Patent Application
20090090661
This patent relates to apparatus and methods for water filtration systems. More particularly, this patent relates to apparatus and methods for faucet-mounted water filtration systems and platforms.
Water treatment devices for home and other uses are devices typically incorporated in a water system either in-line or at a terminal end. An example of the former would be an under-the-counter device which filters water prior to reaching a faucet outlet. Exemplary terminal end water treatment devices are countertop and faucet-mounted. Water treatment devices can treat water by the use of mechanical filtration, UV light treatment, or chemical treatment.
In recent years, consumption of water by people has risen due to better health education and other information available to the public. However, public perception of the poor quality and taste of regular tap water has led to the development and sale of a number of products addressing these problems. Various bottled waters have also been made available to consumers to meet this increased demand. Accordingly, a more convenient and cost effective approach for providing enhanced water to the public is needed.
The present invention is directed to water filtration platforms and systems.
One exemplary embodiment of the present invention includes a faucet-mounted filter platform comprising a body forming a fluid chamber having a water inlet, a quick connect device for mounting the filter system to a water faucet such that the water inlet is placed in fluid communication with the water faucet, a filtered water flow path disposed within the body and in fluid communication with the water inlet, an unfiltered water flow path disposed within the body and in fluid communication with the water inlet, a diverter valve disposed within the fluid chamber and operable to open and close the filtered and unfiltered water flow paths, an actuator engaging the diverter valve to open and close the filtered and unfiltered water flow paths, and a flow meter comprising a flow meter housing connected to the body, the flow meter is positioned outside of the body and in fluid communication with the filtered water flow path. Also, the quick connect device positioned adjacent the water inlet along the body.
Another exemplary embodiment of the present invention includes a faucet-mounted filter platform comprising an upper body, a quick connect device disposed substantially within the upper body and having a water inlet operable to fluidly connect to a water faucet, a lower body connected to the upper body to form a diverter valve chamber, a seal positioned along a circumference of and at the connection between the upper body and lower body, a diverter valve disposed in the diverter valve chamber operable to open and close a filtered water flow path and an unfiltered water flow path, the filtered and unfiltered water flow paths disposed in fluid communication with the diverter valve chamber, and an actuator engaging the diverter valve to open and close the filtered and unfiltered water flow paths without interrupting the seal.
Another exemplary embodiment of the present invention include a faucet-mounted filter system comprising a body forming a fluid chamber having a water inlet, a quick connect device for mounting the filter system to a water faucet such that the water inlet is placed in fluid communication with the water faucet, the quick connect device positioned adjacent the water inlet along the body, a filtered water flow path disposed within the body and in fluid communication with the water inlet, an unfiltered water flow path disposed within the body and in fluid communication with the water inlet, a diverter valve disposed within the fluid chamber and operable to open and close the filtered and unfiltered water flow paths, a seal for sealing the fluid chamber, an actuator engaging the diverter valve to open and close the filtered and unfiltered water flow paths without interrupting the seal, a flow meter comprising a flow meter housing connected to the body, the flow meter is positioned outside of the body and in fluid communication with the filtered water flow path, a filter housing connected to the flow meter housing and comprising a reservoir, and a filter cartridge disposed within the reservoir, wherein the filter cartridge is in fluid communication with the flow meter.
Yet another exemplary embodiment of the present invention includes a diverter valve for a filter system comprising a seal, a first diverter valve operable to open and close a filtered water flow path and a second diverter valve operable to open and close an unfiltered water flow path. The first diverter valve comprises a first outer shell formed integral with the seal and extending from the seal and a first inner core disposed within the first outer shell. The second diverter valve comprises a second outer shell formed integral with the seal and extending from the seal and a second inner core disposed within the second outer shell.
Still yet another exemplary embodiment of the present invention includes a faucet-mounted filter system comprising a body having a first end and a second end, an opening within the first end of the body and operable to receive a male portion of an adaptor, a water inlet coaxially disposed within the opening and operable to fluidly connect to the adaptor when the adaptor is received within the opening, a channel disposed within the first end of the body and circumscribing the opening, a first locking device positioned within the channel and partially around the circumference of the opening, a second locking device positioned substantially opposite the first locking device within the channel and partially around the circumference of the opening, a spring biasing the first and second locking devices into the first positions, an actuator operable to cause the first and second locking devices to move against the force of the spring, an unfiltered water outlet in fluid communication with the water inlet, a filter housing connected to the body, a filter medium disposed within the filter housing and in fluid communication with the water inlet, and a filtered water outlet in fluid communication with the filter medium. The first and second locking devices are movable between respective first positions and respective second positions. The first and second locking devices protrude into the opening when disposed in the first positions.
While the specification concludes with claims particularly pointing out and distinctly claiming the invention, it is believed the same will be better understood from the following description taken in conjunction with the accompanying drawings in which:
a is a cross sectional view of the lower body taken along A-A′ of
b is a cross sectional view of the lower body taken along B-B′ of
The embodiments set forth in the drawings are illustrative in nature and not intended to be limiting of the invention defined by the claims. Moreover, individual features of the drawings and the invention will be more fully apparent and understood in view of the detailed description.
The following text sets forth a broad description of numerous different embodiments of the present invention. The description is to be construed as exemplary only and does not describe every possible embodiment since describing every possible embodiment would be impractical, if not impossible, and it will be understood that any feature, characteristic, component, composition, ingredient, product, step or methodology described herein can be deleted, combined with or substituted for, in whole or part, any other feature, characteristic, component, composition, ingredient, product, step or methodology described herein. Numerous alternative embodiments could be implemented, using either current technology or technology developed after the filing date of this patent, which would still fall within the scope of the claims. All publications and patents cited herein are incorporated herein by reference.
It should also be understood that, unless a term is expressly defined in this patent using the sentence “As used herein, the term ‘______’ is hereby defined to mean . . . ” or a similar sentence, there is no intent to limit the meaning of that term, either expressly or by implication, beyond its plain or ordinary meaning, and such term should not be interpreted to be limited in scope based on any statement made in any section of this patent (other than the language of the claims). No term is intended to be essential to the present invention unless so stated. To the extent that any term recited in the claims at the end of this patent is referred to in this patent in a manner consistent with a single meaning, that is done for sake of clarity only so as to not confuse the reader, and it is not intended that such a claim term be limited, by implication or otherwise, to that single meaning. Finally, unless a claim element is defined by reciting the word “means” and a function without the recital of any structure, it is not intended that the scope of any claim element be interpreted based on the application of 35 U.S.C. § 112, sixth paragraph.
Referring to
Upper and lower housings 12 and 14 provide an aesthetic outer shell that is quickly and easily connected to and removed from the filter system, using connection devices and methods as known to one of ordinary skill in the art, including but not limited to bolt and screw connections, snap fit, welds, latches, etc. As such, upper and lower housings 12 and 14 permit the outer appearance (e.g., color, shape, orientation (vertical filter housing or horizontal filter housing), etc.) of filter system 1 to be simply and efficiently changed without having to change the internal functional components such as quick connect device 30, diverter valve 70, and flow meter 100. In addition, the upper and lower housings provide some limited protection to quick connect device 30, diverter valve 70, and flow meter 100 from the elements such as dirt, debris, etc. Upper and lower housings 12 and 14 are not part of the fluid path through filter system 1 and thus provide only an aesthetic appearance and some protection from the elements as described above herein. Lower housing 14 may also comprise an outlet aperture 15.
Filter system 1 may be modular in design such that one or more of its components, e.g., filter platform 10, a filter housing 130, the filter cartridge, upper housing 12 and lower housing 14, are removably connected to each other, permitting multiple configurations/design changes and or component replacement without having to do a complete re-design of all of its configuration and/or components with every design change. For example, filter platform 10, as described below herein, is modular such that it enables filter system 1 to have filter housing 130 in either a vertical orientation (
Filter system 1 may also comprise a faucet adaptor 20 as shown in
Referring to
Upper body 41 and/or quick connect device 30 may be operable to connect and mount body 40, filter platform 10, and/or filter system 1 to an end of a water faucet. Upper body 41 may comprise a water inlet 45, a valve chamber upper half 46 in fluid communication with the inlet 45, an annular space 47 disposed within upper body 41 circumscribing inlet 45, a quick connect device 30 positioned within annular space 47, and a seal channel 48 disposed within an end of upper body 41 opposite inlet 45 such that seal channel 48 circumscribes valve chamber upper half 46. Seal channel 48 may be annular. Water inlet 45 may optionally comprise a screen 760 as shown in
In one exemplary embodiment of the filter system that optionally includes angled faces 29 and 59, when faucet adaptor 20 is inserted into upper body 41 (and quick connect device 30) as will be described below herein, angled faces 59 of inlet 45 may engage angled faces 29 of faucet adaptor 20. This engagement of angled faces 59 with angled faces 29 may prevent filter system 1 from rotating about a longitudinal axis L-L on faucet adaptor 20 as shown in
Filter platform 10 may also comprise an upper body cover 43 having an aperture 44 therethrough. Upper body cover 43 may be connected to upper body 41 over annular space 47 such that inlet 45 at least partially protrudes into and/or through aperture 44. When upper body cover 43 is placed in its position on upper body 41, aperture 44 is coaxially-aligned with inlet 45. Aperture 44 may comprise a diameter that is at least slightly larger than an outside diameter of inlet 45, thus creating annular opening 49 between upper body cover 43 and the outside diameter of inlet 45. Annular opening 49 is operable to receive second end 26 of faucet adaptor 20 or an end of a water faucet.
As used herein, ‘quick connect device’ is defined as a device that permits the easy and quick connection and disconnection of a water filter system to and from an end of a water faucet without having to thread and unthread the water filter system to and from the faucet end each time the water filter system is connected and disconnected from the water faucet. Quick connect device 30 may also comprise a first locking device 31, a second locking device 32 opposite first locking device 31, a first spring 33a biasing first locking device 31 into a first position (A), a second spring 33b biasing second locking device 32 into the first position (A), a first actuator 39a, and a second actuator 39b. First and second locking devices 31 and 32 at least partially circumscribe inlet 45 within annular space 47. When biased in first position A, first and second locking devices 31 and 32 are biased inwardly toward inlet 45 such that they partially protrude into annular opening 49. In the exemplary embodiment shown, first and second locking devices 31 and 32 are biased into first position A by respective first and second springs 33a and 33b.
In another exemplary embodiment of the adaptor 20, the adaptor 20 may comprise a plurality of teeth, ridges, raised surfaces, indentations, slits, grooves, or notches (not shown) disposed along an outer surface of the second end 26 adjacent the notch 27. In addition, the first and second locking devices 31 and 32 may comprise a plurality of corresponding teeth, ridges, raised surfaces, indentations, slits, grooves, or notches (not shown) disposed along an inner surface of the first and second locking devices 31 and 32 such that when the first and second locking devices 31 and 32 engage the outer surface of the second end 26, the plurality of teeth, ridges, raised surfaces, indentations, slits, grooves, or notches of the first and second locking devices 31 and 32 lock into engagement with the corresponding plurality of teeth, ridges, raised surfaces, indentations, slits, grooves, or notches of the adaptor 20. The engagement of the plurality of teeth, ridges, raised surfaces, indentations, slits, grooves, or notches prevents the filter system from easily rotating, not rotating at all, around the longitudinal axis L-L on faucet adaptor 20. These surfaces and springs may be configured to only permit rotation of the filter system after a certain specified force is applied to the filter system.
In another alternative exemplary embodiment, the outer surface of the second end 26 and the inner surface of the first and second locking devices 31 and 32 along with the spring force of the first and second springs 33a and 33b may be configured to provide sufficient frictional force to prevent the filter system from easily rotating, or not rotating at all, around the longitudinal axis L-L on faucet adaptor 20. (See
Referring to
In operation, when a user pushes inwardly on first and second actuators 39a and 39b, the actuators engage first and second locking devices 31 and 32 moving the first and second locking devices outwardly into a second position within annular space 47. In the second position, first and second locking devices 31 and 32 are positioned such that they do not protrude into annular opening 49, thus permitting first end 24 of faucet adaptor 20 to be inserted into annular opening 49. As first end 24 is inserted further into annular opening 49, first and second locking devices 31 and 32 move adjacent notch 27 of faucet adaptor 20. When the user releases the inward force applied to first and second actuators 39a and 39b, first and second springs 33a and 33b move respective first and second locking devices 31 and 32 inwardly into a first position in notch 27 (the biased position), as shown in
When body 40 and connected filter system 1 are connected to faucet adaptor 20, the filter system produces an audible signal, indicating to a user that the filter system is properly and firmly connected to the water faucet. The audible signal is produced by the first and second locking devices 31 and 32 impacting a surface of notch 27. First and second locking devices 31 and 32 are forced by springs 33a and 33b into contact with the surface of notch 27. As described above herein, faucet adaptor 20 may be connected to an end of a water faucet and thus body 40 may be connected and mounted to the faucet via faucet adaptor 20. It should be understood that quick connect device 30 could be designed to include one spring to bias both first and second locking devices 31 and 32 into the first position as shown in
First and second locking devices 31 and 32 may also comprise third cam surfaces 34a and 34b, respectively. Third cam surfaces 34a and 34b are operable to engage second end 26 of faucet adaptor 20 as the adaptor is inserted into annular opening 49 and, optionally cause respective first and second locking devices 31 and 32 to move outwardly within annular space 47 into the second position against first and second springs 33a and 33b. In this position, first and second locking devices 31 and 32 permit first end 24 to enter into annular opening 49. As first end 24 is inserted further into annular opening 49, first and second locking devices 31 and 32 move adjacent to notch 27 of faucet adaptor 20 and then caused to move inwardly into notch 27 due to the force of first and second springs 33a and 33b (the first position). When first and second locking devices 31 and 32 are positioned within notch 27, body 40 (and the filter platform 10 and/or filter system 1) is locked, connected, and/or mounted to faucet adaptor 20 as shown in
Referring back to
A seal channel 52 is also disposed in first end 51 of lower body 42. Seal channel 52 aligns and corresponds with seal channel 48 of upper body 41 such that when upper body 41 and lower body 42 are connected together as shown in
Upper and lower bodies 41 and 42 may be connected to each other using a variety of conventional components and methods, including but not limited to bolt and nut connections, snap-fit, heat seal, welds (e.g., sonic welds, solvent welds), riveting, and clips (e.g., metal or plastic). In addition, as set forth above, the upper and lower bodies may be fabricated as one single and integral unit as known to one of ordinary skill in the art. When combined to form body 40, upper and lower bodies 41 and 42 form a pressure vessel with a fluid flow path from unfiltered water inlet 45 into valve chamber 50 and then splitting into a filtered water flow path (first valve chamber outlet 60 and filtered water channel 63) and an unfiltered water flow path (second valve chamber outlet 62, unfiltered water channel 64, and unfiltered water outlet 58).
As shown in
In the exemplary embodiment, first and second outer shells 74 and 76 may be fabricated as an integral piece of valve chamber seal 73 as shown in
Filter platform 10 may also comprise a valve actuator 90 which may include a shaft 92, a detent 88 within shaft 92, a first actuator cam surface 94, a second actuator cam surface 96, and a handle 98 connected to an end of shaft 92. As shown, handle 98 may be rotated to turn/rotate shaft 92. Valve actuator 90 may also include a shaft spring 85 and a spring end cover 87. Shaft spring 85 may be positioned between lower body 42 and shaft 92, and spring end cover 87 may be positioned between an end of shaft spring 85 and detent 88 of shaft 92. First and second actuator cam surfaces 94 and 96 are disposed on opposite sides of detent 88 along shaft 92. Shaft spring 85 and spring end cover 87 are also positioned such that spring end cover 87 is disposed within detent 88 when shaft 92 is in a first position. Shaft 92, first actuator cam surface 94, and second actuator cam surface 96 are all positioned adjacent to and outside of valve chamber 50. Also, first and second actuator cam surfaces 94 and 96 are operable to engage and move first and second diverter valves 71 and 72, respectively, by engaging ends of respective first and second inner cores 75 and 77.
For example, first inner core 75 is positioned such that one end is adjacent to and engageable with first actuator cam surface 94. Second inner core 77 is positioned such that one end is adjacent to and engageable with second actuator cam surface 96. Also, first inner core 75 extends through first entrance 78a and into an internal space of first outer shell 74 such that first inner core 75 extends from outside valve chamber 50 (i.e., outside valve chamber seal 73) to inside valve chamber 50 without interrupting valve chamber seal 73. Similarly, second inner core 77 extends through second entrance 78b and into an internal space of second outer shell 76 such that second inner core 77 extends from outside valve chamber 50 (i.e., outside valve chamber seal 73) to inside valve chamber 50 without interrupting valve chamber seal 73.
Referring specifically to
Second diverter valve 72 also comprises a second fulcrum point 83 (
First and second actuator cam surfaces 94 and 96 are oriented on shaft 92 in a ninety degree off-set. When a user rotates shaft 92 ninety degrees in one direction (e.g., clockwise direction), first actuator cam surface 94 engages first inner core 75 causing the first diverter valve 71 to pivot on first fulcrum point 81 against the bias of first valve spring 82. As first actuator cam surface 94 causes first diverter valve 71 to pivot on first fulcrum point 81, the first diverter valve 71 moves away from first valve chamber outlet 60, unseating first resilient, outer shell 74 from the first valve chamber outlet.
First actuator cam surface 94 is designed to reach a stable position, when shaft 92 has been rotated about 90 degrees (e.g., clockwise direction) to provide a user a tactile signal that the valves have been fully opened and/or closed as described above herein. In this position, first diverter valve 71 is in an open position, permitting unfiltered water to flow through first valve chamber outlet 60 into filtered water channel 63. Also, in this position, due to second cam surface 96 not in a position to engage second inner core 77, second diverter valve 72 remains in its normally-closed position over second valve chamber outlet 62. Additionally, when shaft 92 is rotated, spring end cover 87 positioned on an end of moves out of detent 88 creating a audible signal such as a “clicking” sound to indicate to the user that the valves have been fully opened and/or closed as described above herein.
When a user rotates shaft 92 back ninety degrees in the opposite direction (e.g., counter-clockwise direction), shaft 92 causes the reciprocal operations as described above herein to take place. This opposite rotation of shaft 92 will result in first diverter valve 71 to be moved into an open position over first valve chamber outlet 60, and second diverter valve 72 be released back into its normally-closed position over second valve chamber outlet 62. For example, when shaft 92 is rotated ninety degrees in the opposite direction (e.g., counter-clockwise direction), first actuator cam surface 94 disengages first inner core 75 permitting the first valve spring 82 to move the first diverter valve 71 (pivot on first fulcrum point 81) toward first valve chamber outlet 60 back into the normally-closed position, and second cam surface 96 engages second inner core 77 causing the second diverter valve 72 to pivot on second fulcrum point 83 against the bias of second valve spring 84. As second cam surface 96 causes second diverter valve 72 to pivot on second fulcrum point 83, second diverter valve 72 moves away from second valve chamber outlet 62, unseating second resilient, outer shell 76 from the second valve chamber outlet.
Second cam surface 96 is designed to reach a stable position, when shaft 92 has been rotated about 90 degrees in the opposite direction (e.g., counter-clockwise direction) to provide a user a tactile signal that the valves have been fully opened and/or closed as described above herein. In this position, second diverter valve 72 is in an open position, permitting unfiltered water to flow through second valve chamber outlet 62 into unfiltered water channel 64. It is understood that any variety of off-sets may be used. Thus, in this exemplary design, first diverter valve 71 and second diverter valve 72 alternately open and close first and second valve chamber outlets 60 and 62, respectively with the simple rotation of shaft 92. Additionally, when shaft 92 is rotated in this opposite direction, spring end cover 87 moves back into detent 88 creating a audible signal such as a “clicking” sound to indicate to the user that the valves have been fully opened and/or closed as described above herein.
This design of the diverter valves and valve chamber seal is advantageous because it allows the two valves to engage first and second valve chamber outlets 60 and 62 without having to interrupt the valve chamber seal 73. In other words, no moving parts, i.e., the actuator, cams, and/or first and second diverter valves have to penetrate or interrupt valve chamber seal 73 of the valve chamber. As such, the filter platform 10 and/or diverter valve 70 requires no sliding seals in the valve system, i.e., wherein a seal must be made along a moving part such as the valve actuator, other moving parts, or the valve itself.
As shown in
Referring to
Flow meter inlet 103 and flow meter outlet 105 may have a linear configuration as shown in
Nozzle 101 may have a cross section width (w) from about 0.1 mm to about 4.0 mm, from about 0.5 mm to about 2.0 mm, and more particularly from about 0.8 mm to about 1.3 mm. Also, flow meter outlet 105 may have a diameter (d) from about 2.0 mm to about 8.0 mm, from about 3.0 mm to about 6.0 mm, and more particularly from about 3.5 mm to about 4.5 mm. Nozzle 101 and flow meter outlet 105 may be designed to include a ratio (w:d) between cross sectional width (w) of nozzle 101 and diameter (d) of flow meter outlet 105 from about 1:20 to about 1:2 and from about 1:6 to about 1:3. This ratio is designed to ensure that the ratio of our theoretical volumetric flow rate and actual flow rate is predictable and repeatable, where “theoretical volumetric flow rate” is defined to mean “turbine spin rate multiplied by swept volume of turbine”.
Turbine 106 may comprise a plurality of turbine blades 108 spaced around the circumference of a hub 113. Turbine 106 may rotate about a rotational axis 114. Hub 113 may also comprise an axle 110 centered thereon and coaxial with rotational axis 114. As shown, the exemplary embodiment comprises four equally spaced blades 108 extending radially from hub 113 and about rotational axis 114. In the exemplary embodiment shown, one of the blades 108 comprises a reservoir 109 disposed therein, wherein signal generator 107 may be positioned within. In addition, turbine 106 may be fabricated from a variety of materials, including but not limited to metals, plastics, composites, and any combination thereof. As shown in
Signal generator 107 may comprise a variety of conventional signal generators as known to one of ordinary skill in the art, including but not limited to magnets, RFID tags, colored stripes (for optical detection), and metal blocks. In one exemplary embodiment, signal generator 107 comprises a magnet that fits within reservoir 109 of one of the blades 108. Signal detector 116 may be positioned outside of meter housing 102 and electrically connected to a main circuit board 115 as shown in
As shown in this exemplary embodiment, reed switch 116 is positioned relative to turbine 106 such that longitudinal axis 117 is parallel with and/or aligned with rotational axis 114 of the turbine 106. In the exemplary embodiment shown in
The main circuit board 115 may be a printed circuit board assembly as known to one of ordinary skill in the art. The circuit board 115 and reed switch 116 may be positioned within a first chamber 55 disposed within a bottom side of support structure 54 as shown in
Unfiltered water flows into and through flow meter inlet 103, and nozzle 101 directs the water onto blades 108, causing turbine 106 to rotate on axle 110. The water travels within meter chamber 104 and then exits flow meter outlet 105. As signal generator 107 rotates around the meter chamber 104, signal detector 116 detects each time signal generator 107 passes by (i.e., one rotation of the turbine) and sends a signal to a microprocessor 118 mounted on the circuit board 115. In one exemplary embodiment, signal generator 107 is a magnet, and signal detector 116 is a reed switch. Every time magnet 107 passes by reed switch 116, the magnetic field of the magnet causes the reed switch to operate. When reed switch 116 operates, it sends a signal to the microprocessor.
Microprocessor 118 has been programmed with an algorithm converting the fluid volume equated to each revolution of turbine 106. As such, each operation of the signal detector (i.e., each full rotation of turbine 106), the microprocessor calculates, tracks, and stores the amount (i.e., volume) of water that has passed through flow meter 100 and thus, ultimately through an attached filter cartridge.
Filter system 1 may also comprise one or more indicators 2 such as an LED light electrically connected to the microprocessor. In one exemplary embodiment, indicator 2 may be electrically connected to an indicator circuit board 143 (e.g., a LED printed circuit board assembly), which, in turn, may be electrically connected to microprocessor 118. (See, e.g., FIG. 2). Indicator 2 may be connected to filter platform 10, upper housing 12, lower housing 14, filter housing 130, or support structure 54. In one exemplary embodiment, indicator circuit board 143 may be disposed within upper and lower housings 12 and 14, adjacent filter platform 10 as shown in
When the first amount of water begins to flow through the flow meter 100, the signal detector detects the rotation of turbine 106 (i.e., signal detector 107) and signals this flow to the microprocessor. In response to this signal, microprocessor 118 operates indicator 2 (e.g., light up a green LED) to provide a user a first signal. The first signal indicates to the user that filter system 1 is in operation. After water has flowed for three seconds, microprocessor 118 stops operating indicator 2 (e.g., turns off the green LED). This is done to conserve battery power. Each time the filtered water flow is stopped and re-started, indicator 2 operates for another three seconds.
After a certain volume of water has passed through (i.e., been filtered by) the filter cartridge, the filter cartridge no longer operates effectively, i.e., it is removing or absorbing less contaminants, particulates, odors, microorganisms, and other undesirable items, than what is desired or required. The specific volume of water beyond which the filter no longer operates effectively, is considered the filter cartridge's volumetric useful life. When this specific volume of water has passed through the filter, the filter cartridge has met and/or exceeded its useful life.
It is desirable to signal to the user when the filter cartridge has almost met or achieved its useful life. Thus, microprocessor 118 may be programmed to operate indicator 2 to provide a user a second signal (e.g., light up a yellow LED) when a filter cartridge has reached a specific threshold of its volumetric useful life such as about 60% of its volumetric useful life. In other words, microprocessor 118 may be programmed to cause the indicator to display the second signal when 60% of the volumetric useful life has passed through the filter. When the indicator operates the second signal at about 60% of the volumetric useful life, it signals to a user that the filter will need to be changed soon.
Alternately, a filter cartridge's useful life may be calculated based upon a period of time that transpires before the filter no longer operates effectively. This time period may be considered a filter cartridge's time-based useful life. In such an exemplary embodiment, microprocessor 118 may be programmed to operate indicator 2 to provide a user the second signal after a set amount of time has expired such as when about 67% of the filter cartridge's time-based useful life has transpired. In one example, filter system 1 may comprise a timer that tracks the total amount of time that has transpired since the filter cartridge was last replaced, i.e., timer reset. The time may be integral within the microprocessor or a separate component. The timer may be reset, either manually or automatically, every time the filter cartridge is replaced. The timer may also track the cumulative time that has transpired since the first operation of the filter system. When tracking the cumulative time, both the second signal threshold time and time-base useful life may be based upon the tracked cumulative time for each successive filter cartridge and replacement cartridge.
In addition, microprocessor 118 is programmed to also operate indicator 2 to provide a user a third signal (e.g., operate a blinking red LED). The third signal may be configured to signal to the user (e.g., via a blinking LED) that the filter cartridge is approaching its useful life (volumetric and/or time-based useful life), and should be changed immediately. Finally, the microprocessor may be programmed to operate indicator 2 to provide a user a fourth signal to indicate that the filter cartridge has reached its useful, volumetric or time-based, and should be changed immediately. To signal this, the microprocessor may cause the indicator 2 (e.g., blinking red LED) to change to another signal such as a solid red LED. At this end of useful life of the filter cartridge, the microprocessor may also be programmed to operate the diverter valve or other mechanisms to prevent any further fluid flow through filter system 1. Also, it is understood that more than one indicator may be used to provide the signals to the user, as well as more than the three exemplary signals described herein may be used. Microprocessor 118 may comprise any conventional microprocessor unit as known to one of ordinary skill in the art. One exemplary microprocessor may comprise a microprocessor commercially available from Sonix Technology Co. of Chupei City, Taiwan, model/catalog number SN8P2501B.
Microprocessor 118 may use a combination of time and volumetric flow to determine what color the LED (indicator 2) should be when the filter is used. Table 1 below summarizes the decision matrix. For example, if the filter cartridge has been in the device for 55 days and has filtered 70 gallons (265 liters), the LED will flash yellow. If the filter cartridge has been in the device for greater than 90 days, the LED will light solid red no matter how many gallons have been filtered.
Filter platform 10 may also comprise a battery housing 152 connected to support structure 54 and a battery 150 stored within the battery housing. Battery 150 may be electrically connected to one or more of the components of the filter system, including but not limited to indicator 2, the microprocessor, signal generator 107, the signal detector, and/or diverter valve 70. In the exemplary embodiment shown, battery 150 is electrically connected to microprocessor 118 and indicator 2. One exemplary battery that may be used in filter platform 10 comprises a standard lithium coin cell battery commercially available from Energizer of St. Louis, Mo., model/catalog number CR2430.
In addition, filter system 1 may further comprise filter housing 130 connected to body 40 (e.g., support structure 54), a filter cartridge 131 disposed within a reservoir 135 of filter housing 130, and a pressure vessel cap 132a connected to filter housing 130 to form a pressure vessel to contain filter cartridge 131 as shown in
Flow diverter 151 also may include a nozzle 700 that is in fluid communication with the reservoir, and ultimately, housing outlet 133. Nozzle 700 may comprise flow directors (e.g., flow directors 701, 702, and 703), which optionally may be positioned in a radial orientation. It is understood that nozzle 700 may comprise any number of flow directors in any number of configurations as known to one of ordinary skill in the art. Nozzle 700 may comprise any number of conventional nozzles known to one of ordinary skill in the art. Flow diverter 151, in an alternative embodiment, may not include a nozzle.
Filter housing 130 may be connected to support structure 54 using a variety of connection devices and methods as known to one of ordinary skill in the art, including but not limited to bolt and nut connections, welds (e.g., sonic welds), snap fit connections, adhesives, etc. Alternatively, filter housing 130 may be connected to lower body 42, thus enabling filter platform 10 to not comprise support structure 54. As shown in
A filter housing inlet 134 is in fluid communication with flow meter outlet 105, placing the filter cartridge in fluid communication with flow meter 100 as shown in
Filter housing 130, in the exemplary embodiment shown, filter cap 132 may threadingly engage filter housing 130 to form a pressure vessel. The filter cap 132 may also comprise an outer aesthetic surface. The filter cap 132 may also comprise a cap tab (not shown) that projects from an inside surface of the cap 132. The cap tab is positioned such that as the filter cap 132 is threaded onto the filter housing 130, the cap tab engages a respective cartridge tab 710 that extends from the filter cartridge, and causes the filter cartridge to move into its proper alignment within the filter housing 130. In addition, the cap tab engagement with the cartridge tab may also assist in breaking the seal of an o-ring filter seal 711 on filter cartridge 131 as shown in
In the exemplary embodiment shown in
In this configuration, when a used filter cartridge is removed from filter housing 130, reset magnet 136, due to its upward spring bias, will move into an up position. When a replacement filter cartridge 131 is positioned into filter housing 130 and onto reset magnet 136, the filter cartridge pushes reset magnet 136 downward into is down position. This movement of reset magnet 136 from its up position to its down position causes the reed switch to operate, which, in turn, signals microprocessor 118 and/or the timer to reset the volumetric flow and/or elapsed time to zero (0). Thus, every time cap 136 is removed to replace the used filter cartridge with a new one, the volumetric flow and/or time is reset back to zero (0).
Filter cartridge 131 may comprise a variety of commercially available filter cartridges, including but not limited to commercially available filters such as, for example, PUR Plus Filter and PUR Ultimate Filter, which are commercially available from The Procter & Gamble Company, Cincinnati, Ohio. Such filter cartridges may comprise carbon block having either axial or radial flow as known to one of ordinary skill in the art. The filter cartridge may also comprise an outer wrap such as a sediment wrap made from a variety of materials, including but not limited to woven and non-woven substrates made of polyolefin fibers, glass fibers, polypropylene, and cellulose, as known to one of ordinary skill in the art. Exemplary filter materials and cartridges that may be used with the present invention may include, but are not limited to, those shown and described in the following co-pending and commonly assigned U.S. Application Ser. Nos.: 09/832,581; 09/935,962; 09/935,810; 10/464,209; 10/464,210; 10/643,669; 10/665,948; 10/705,572; 10/705,174; 10/771,778; 10/840,578; or any combination thereof, which are all herein incorporated by reference. Exemplary filter materials and cartridges that may be used with the present invention may include those shown and described in the following U.S. Pat. Nos. 4,753,728; 5,019,311; 5,147,722; 5,189,092; 5,249,948; 5,331,037; 5,527,451; 5,536,394; 5,709,794; 5,840,348; 5,882,507; 5,882,517; 6,103,114; 6,057,262; 6,368,504; 6,630,016; 7,150,829; 7,153,438; or any combination thereof, which are all herein incorporated by reference.
Referring
Horizontal filter system 750 may comprise all or any combination of the components described above herein with regard to vertical oriented filter system 1 as shown in
In these embodiments, filter cap 132 may also comprise a reset magnet 137 disposed thereon or therein. As cap 132 is connected back on (e.g., threaded onto) filter housing 130, reset magnet 137 causes reset reed switch 140 which may be in electrical communication with and mounted on reset circuit board 141 to reset the tracked volumetric flow and/or elapsed time within the microprocessor and/or timer to zero (0) as described above herein. Thus, every time cap 136 is removed to replace the used filter cartridge with a new one, the volumetric flow and/or time is reset back to zero (0). The reset reed switch 140 and reset circuit board 140 may be positioned anywhere along the filter system.
Referring to
As shown in
Referring to
As shown in
Referring to
Referring to
Quick connect device 630 may include a first locking device 631, a spring 633, a first actuator 639a, a second locking device 632 opposite first locking device 631, and a second actuator 639b. First actuator 639a is fabricated to be integral to first locking device 631. Second actuator 639b is fabricated to be integral to second locking device 632. As shown in
When first and second locking devices 631 and 632 are in the first position (A), the first and second locking devices slide into the notch of adaptor 620 and hold the water filter system on the adaptor, which is connected to an end of a water faucet. When a user presses inwardly on first and second actuators 639a and 639b, respectively, the first and second locking devices slide out of the notch and away from adaptor 620 into a second position (B). First and second locking devices 631 and 632 when sliding into second position (B), they move relative to each other and compress spring 633 between outer surface 635 and inside surface 637. Once the user releases the force against the first and second actuators, the first and second locking devices are forced (biased) back into first position (A).
Adaptor body 1012 may be fabricated using any conventional methods such as compression or injection molding and/or machining from a variety of conventional materials, including but not limited to metals, plastics such as polymers (e.g., acrylonitrile butadiene styrene (ABS), polycarbonate, polyethylene), composite materials, or any combination thereof as known to one of ordinary skill in the art.
Threaded end 1013 may comprise external threading 1014 disposed within body 1012. Threaded end 1013 may be threadingly engaged to a threaded end (internal threaded) of a water faucet, e.g., a water faucet positioned at a kitchen sink. As set forth below herein in alternative exemplary embodiments, threaded end 1013 may comprise internal threading disposed within body 1012 in order to threadingly engage an external threaded end of a water faucet as known to one of ordinary skill in the art. Threads 1014 may also comprise any conventional threading and be fabricated from a variety of materials such as metal, plastics (e.g., polymers), composite materials, or any combination thereof as known to one of ordinary skill in the art. Also, threads 1014 may be part of an insert that is installed within and connected to aperture 1000 or formed as an integral part of the aperture itself. Threading 1014 of adaptor 1000 is configured such that adaptor 1000 may be threadingly connected or attached to an end of a conventional faucet in order to mounted and connect a faucet-mounted water filter system to flange end 1016 of the adaptor, placing the water filter system in fluid communication with the water faucet.
Although not required, adaptor 1000 may also include a gasket or seal (not shown) that is configured to make the adaptor connection to the faucet waterproof or leak proof and/or a aerator (not shown) to provide aeration to the water flowing from the adaptor as known to one of ordinary skill in the art. It is understood that this and other examples shown and described herein are used for illustration purposes, and not limitation. It is also understood that adaptor 1000 may be used to connect other devices such as other water devices such as a sprayer to water supplies such as a hose, pump, etc. as known to one of ordinary skill in the art.
Flanged end 1016 may comprise a flange 1015. In this exemplary embodiment, flange 1015 is defined by a channel 1017 disposed within body 1012 adjacent to flange 1015. However, it is understood that flange 1015 may be fabricated such that flange 1015 extends radially from external surface 1018 such that body 1012 does not include channel 1017. Flange 1015 and/or channel 1017 are configured to receive, engage, and connect to a quick connect/disconnect device on a faucet-mounted water filter system. In one exemplary embodiment, flange end 1016 is inserted into an inlet of the quick connect/disconnect device such that one or more spring-biased locking mechanisms slide past flange 1015, and then spring and/or lock into place in channel 1017, securing and connecting the faucet-mounted water filter system onto adaptor 1000. If the now connected adaptor is connected to a water faucet, then the faucet-mounted water filter system is connected by adaptor 1000 to the water faucet end. The quick connect/disconnect device also includes one or more actuators for moving (disengaging) the locking mechanism(s) out of channel 1017, thus permitting the faucet-mounted water filter system to be quickly and efficiently removed from the end of the faucet.
Adaptor 1000 may also comprise a water inlet 1020 positioned at threaded end 1013 and a water outlet 1030 positioned at flanged end 1016. When adaptor 1000 is connected to an end of a water faucet, water inlet 1020 receives water from the faucet end and directs it into the adaptor toward water outlet 1030. As shown in
Outlet 1003 may comprise an outlet chamber 1032 disposed within annular body 1012 of adaptor 1000. Bottom wall 1022 may comprise outer flow channels 1026 that connect in fluid communication first inlet chamber 1021 with outlet chamber 1032, and thus ultimately inlet 1020 with outlet 1030. Specifically, in the exemplary embodiment shown in
Inlet 1020, in the exemplary embodiment, comprises sixteen (16) outer radial ribs 1027 equally spaced about and coaxially-aligned with longitudinal axis L-L′. As shown in
As shown, outer flow channels 1026 may comprise a substantially quadrilateral shape, wherein two of its sides may be formed by outer annular rib 1023, inner annular rib 1024, and two adjacent outer radial ribs 1025 positioned on either side of outer flow channel 1026. It is understood that outer flow channels 1026 may comprise any shape, length, and/or configuration and that the shapes, lengths, and/or configurations described and shown herein are for illustrations purposes only, and not limitation.
In addition, second inlet chamber 1040 comprises an annular interior side wall 1041 and a bottom wall 1042 connected to interior side wall 1041. Bottom wall 1042 may comprise a depth (C) as shown in
In addition, annular rib 1045 intersects first long rib 1043 at two points, each point positioned about one-fourth (¼) of its length from the interior side wall 1041. Also, annular rib 1045 intersects second long rib 1044 at two points, each point positioned about one-fourth (¼) of its length from the interior side wall 1041. In this exemplary embodiment, first and second long ribs 1043 and 1044, annular rib 1045, and short radial ribs 1048 form eight (8) substantially quadrilateral-shaped first inner flow channels 1046 equally spaced about and coaxially-aligned with longitudinal axis L-L′, and four (4) substantially triangular-shaped, second inner flow channels 1047 equally spaced about and coaxially-aligned with longitudinal axis L-L′ as well. Second inner flow channels 1047 are interior to the eight (8) first inner flow channels 1046 and thus are concentric to and coaxially-aligned with the eight (8) first inner flow channels 1046 about longitudinal axis L-L′. With regard to the second inner flow channels 1047, first long rib 1043 forms substantially a first side of the triangle, second long rib 1044 forms substantially a second side, and annular rib 1045 forms substantially a third side of the triangle. Additionally, first and second inner flow channels 1046 and 1047 may connect in fluid communication second inlet chamber 1040 to outlet chamber 1032.
It has been found, in certain embodiments, that the depth (C) of bottom wall 1042 (which is the same as the depth of first long rib 1043, second long rib 1044, annular rib 1045, and/or short radial ribs 1048), which essentially defines the length of first and second inner channels 1046 and 1047, respectively, has an impact on the water flow straightening capabilities of the adaptor 1000. In one exemplary embodiment, depth (C) of bottom wall 1042 may comprise from about 0.25 mm to about 40 mm, from about 0.5 mm to about 35 mm, from about 0.75 mm to about 30 mm, and/or from about 1.0 mm to about 20 mm. In another exemplary embodiment, depth (C) may be equivalent to or substantially the same length as the length of adaptor 1000 such that first and second inner flow channels 1046 and 1047 run substantially the entire length of adaptor 1000.
It is understood that first and second inner flow channels 1046 and 1047 may comprise the same or substantially the same number, shape, size, and/or configuration as one another and may comprise a variety of different number, shapes, sizes, and/or configurations. As shown, the entrances to the inner flow channels 1046 and 1047 are substantially flush with bottom wall 1042 as shown in
When adaptor 1000 is threadingly connected to an end of a water faucet and the water is turned on, water will exit the water faucet into first inlet chamber 1021 via inlet 1020, the water flow may split into two flow paths: one, a portion may flow into and through outer flow channels 1026 to outlet chamber 1032; and two, a portion may flow into second inlet chamber 1040, through first and second inner flow channels 1046 and 1047 into outlet chamber 1032. After which, the water may flows through outlet chamber 1032 and exit adaptor 1000 via outlet 1030. This dual flow path may happen sequentially and/or simultaneously. One or more of outer inlet chamber 1021, second inlet chamber 1040, outlet chamber 1032, outer flow channels 1026, and/or first and second inner flow channels 1046 and 1047 straighten or assist in straightening the stream of water that exits from outlet 1030 of the adaptor. This flow straightening function of the adaptors internal design prevents users from getting sprayed with water when the faucet-mounted filter system is not connected to the adaptor, i.e., connected to the faucet, but the adaptor is still connected to the faucet.
It understood that adaptor 1000 may comprise other variations of outer flow channels 1026 such as wherein certain sides of the flow channels extend axially from bottom wall 1022 toward inlet 1020 (e.g., see
In one or more exemplary embodiments, adaptor 1000 may comprise the range of dimensions as set forth below and shown in
In the exemplary embodiment shown in
Referring to
In the exemplary embodiment set forth in
It has been discovered that since adaptor 1000 includes gripping areas 1050 that comprise a pressure bearing face 1054 and a non-pressure bearing face 1056 (i.e., angle β is less than angle α), adaptor 1000 provides a user both visual and tactile signals as to which rotational direction is the correct direction such as which rotational direction is required to threadingly connect adaptor 1000 onto a water faucet end. It is understood that adaptor 1000 may be alternatively configured to provide visual and tactile signals as to which rotational direction is required to loosen adaptor 1000. An adaptor of the present invention that provides visual and tactile signals as to which single rotational direction is correct is defined herein as unidirectional This is very beneficial to a user when trying to install a faucet mounted water filter system onto a water faucet because the visual and tactile signals simplify and expedite the installation of the adaptor by eliminating uncertainty about the correct rotation of the adaptor that is required. In addition, body 1012 may be fabricated such that it has a top surface 1019 that is configured to be level or linear (i.e., no curvature) such that a user may use the top surface to align the adaptor in an orientation that permits easy threading of the adaptor onto the faucet during the installation of the water filter system.
As shown in
The plurality of pressure bearing faces 1054 may be positioned or spaced-apart from each other at a variety of intervals along circumference 1011. For example, each pressure bearing face of the plurality of pressure bearing faces may be spaced from each other at an angle θ of from about 1 degree to about 180 degrees, alternatively from about 30 degrees to about 90 degrees. In the exemplary embodiment shown in
All documents cited in the Detailed Description of the Invention are, in relevant part, incorporated herein by reference; the citation of any document is not to be construed as an admission that it is prior art with respect to the present invention. To the extent that any meaning or definition of a term in this written document conflicts with any meaning or definition of the term in a document incorporated by reference, the meaning or definition assigned to the term in this document shall govern.
While particular embodiments of the present invention have been illustrated and described, it would be obvious to those skilled in the art that various other changes and modifications can be made without departing from the spirit and scope of the invention. It is therefore intended to cover in the appended claims all such changes and modifications that are within the scope of this invention.
This application claims the benefit of U.S. Provisional Application Ser. No. 60/970,150 filed Sep. 5, 2007. This application is related to commonly assigned U.S. Design patent application Ser. Nos. 29/306,881 filed Apr. 17, 2008 entitled “CONNECTOR FOR A FAUCET MOUNTED WATER FILTER”; 29/306,882 filed Apr. 17, 2008 entitled “A CONNECTOR FOR A FAUCET MOUNTED WATER FILTER”; and 29/305,377 filed Mar. 19, 2008 entitled “THREADED NUT”. This application is also related to commonly assigned U.S. patent application Ser. Nos. 11/446,580 filed Jun. 2, 2006 entitled “NUT FOR ATTACHING TWO DEVICES AND METHOD FOR PROVIDING THE SAME”; and 61/045,858 filed Apr. 17, 2008 entitled “ADAPTOR FOR CONNECTING A FAUCET MOUNTED WATER FAUCET FILTER TO A WATER FAUCET” the disclosures of which are incorporated herein by reference.
| Number | Date | Country | |
|---|---|---|---|
| 60970150 | Sep 2007 | US |
