hold down 136. When the door 48 is latched in the closed position the battery compartment electrical contacts and the battery assembly electrical contacts 144, 146 (
Referring to
Referring to
All patents and publications mentioned in this specification are indicative of the levels of those skilled in the art to which the invention pertains. All patents and publications are herein incorporated by reference to the same extent as if each individual publication was specifically and individually indicated to be incorporated by reference.
It is to be understood that while a certain form of the invention is illustrated, it is not to be limited to the specific form or arrangement herein described and shown. It will be apparent to those skilled in the art that various changes may be made without departing from the scope of the invention and the invention is not to be considered limited to what is shown and described in the specification.
One skilled in the art will readily appreciate that the present invention is well adapted to carry out the objectives and obtain the ends and advantages mentioned, as well as those inherent therein. The embodiments, methods, procedures and techniques described herein are presently representative of the preferred embodiments, are intended to be exemplary and are not intended as limitations on the scope. Changes therein and other uses will occur to those skilled in the art which are encompassed within the spirit of the invention and are defined by the scope of the appended claims. Although the invention has been described in connection with specific preferred embodiments, it should be understood that the invention as claimed should not be unduly limited to such specific embodiments. Indeed, various modifications of the described modes for carrying out the invention which are obvious to those skilled in the art are intended to be within the scope of the following claims.
This application is a continuation-in-part of applicant's co-pending U.S. application Ser. No. 10/649,015 filed Sep. 25, 2003 which is a continuation-in-part of co-pending U.S. application Ser. No. 10/346,908 filed Jan. 17, 2003 the contents of which are each hereby incorporated by reference in their entirety.
Number | Date | Country | |
---|---|---|---|
Parent | 10649015 | Aug 2003 | US |
Child | 10917921 | Aug 2004 | US |
Parent | 10346908 | Jan 2003 | US |
Child | 10649015 | Aug 2003 | US |