CA1135633A - Water purifier - Google Patents
Water purifierInfo
- Publication number
- CA1135633A CA1135633A CA000362830A CA362830A CA1135633A CA 1135633 A CA1135633 A CA 1135633A CA 000362830 A CA000362830 A CA 000362830A CA 362830 A CA362830 A CA 362830A CA 1135633 A CA1135633 A CA 1135633A
- Authority
- CA
- Canada
- Prior art keywords
- water
- valve
- housing
- cartridge
- inlet
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Expired
Links
Landscapes
- Water Treatment By Sorption (AREA)
Abstract
ABSTRACT OF THE DISCLOSURE
A filter cartridge, for an internally by-passable water purifier apparatus, is in the form of a tubular shell that has inlet and outlet walls with at least one opening being defined in each. A water filtering material is disposed within the shell.
Running lengthwise of the shell is an arrangement for guiding water from the inlet to the outlet regions and exclusive of the filtering material. That arrangement is either interiorly of or external to the shell.
The cartridge is usable in a purifier apparatus that has a housing with an inlet for the flow of water as well as a single outlet area for discharging the flow of water. A channel defines the path of water flow from the inlet to the outlet, and a chamber is defined in that channel in the path of the flow. One valve is disposed in the channel for controlling the flow of water from the inlet through the cartridge to the outlet. In addition, an-other valve is disposed in the channel for controlling the flow of water from the inlet to the outlet along a path that by-passes the cartridge.
A filter cartridge, for an internally by-passable water purifier apparatus, is in the form of a tubular shell that has inlet and outlet walls with at least one opening being defined in each. A water filtering material is disposed within the shell.
Running lengthwise of the shell is an arrangement for guiding water from the inlet to the outlet regions and exclusive of the filtering material. That arrangement is either interiorly of or external to the shell.
The cartridge is usable in a purifier apparatus that has a housing with an inlet for the flow of water as well as a single outlet area for discharging the flow of water. A channel defines the path of water flow from the inlet to the outlet, and a chamber is defined in that channel in the path of the flow. One valve is disposed in the channel for controlling the flow of water from the inlet through the cartridge to the outlet. In addition, an-other valve is disposed in the channel for controlling the flow of water from the inlet to the outlet along a path that by-passes the cartridge.
Description
llæ633 WATER PURIFIER
The present invention pertains to an internally by-passable water purifier apparatus as well as to a filter cart-ridge therefor. More particularly, it relates to both a filter cartridge and an apparatus that permits the selective distribution from a common source of either purified or non-purified water.
.
Surveys have indicated that a significant percentage o water obtained from individual taps in the home and the like con-tains one or more bacterialogical or chemical constitutents that exceeds limits set forth in standards issued by public health services or authorities. In some cases, such samples evidence a potential danger. Various studies have identified a need for improved systems to control at least asethetically undesirable concentrations of various minerals and other constituents as well as color, taste and odor. The problem is one of both preventing the transmission of disease or the like as well as in overcoming effects that may be adverse to the sensitibilities of the user.
One answer has been a steadily increasing usage of bottled water. At the same time, there have been a number of entries into the marketplace of point-of-use purification devices.
The latter have included in-line filters, under-the-sink filters, free-standing drink-size separate filter units and filter devices that attach to the conventional sink faucet or to the typical aerator secured thereto.
In generai, a somewhat limited number of processes have been found to be capable of removing undesirable materials from water. These include réverse osmosis, freezing, filtration, chemical oxidation, distiilation, a~sorption on powdered charcoal and adsorption on granular activated carbon. Carbon filtration has been found to be particularl~ effective in removing some detergents, insecticides, viruses, specific chemical pollutants and taste and odor pollutants. For example, carbon has long been used for the removal of chlorine from water in the brewing S and soft drink manufacturing industries. Activated carbon removes tastes and odors from water by an adsorption process in which substances of one kind are accumulated on the surfaces of another.
The activated carbon has extremely large surface areas that make it efficient. The activation process produces pores that con-tribute substantially to increased surface area of treatment.In some cases, the ac~ivated carbon h~s been treated with olio-godynamic silver which acts as a bactericide and self-sanitizing agent.
One obviously desirable location for a water purifier is in the vicinity of the kitchen sink in a conventional home. The usual kitchen sink will have one or two-faucets for dispensing hot and cold tap water. In addition, many sinks now include a so-called vegetable spray attached to a hose for usage as its name implies. The addition of a water purifying apparatus ha~
frequently meant the undesired occupation of counter space, under-sink space or interference to convenient utilization because of the need for flexible hoses. In fact, an objective by some manufacturers, to achieve comparatively low cost in such apparatus, has led to the production of units which attain that end only at the expense of interference with space utilization or aesthetic unattractiveness.
The present invention pertains to an internally by-passable water purifier apparatus as well as to a filter cart-ridge therefor. More particularly, it relates to both a filter cartridge and an apparatus that permits the selective distribution from a common source of either purified or non-purified water.
.
Surveys have indicated that a significant percentage o water obtained from individual taps in the home and the like con-tains one or more bacterialogical or chemical constitutents that exceeds limits set forth in standards issued by public health services or authorities. In some cases, such samples evidence a potential danger. Various studies have identified a need for improved systems to control at least asethetically undesirable concentrations of various minerals and other constituents as well as color, taste and odor. The problem is one of both preventing the transmission of disease or the like as well as in overcoming effects that may be adverse to the sensitibilities of the user.
One answer has been a steadily increasing usage of bottled water. At the same time, there have been a number of entries into the marketplace of point-of-use purification devices.
The latter have included in-line filters, under-the-sink filters, free-standing drink-size separate filter units and filter devices that attach to the conventional sink faucet or to the typical aerator secured thereto.
In generai, a somewhat limited number of processes have been found to be capable of removing undesirable materials from water. These include réverse osmosis, freezing, filtration, chemical oxidation, distiilation, a~sorption on powdered charcoal and adsorption on granular activated carbon. Carbon filtration has been found to be particularl~ effective in removing some detergents, insecticides, viruses, specific chemical pollutants and taste and odor pollutants. For example, carbon has long been used for the removal of chlorine from water in the brewing S and soft drink manufacturing industries. Activated carbon removes tastes and odors from water by an adsorption process in which substances of one kind are accumulated on the surfaces of another.
The activated carbon has extremely large surface areas that make it efficient. The activation process produces pores that con-tribute substantially to increased surface area of treatment.In some cases, the ac~ivated carbon h~s been treated with olio-godynamic silver which acts as a bactericide and self-sanitizing agent.
One obviously desirable location for a water purifier is in the vicinity of the kitchen sink in a conventional home. The usual kitchen sink will have one or two-faucets for dispensing hot and cold tap water. In addition, many sinks now include a so-called vegetable spray attached to a hose for usage as its name implies. The addition of a water purifying apparatus ha~
frequently meant the undesired occupation of counter space, under-sink space or interference to convenient utilization because of the need for flexible hoses. In fact, an objective by some manufacturers, to achieve comparatively low cost in such apparatus, has led to the production of units which attain that end only at the expense of interference with space utilization or aesthetic unattractiveness.
- 2 11;~633 In accordance with the present invention there is provided a water purifying device for operation with a water purifying cartridge, said device including:
a housing having a water inlet and a water outlet, valve means for controlling flow between said inlet and said outlet, and a chamber for receiving the cartridge, the hous~ng further including means for conveying water from the inlet to said outlet along a filtering path including the cartridge when received in said chamber and for conveying water along a bypass path bypassing the cartridge, said valve means being manually actuable from the outside of the housing to control the passage of water along the filtering and bypass paths.
Particular preferred embodiments of the invention will now be described, by way of example, in the follcwing description taken in connection with the accompanying diagrammatic drawings, in the several figures of which like reference nUmerals identify like elements, and in which:
Figure 1 is a perspective view of a first embodiment of water purifier apparatus;
Figure 2 is an enlarged vertical cross-sectional view of the apparatus of Figure 1 - 2a ~135633 Figuxe 3 is an enlarged cross-sectional view taken along the line 3-3 in Figure 2;
Figure 4 is an enlarged cross-sectional view taken along the line 4-4 in Figure 2;
Figure 5 is an enlarged cross-sectional view taken along the line 5-5 in Figure 2;
Figure 6 is an enlarged cross-sectional view taken along the line 6-6 in Figure 2;
Figure 7 is an enlarged cross-sectional view taken along the line 7-7 in Figure 2;
Figure 8 is a perspective view of a second embodiment of water purifier apparatus;
Figure 9 is a rear elevational view of the apparatus of Figure 8;
Figure 10 is a side elevational view of the apparatus of Figure 8;
Figure 11 is a front elevational view of the apparatus of Figure 8;
Figure 12 is en enlarged cross-sectional view taken along ~he lines 12-12 in Figure 9;
Figure 13 is an enlarged fragmentary cross-sectional view of a portion of Figure 12, Figure 14 is a cross-sectional view taken along the line 14-14 in Figure 12, Figure 15 is a cross-sectional view taken along the line 15-15 in Figure 14;
Figure 16 is a cross-sectional view taken along the line 16-16 in Figure 14;
Figure 17 is a fragmentary and enlarged cross-sectional view taken along the line 17-17 in Figure 14;
~135633 Figure 18 is a cross-sectional view taken alon~ the line 18-18 in Figure 14;
Figure 19 is an exploded perspective view of a portion of the apparatus shown in Figures 8-18; and Figures 20-22 are reverse perspective views of portions of the apparatus shown in Figure 19.
A first embodiment of an internally by-passable water purifier 20 includes a housing 22 which has an inlet 24 for ad-mitting a flow of water and an outlet arrangement 26 for discharg-ing a flow of water. Extending all of the way from inlet 24 to outlet 26 is a continuous channel 28 that defines a path for the flow of water from the inlet to the outlet. Channel 28 includes a chamber 30 that is shaped to receive a water-purifying cartridge 32 that i~ disposed in the path of water flow. A first valve 34 is disposed in channel 28 to control the flow of water from inlet 24 through cartridge 32 to outlet 26. A second valve 36 is disposed also within channel 28 for controlling the flow of water from inlet 24 to outlet 26 in by-pass of cartridge 32. It will be observed that chamber 30 is located upstream from valves 34 and 36. Moreover, chamber 30 and cartridge 32 together define a passage 37 (see Figure 5) for the flow of water around cartridge 32 so as to be under the control of valve 36.
As specifically shown, housing 22 includes a first portion 38 that contains outlet 26 and valves 34 and 36. Housing 22 also includes a second portion 4G that is threaded into first portion 38 so as to secure the two portions together as well as to seat cartridge 32 securely within chamber 30. Portion 40 downwardly depends from one end of portion 38 so as to serve as a handle which is dimensioned to be gripped by the human hand. Inlet 24 is internally threaded so as to form a coupling that desira~ly ~35633 conforms to those which are now standard for connection to the conventional vegetable-spray hose associated with many ordinary kitchen sinks.
Each of valves 34 and 36 includes a respective valve operator 42 and 44 that projects from the end of portion 38 above the upper end of portion 40 and opposite outlet arrangement 26.
The outlet arrangement includes a first opening 46 that is in communication with valve 34. At least one additional opening 48 is in communication with valve 36. Preferably, however, there are a plurality of openings 48 spaced individually apart to collectively encircle opening 46, so as to permit usage of water delivered from openings 48 in the manner of the ordinaxy vegetable spray associated with the typical kitchen sinkO
Directing attention more- specifically to cartridge 32, it includes a tubular shell 50 closed at one end by an inlet wall 52 and at the other end by an outlet wall 54. An opening 56 is formed in inlet wall 52, while an opening 58 is formed in outlet wall 54. A water filtering material 60 is disposed within shell 50 between inlet and outlet walls 52 and 54 and in a posi-tion between openings 56 and 58. In correspondence with filters as described in the introduction hereto, filter material 60 is primarily of granulated activated carbon. Preferably, the carbon is mixed with silver zeolite so as to inhibit bacterial growth within the filter. Ribs 62, projecting outwardly from the ex-ternal surface of shell 50, run lengthwise of the shell for guid-ing water from the vicinity of inlet wall 52 to the vicinity of outlet wall 54, so as to define a water flow path which is ex-clusive of filter material 60. Ribs 62 are laterally-spaced from one anoth~r so as to define a plurality of m~tally-adjacent water-flow channels. At least one pair of such ribs 62 are required.
1~35633 Preferably, however, a larger plurality of the ribs are spaced around the circumference so as to provide support for shell 50 within the receiving structure defined by chamber 30 and, therefore, also 50 as to define a plurality of the water flow channels;
The rib structures al30 are extended into the inlet end.
That is, they define a plurality of outwardly-projectinq ribs 64, aligned with ribs 62, that accommodate the flow of water around inlet wall 52 into the longitudinal passages 37 defined by ribs 62.
At the upper end of cartridge 32 is a tubular seal 66 of resilient material, such as rubber, that encircles and projects outwardly from around opening 58. Filter material 60 is sand-wiched between a pair of layers 68 of fibrous sheet, such as ordinary felt, individually disposed adjacent to respective different ones of end walls 52 and 54. Layers 68 serve to hold the carbon granules in place as well as, at the upstream endr to remove ferrous oxides that tend to become jelly-like and, therefore, would tend to clog the carbon granules. At the down-stream end, layer 68 removes so-called carbon "fines" which are a powder-like derivative from the main granular filter. Also desirably included are ribs 70 that project inwardly fromeach of inlet and outlet walls 52 and 54 in a position to hold layers 68 spaced from the respec~ive ones of the end walls and thereby permit distribution of the flowing water through the entirety of the filter material.
Turning to what may seem to be mere details, but yet which represent valuable features of the whole apparatus, valves 34 and 36 each i~clude a valve stem 72 upon ~he inner end of which is a valve head 74 which captivates an 0-ring 76 that, upon closing of the valve, presses into an opening in an internal wall 78 of housing portion 38 and in whi~h such opening therein defines the valving flow path. Valve operators 42 and 44 are secured on the other end portions of valve stems 72, with a compression spring 80 encircling the valve stem between the valve operators and another internal wall 82 formed as part of housing portion 38. An O-ring 83 secures the other end portion of each valve operator within a receiving boss formed in wall 8~. Valve 34 permits water from within the associat0d portion of channel 28 defined by opening 58 to be delivered through alsleeve 84, se-cured by studs 86~Qn~ally within the bore of portion 38, and preferably through a mesh screen 88, for delivery from central outlet 46. Depression of valve operator 42 on valve 34 thus permits the delivery through the device and from outlet 46 of water purified by passage through cartridge 32.
On the other hand, depxession of valve operator 44 on valve 36 permits the delivery through apertures 48 of water that flows alongside the exterior of cartridge 32, through an opening 89 in the bottom of portion 38 and along the exterior of sleeve 84. Thus, the water is emitted from apertures 48 as a spray of ordinary tap water. This extends the life of cartridge 32 by obviating its use when it is unnecessary for the purpose at hand to employ the purification capabilities of the unit.
Other detailed ramifications of the unit include the formation of outlets 46 and 48 in a cap 90 that is threadably secured into the discharge end of housing portion 38 and seal-ingly affixed thereto by means of an O-ring 92. Downwardly-depending housing portion 40 is threadably secured into the other housing portion 38 by means of threaded section 92. An
a housing having a water inlet and a water outlet, valve means for controlling flow between said inlet and said outlet, and a chamber for receiving the cartridge, the hous~ng further including means for conveying water from the inlet to said outlet along a filtering path including the cartridge when received in said chamber and for conveying water along a bypass path bypassing the cartridge, said valve means being manually actuable from the outside of the housing to control the passage of water along the filtering and bypass paths.
Particular preferred embodiments of the invention will now be described, by way of example, in the follcwing description taken in connection with the accompanying diagrammatic drawings, in the several figures of which like reference nUmerals identify like elements, and in which:
Figure 1 is a perspective view of a first embodiment of water purifier apparatus;
Figure 2 is an enlarged vertical cross-sectional view of the apparatus of Figure 1 - 2a ~135633 Figuxe 3 is an enlarged cross-sectional view taken along the line 3-3 in Figure 2;
Figure 4 is an enlarged cross-sectional view taken along the line 4-4 in Figure 2;
Figure 5 is an enlarged cross-sectional view taken along the line 5-5 in Figure 2;
Figure 6 is an enlarged cross-sectional view taken along the line 6-6 in Figure 2;
Figure 7 is an enlarged cross-sectional view taken along the line 7-7 in Figure 2;
Figure 8 is a perspective view of a second embodiment of water purifier apparatus;
Figure 9 is a rear elevational view of the apparatus of Figure 8;
Figure 10 is a side elevational view of the apparatus of Figure 8;
Figure 11 is a front elevational view of the apparatus of Figure 8;
Figure 12 is en enlarged cross-sectional view taken along ~he lines 12-12 in Figure 9;
Figure 13 is an enlarged fragmentary cross-sectional view of a portion of Figure 12, Figure 14 is a cross-sectional view taken along the line 14-14 in Figure 12, Figure 15 is a cross-sectional view taken along the line 15-15 in Figure 14;
Figure 16 is a cross-sectional view taken along the line 16-16 in Figure 14;
Figure 17 is a fragmentary and enlarged cross-sectional view taken along the line 17-17 in Figure 14;
~135633 Figure 18 is a cross-sectional view taken alon~ the line 18-18 in Figure 14;
Figure 19 is an exploded perspective view of a portion of the apparatus shown in Figures 8-18; and Figures 20-22 are reverse perspective views of portions of the apparatus shown in Figure 19.
A first embodiment of an internally by-passable water purifier 20 includes a housing 22 which has an inlet 24 for ad-mitting a flow of water and an outlet arrangement 26 for discharg-ing a flow of water. Extending all of the way from inlet 24 to outlet 26 is a continuous channel 28 that defines a path for the flow of water from the inlet to the outlet. Channel 28 includes a chamber 30 that is shaped to receive a water-purifying cartridge 32 that i~ disposed in the path of water flow. A first valve 34 is disposed in channel 28 to control the flow of water from inlet 24 through cartridge 32 to outlet 26. A second valve 36 is disposed also within channel 28 for controlling the flow of water from inlet 24 to outlet 26 in by-pass of cartridge 32. It will be observed that chamber 30 is located upstream from valves 34 and 36. Moreover, chamber 30 and cartridge 32 together define a passage 37 (see Figure 5) for the flow of water around cartridge 32 so as to be under the control of valve 36.
As specifically shown, housing 22 includes a first portion 38 that contains outlet 26 and valves 34 and 36. Housing 22 also includes a second portion 4G that is threaded into first portion 38 so as to secure the two portions together as well as to seat cartridge 32 securely within chamber 30. Portion 40 downwardly depends from one end of portion 38 so as to serve as a handle which is dimensioned to be gripped by the human hand. Inlet 24 is internally threaded so as to form a coupling that desira~ly ~35633 conforms to those which are now standard for connection to the conventional vegetable-spray hose associated with many ordinary kitchen sinks.
Each of valves 34 and 36 includes a respective valve operator 42 and 44 that projects from the end of portion 38 above the upper end of portion 40 and opposite outlet arrangement 26.
The outlet arrangement includes a first opening 46 that is in communication with valve 34. At least one additional opening 48 is in communication with valve 36. Preferably, however, there are a plurality of openings 48 spaced individually apart to collectively encircle opening 46, so as to permit usage of water delivered from openings 48 in the manner of the ordinaxy vegetable spray associated with the typical kitchen sinkO
Directing attention more- specifically to cartridge 32, it includes a tubular shell 50 closed at one end by an inlet wall 52 and at the other end by an outlet wall 54. An opening 56 is formed in inlet wall 52, while an opening 58 is formed in outlet wall 54. A water filtering material 60 is disposed within shell 50 between inlet and outlet walls 52 and 54 and in a posi-tion between openings 56 and 58. In correspondence with filters as described in the introduction hereto, filter material 60 is primarily of granulated activated carbon. Preferably, the carbon is mixed with silver zeolite so as to inhibit bacterial growth within the filter. Ribs 62, projecting outwardly from the ex-ternal surface of shell 50, run lengthwise of the shell for guid-ing water from the vicinity of inlet wall 52 to the vicinity of outlet wall 54, so as to define a water flow path which is ex-clusive of filter material 60. Ribs 62 are laterally-spaced from one anoth~r so as to define a plurality of m~tally-adjacent water-flow channels. At least one pair of such ribs 62 are required.
1~35633 Preferably, however, a larger plurality of the ribs are spaced around the circumference so as to provide support for shell 50 within the receiving structure defined by chamber 30 and, therefore, also 50 as to define a plurality of the water flow channels;
The rib structures al30 are extended into the inlet end.
That is, they define a plurality of outwardly-projectinq ribs 64, aligned with ribs 62, that accommodate the flow of water around inlet wall 52 into the longitudinal passages 37 defined by ribs 62.
At the upper end of cartridge 32 is a tubular seal 66 of resilient material, such as rubber, that encircles and projects outwardly from around opening 58. Filter material 60 is sand-wiched between a pair of layers 68 of fibrous sheet, such as ordinary felt, individually disposed adjacent to respective different ones of end walls 52 and 54. Layers 68 serve to hold the carbon granules in place as well as, at the upstream endr to remove ferrous oxides that tend to become jelly-like and, therefore, would tend to clog the carbon granules. At the down-stream end, layer 68 removes so-called carbon "fines" which are a powder-like derivative from the main granular filter. Also desirably included are ribs 70 that project inwardly fromeach of inlet and outlet walls 52 and 54 in a position to hold layers 68 spaced from the respec~ive ones of the end walls and thereby permit distribution of the flowing water through the entirety of the filter material.
Turning to what may seem to be mere details, but yet which represent valuable features of the whole apparatus, valves 34 and 36 each i~clude a valve stem 72 upon ~he inner end of which is a valve head 74 which captivates an 0-ring 76 that, upon closing of the valve, presses into an opening in an internal wall 78 of housing portion 38 and in whi~h such opening therein defines the valving flow path. Valve operators 42 and 44 are secured on the other end portions of valve stems 72, with a compression spring 80 encircling the valve stem between the valve operators and another internal wall 82 formed as part of housing portion 38. An O-ring 83 secures the other end portion of each valve operator within a receiving boss formed in wall 8~. Valve 34 permits water from within the associat0d portion of channel 28 defined by opening 58 to be delivered through alsleeve 84, se-cured by studs 86~Qn~ally within the bore of portion 38, and preferably through a mesh screen 88, for delivery from central outlet 46. Depression of valve operator 42 on valve 34 thus permits the delivery through the device and from outlet 46 of water purified by passage through cartridge 32.
On the other hand, depxession of valve operator 44 on valve 36 permits the delivery through apertures 48 of water that flows alongside the exterior of cartridge 32, through an opening 89 in the bottom of portion 38 and along the exterior of sleeve 84. Thus, the water is emitted from apertures 48 as a spray of ordinary tap water. This extends the life of cartridge 32 by obviating its use when it is unnecessary for the purpose at hand to employ the purification capabilities of the unit.
Other detailed ramifications of the unit include the formation of outlets 46 and 48 in a cap 90 that is threadably secured into the discharge end of housing portion 38 and seal-ingly affixed thereto by means of an O-ring 92. Downwardly-depending housing portion 40 is threadably secured into the other housing portion 38 by means of threaded section 92. An
3~ O-ring 94 insures sealing integrity. In addition, a collar 96 1~35633 preferably is sonically-welded at the entrance to the portions of channel 28 defined in housing portion 38. Collar 96 cooperates with outlet wall 54 of cartridge 32, along with seal 66, so as to insure the formation of a water-tight seal between the outlet end of cartridge 32 and the entrances into housing portion 38.
When greater sealing effect is desired, collar 96 may be formed to include a downwardly-depending boss that carries an external O-ring dimensioned to fit sealingly into opening 58. Still further, seal 66 may project from the outer perimeter of opening 58 so as to fit upwardly into the opening in collar 96.
The overall shape of the device in Figures 1-7 is par-ticularly attractive in that it closely resembles that of the conventional vegetable spray device ordinarily found in connection with many kitchen sinks. Yet, of course, it represents a signi-ficant improvement in that it also provides for selection of a stream of purified water. The conformation of the components is such as to enable a user very readily to replace cartridge 32 simply by unscrewing housing portion from 38, removing the expend-ed cartridge and substituting a new one.
Nevertheless, the embodiment of Figures 8-19 is presently preferred because it not only enables economy of construction but also provides for a filter cartridge conformation that has in-creased cost effectiveness. Water purifier 100 includes a hous-ing 102 that has an inlet 104 for admitting the flow of water and an outlet arrangement 106 for discharging a flow of water. A
channel 108 is defined through the housing so as to establish a path for the flow of water from inlet 104 to outlet arrangement 106. A chamber 110 is defined as part of channel 108 so as to receive a water-purifying cartridge 112 disposed in the path of water flow. A first valve 114 is disposed in channel 108 so as ~135633 to control the flow o~ water from inlet 104 to outlet 106 through cartridge 112. A second valve 116 is also disposed in channel 108 so as to control the flow of water from inlet 104 to outlet 106 but in a manner that is effective to by-pass cartridge 112.
Inlet 104 is formed to include a truncated seal seat 117 which extends to an internally-threaded bore that receives a coupling 118. A hose 119 is crimped by a band 120 into a pre-ferably nylon tube 121. A resilient C-washer 122 holds tube 121 so that band 120 is disposed within the bore of coupling 118. On the good upper end of.tu~e.l21 are a spacer washer 123 and a re-silient washer 124 held in place by a flange formed on the end of the tube. This entire coupling arrangement forms a swivel seal as conventionally used with a water hose of the type typically associated with the aforementioned vegetable spray. A similar approach is contemplated with respect to the embodiment of Figures 1-7.
In any event, the overall housing includes a first portion 126 which contains outlet arrangement 106 and valves 114 and 116 and a second portion 128 that depends downwardly from one end of portion 126 again as a handle dimensioned to be gripped by the human hand. Situated in association with portion 126 are valve operators 130 and 131 respectively for each of valves 116 and 114, the valve operators projecting from the end of portion 126 above the upper end of portion 128.
Included at the other end of housing portion 126 is a first opening 132 that is in communication with valve 114 and at least one additional opening 134 that is in communication with the other valve 116. As before, there preferably are a plurality of openings 134 ~paced individually apart so as collectively to encircle opening 132.
~135633 It will be observed t~at cartridge chamber 110 is, in this version, located downstream from valves 114 and 116.
Moreover, outlet openings 132 and 134 are formed in a cap 136 which closes one end of chamber 110. Cap 136 is threaded upon housin~ portion 126 ~o as both to secure the cap in place and seat cartridge 112 securely within chamber 110.
Chamber 110 and cartridge 112 together define a passage for the flow of water under control by valve 116 in by-pass of any action upon such flow of water by filter material 138 con-fined within cartridge 112. Again as before the filter materialpreferably is a granulate activated carbon mixed with a silver zeolite sandwiched be~ween fiberous sheets 140 and 140' of a material such ac felt. The by-passing is achieved by the in-clusion of a conduit 142 that runs entirely through cartridge 112.
Each of valves 114 and 116 includes a valve stem, re-spectively dominated by ~he numerals 144 and 146, that has one end, respectively 148 and 150, aligned to project within a corresponding hollow boss, respectively 152 and 154, that pro-jects outwardly from the inlet end of cartridge 112. A pair ofvalve guides, respectively 156 and 158, are formed in housing portion 126, with each of valves 114 and 116, and particularly their valve stems, being received in a corresponding one of valve guides 156 and 158. Of course, valve operators 130 and 131 . include a portion that is exposed to the exterior of the housing and each of which is affixed to one end of-the corresponding one of the valve stems. Each of valve guides 156 and 158 includes a locator seat, respectively 160 and 162, t~at is receptive of a corresponding one of hollow bosses 152 and 154 that project outwardly from the one end of cartridge 112. Moreover, each of 11;~5633 valve ~uides 156 and 158 receives an internal resilient seat, such as O-rings 164 and 168, for sealing cooperation with the corresponding valve stems. An external resilient seal 170, again an O-ring, seats each valve guide into the corresponding hollow boss. A snap ring 172 serves to provide retention against the spring force. A washer 174 is secured, as by sonic welding, to the inwardly projecting ends of the correspond-ing valve guides.
As particularly formed herein, valve operators 130 and 131 are complemented by an additional, but fixed, segment 176 that may well carry operating i~structions or other indicia.
Valve stems 144 and 146 are normally urged outwardly, to a water-path-closing condition, by compression springs 178 disposed between the respective ones of operators 130 and 131 and shoulders defined on respective valve guides 156 and 158. The end of hous-ing portion 126 adjacent to valve operators 130 and 131 is formed to include an outwardly projecting peripheral lip that seats both the valve operators and segment 176. Housing portion 128 is in the form of a cylindrical tube that is threadably secured at its upper end to housing portion 126 and sealed thereto by means of an O-ring 180.
The detailed construction of cartridge 112 is significant in its simplication of that which is necessary in the fabrication of the remainder of the purifier assembly. Thus, cartridge 112 includes an inlet wall 182 and an outlet wall 184. A locating rib 186 projects outwardly from outlet wall 184, extending at least generally around the periphery of that outlet wall. As before, internal spacing ribs 185 project inwardly from each end wall to hold the-active filter material in a spaced relationship in order to obtain a good flow profile. An apertured baffle plate 1~8 is spaced inwardly from inlet wall 182 and has recesR
190 to accommodate bosses 152 and 154. Baffle plate 188 and lateral openings 191 in boss 152 permit the flow of water de-flected by the baffle plate generally in the plane of inlet wall 182. It will be observed that bosses 152 and 154 also constitute recesses receptive of one end respective ones of valve stems 144 and 146 as well as the respective locator seats 160 and 162.
Moreover, bosses 152 and 154 also serve to position baffle plate 188 in slightly spaced relationship to inlet wall 182.
A portion 194 of conduit 142 is enlarged at its juncture with inlet wall 182. T~e degree of enlargement is sufficient so as to be receptive of valve stem 146. Boss 154, being dimen-sioned to constitute a recess that is receptive of one end of valve stem 146, tends to complete an overall structure that insures proper valve operation while yet not requiring specific structure in housing itself for that purpose. Cartridge 112 also includes a locating rib 196 that projects outwardly from inlet wall 182 in a manner to insure proper seating and ~alve align-ment. Rib 196 generally extends around the periphery of inlet wall 182.
Within outlet wall 184, a recess 200 is formed into its exterior surface so as to encircle opening 132. A resilient sealing element 200' is seated in recess 200 to form a seal.
Similarly, a second recess 202 is also formed into the exterior surface of outlet wall 184 so as to encircle spray openings 134.
Again a sealing element 202' is seated in recess 202. Thus, recess 202 encircles recess 200. Further included in the ex-terior surface of outlet wall 184 is a third recess 208 that at least generally encircles recess 200 and is disposed between recesses 200 and 202. The outlet end of conduit 142 opens into recess 208 so as to permit distribution of the by-pass flow to and through spray outlets 134.
In each embodiment, the unit is in the form of a hand-held water-discharge device that i9 capable of functioning exactly like the conventional vegetable spray attendant to so many kitchen sinks. Yet, by the simple operation of a push-button, it also serves to deliver purified water. The unit itself is so constructed as to be quite inexpensive. In ad~i-tion its active elemen~ for purification is in the form of a simple cartridge that also is inexpensive and readily replaceable.
One end result is that of a very simple and comparatively in-expensive unit that fully performs in the manner of predecessor devices that require significantly more space and expense. By having the actual outlets for either purified or by-passed water at a common site, the unit is enabled to be quite compact.
While particular embodiments of the invention have been shown and described, it will be obvious to those skilled in the art that changes and modifications may be made without departing from the invention in its broader aspects, and, therefore, the aim in the appended claims i8 to cover all such changes and modifications as fall within the true spirit and scope of the invention.
When greater sealing effect is desired, collar 96 may be formed to include a downwardly-depending boss that carries an external O-ring dimensioned to fit sealingly into opening 58. Still further, seal 66 may project from the outer perimeter of opening 58 so as to fit upwardly into the opening in collar 96.
The overall shape of the device in Figures 1-7 is par-ticularly attractive in that it closely resembles that of the conventional vegetable spray device ordinarily found in connection with many kitchen sinks. Yet, of course, it represents a signi-ficant improvement in that it also provides for selection of a stream of purified water. The conformation of the components is such as to enable a user very readily to replace cartridge 32 simply by unscrewing housing portion from 38, removing the expend-ed cartridge and substituting a new one.
Nevertheless, the embodiment of Figures 8-19 is presently preferred because it not only enables economy of construction but also provides for a filter cartridge conformation that has in-creased cost effectiveness. Water purifier 100 includes a hous-ing 102 that has an inlet 104 for admitting the flow of water and an outlet arrangement 106 for discharging a flow of water. A
channel 108 is defined through the housing so as to establish a path for the flow of water from inlet 104 to outlet arrangement 106. A chamber 110 is defined as part of channel 108 so as to receive a water-purifying cartridge 112 disposed in the path of water flow. A first valve 114 is disposed in channel 108 so as ~135633 to control the flow o~ water from inlet 104 to outlet 106 through cartridge 112. A second valve 116 is also disposed in channel 108 so as to control the flow of water from inlet 104 to outlet 106 but in a manner that is effective to by-pass cartridge 112.
Inlet 104 is formed to include a truncated seal seat 117 which extends to an internally-threaded bore that receives a coupling 118. A hose 119 is crimped by a band 120 into a pre-ferably nylon tube 121. A resilient C-washer 122 holds tube 121 so that band 120 is disposed within the bore of coupling 118. On the good upper end of.tu~e.l21 are a spacer washer 123 and a re-silient washer 124 held in place by a flange formed on the end of the tube. This entire coupling arrangement forms a swivel seal as conventionally used with a water hose of the type typically associated with the aforementioned vegetable spray. A similar approach is contemplated with respect to the embodiment of Figures 1-7.
In any event, the overall housing includes a first portion 126 which contains outlet arrangement 106 and valves 114 and 116 and a second portion 128 that depends downwardly from one end of portion 126 again as a handle dimensioned to be gripped by the human hand. Situated in association with portion 126 are valve operators 130 and 131 respectively for each of valves 116 and 114, the valve operators projecting from the end of portion 126 above the upper end of portion 128.
Included at the other end of housing portion 126 is a first opening 132 that is in communication with valve 114 and at least one additional opening 134 that is in communication with the other valve 116. As before, there preferably are a plurality of openings 134 ~paced individually apart so as collectively to encircle opening 132.
~135633 It will be observed t~at cartridge chamber 110 is, in this version, located downstream from valves 114 and 116.
Moreover, outlet openings 132 and 134 are formed in a cap 136 which closes one end of chamber 110. Cap 136 is threaded upon housin~ portion 126 ~o as both to secure the cap in place and seat cartridge 112 securely within chamber 110.
Chamber 110 and cartridge 112 together define a passage for the flow of water under control by valve 116 in by-pass of any action upon such flow of water by filter material 138 con-fined within cartridge 112. Again as before the filter materialpreferably is a granulate activated carbon mixed with a silver zeolite sandwiched be~ween fiberous sheets 140 and 140' of a material such ac felt. The by-passing is achieved by the in-clusion of a conduit 142 that runs entirely through cartridge 112.
Each of valves 114 and 116 includes a valve stem, re-spectively dominated by ~he numerals 144 and 146, that has one end, respectively 148 and 150, aligned to project within a corresponding hollow boss, respectively 152 and 154, that pro-jects outwardly from the inlet end of cartridge 112. A pair ofvalve guides, respectively 156 and 158, are formed in housing portion 126, with each of valves 114 and 116, and particularly their valve stems, being received in a corresponding one of valve guides 156 and 158. Of course, valve operators 130 and 131 . include a portion that is exposed to the exterior of the housing and each of which is affixed to one end of-the corresponding one of the valve stems. Each of valve guides 156 and 158 includes a locator seat, respectively 160 and 162, t~at is receptive of a corresponding one of hollow bosses 152 and 154 that project outwardly from the one end of cartridge 112. Moreover, each of 11;~5633 valve ~uides 156 and 158 receives an internal resilient seat, such as O-rings 164 and 168, for sealing cooperation with the corresponding valve stems. An external resilient seal 170, again an O-ring, seats each valve guide into the corresponding hollow boss. A snap ring 172 serves to provide retention against the spring force. A washer 174 is secured, as by sonic welding, to the inwardly projecting ends of the correspond-ing valve guides.
As particularly formed herein, valve operators 130 and 131 are complemented by an additional, but fixed, segment 176 that may well carry operating i~structions or other indicia.
Valve stems 144 and 146 are normally urged outwardly, to a water-path-closing condition, by compression springs 178 disposed between the respective ones of operators 130 and 131 and shoulders defined on respective valve guides 156 and 158. The end of hous-ing portion 126 adjacent to valve operators 130 and 131 is formed to include an outwardly projecting peripheral lip that seats both the valve operators and segment 176. Housing portion 128 is in the form of a cylindrical tube that is threadably secured at its upper end to housing portion 126 and sealed thereto by means of an O-ring 180.
The detailed construction of cartridge 112 is significant in its simplication of that which is necessary in the fabrication of the remainder of the purifier assembly. Thus, cartridge 112 includes an inlet wall 182 and an outlet wall 184. A locating rib 186 projects outwardly from outlet wall 184, extending at least generally around the periphery of that outlet wall. As before, internal spacing ribs 185 project inwardly from each end wall to hold the-active filter material in a spaced relationship in order to obtain a good flow profile. An apertured baffle plate 1~8 is spaced inwardly from inlet wall 182 and has recesR
190 to accommodate bosses 152 and 154. Baffle plate 188 and lateral openings 191 in boss 152 permit the flow of water de-flected by the baffle plate generally in the plane of inlet wall 182. It will be observed that bosses 152 and 154 also constitute recesses receptive of one end respective ones of valve stems 144 and 146 as well as the respective locator seats 160 and 162.
Moreover, bosses 152 and 154 also serve to position baffle plate 188 in slightly spaced relationship to inlet wall 182.
A portion 194 of conduit 142 is enlarged at its juncture with inlet wall 182. T~e degree of enlargement is sufficient so as to be receptive of valve stem 146. Boss 154, being dimen-sioned to constitute a recess that is receptive of one end of valve stem 146, tends to complete an overall structure that insures proper valve operation while yet not requiring specific structure in housing itself for that purpose. Cartridge 112 also includes a locating rib 196 that projects outwardly from inlet wall 182 in a manner to insure proper seating and ~alve align-ment. Rib 196 generally extends around the periphery of inlet wall 182.
Within outlet wall 184, a recess 200 is formed into its exterior surface so as to encircle opening 132. A resilient sealing element 200' is seated in recess 200 to form a seal.
Similarly, a second recess 202 is also formed into the exterior surface of outlet wall 184 so as to encircle spray openings 134.
Again a sealing element 202' is seated in recess 202. Thus, recess 202 encircles recess 200. Further included in the ex-terior surface of outlet wall 184 is a third recess 208 that at least generally encircles recess 200 and is disposed between recesses 200 and 202. The outlet end of conduit 142 opens into recess 208 so as to permit distribution of the by-pass flow to and through spray outlets 134.
In each embodiment, the unit is in the form of a hand-held water-discharge device that i9 capable of functioning exactly like the conventional vegetable spray attendant to so many kitchen sinks. Yet, by the simple operation of a push-button, it also serves to deliver purified water. The unit itself is so constructed as to be quite inexpensive. In ad~i-tion its active elemen~ for purification is in the form of a simple cartridge that also is inexpensive and readily replaceable.
One end result is that of a very simple and comparatively in-expensive unit that fully performs in the manner of predecessor devices that require significantly more space and expense. By having the actual outlets for either purified or by-passed water at a common site, the unit is enabled to be quite compact.
While particular embodiments of the invention have been shown and described, it will be obvious to those skilled in the art that changes and modifications may be made without departing from the invention in its broader aspects, and, therefore, the aim in the appended claims i8 to cover all such changes and modifications as fall within the true spirit and scope of the invention.
Claims (24)
1. A water purifying device for operation with a water purifying cartridge said device including:
a housing having a water inlet and a water outlet, valve means for controlling flow between said inlet and said outlet, and a chamber for receiving the cartridge, the housing further including means for conveying water from the inlet to said outlet along a filtering path including the cartridge when received in said chamber and for conveying water along a bypass path bypassing the cartridge, said valve means being manually actuable from the outside of the housing to control the passage of water along the filtering and bypass paths.
a housing having a water inlet and a water outlet, valve means for controlling flow between said inlet and said outlet, and a chamber for receiving the cartridge, the housing further including means for conveying water from the inlet to said outlet along a filtering path including the cartridge when received in said chamber and for conveying water along a bypass path bypassing the cartridge, said valve means being manually actuable from the outside of the housing to control the passage of water along the filtering and bypass paths.
2. A water purifying device, for operation with a water purifying cartridge, which has a water inlet, a housing including valve means selectively operable to allow purified or unpurified water to exit the housing through respective, spaced-apart water exit openings in a first portion of the housing, a second portion of the housing being releasably connected to the first portion thereof and having a chamber for receiving the cartridge, the housing further including means for conveying water from the inlet (i) to a first of the exit openings along a filtering path including the cartridge when received in the chamber and (ii) to a second of the exit openings along a path bypassing the cartridge, the said valve means being manually actuable from the outside of the housing to control the passage of water along the filtering and bypass paths.
3. A water purifying device as claimed in claim 2, wherein the first and second portions are threaded to each other.
4. A water purifying device as claimed in claim 2 or 3, wherein the second portion of the housing is dimensioned to be grippable by a human hand.
5. A water purifying device as claimed in claim 2, wherein the second portion is a handle and the water purifying device is manually portable via said handle.
6. A water purifying device as claimed in claim 5, wherein the handle is detachable from the first portion of the housing.
7. A water purifying device as claimed in claim 6, wherein the handle is releasably connected to the first portion of the housing by a threaded coupling.
8. A water purifying device as claimed in claim 5, 6 or 7 wherein the bypass path extends inside the handle.
9. A water purifying device as claimed in claim 2, wherein one of the exit openings comprises a plurality of apertures that encircle another exit opening.
10. A water purifying device as claimed in claim 2, wherein the valve means has a manual push-button actuator.
11. A water purifying device as claimed in claim 10, wherein the said actuator projects from an end of the first portion.
12. A water purifying device as claimed in claim 1, wherein the valve means include a first valve for controllably passing water exclusively through the said filtering path and a second valve for controllably passing water exclusively along the said bypass path.
13. A water purifying device as claimed in claim 12, wherein the first valve has a first manually operable valve actuator and the second valve has a second manually operable valve actuator.
14. A water purifying device as claimed in claim 13, wherein the first and second manually operable valve actuators are of a push-button type.
l5. A water purifying device as claimed in claim 1, wherein the valve means are located downstream of the said chamber.
16. A water purifying device as claimed in claim 1, wherein a valve guide is formed in the housing and the valve means include a valve stem received in the valve guide.
17. A water purifying device as claimed in claim 2, wherein the said bypass path is defined by a space between the interior of the second portion and the exterior of said cartridge when received in the chamber.
18. A water purifying device as claimed in claim 2, wherein a wall of said first portion has spaced apart first and second apertures respectively for conducting towards the said first and second exit openings unfiltered water received from the said water inlet, and filtered water received from the cartridge when located in said chamber.
.
.
19. A water purifying device as claimed in claim 2, wherein a wall of said first portion has an aperture located in said filtering path for conducting filtered water from said cartridge towards the first opening.
20. A water purifying device as claimed in claim 19, including sealing means encircling the said aperture to form a seal between the first portion and the cartridge when located in said chamber.
21. An internally by-passable water purifier comprising a housing;
inlet means in said housing for admitting a flow of water;
outlet means in said housing for discharging a flow of water from said housing;
channel means in said housing defining a path for the flow of water from said inlet means to said outlet means;
a filter-material-containing water purifying cartridge;
a chamber defined in said channel means for receiving said cartridge in the path of said flow;
means including a first valve disposed in said channel means for controlling the flow of water from said inlet means through said cartridge to said outlet means;
means including a second valve disposed in said channel means for controlling the flow of water from said inlet means to said outlet means in exclusive by-pass of said filter material;
said housing including a first portion containing said outlet means and said valves and a second portion downwardly depend-ing from one end of said first portion as a handle dimensioned to be gripped by the human hand;
said outlet means being formed in the other end of said first portion; and a manually operable valve operator for each of said first and second valves and projection from said one end of said first portion above the upper end of said second portion.
inlet means in said housing for admitting a flow of water;
outlet means in said housing for discharging a flow of water from said housing;
channel means in said housing defining a path for the flow of water from said inlet means to said outlet means;
a filter-material-containing water purifying cartridge;
a chamber defined in said channel means for receiving said cartridge in the path of said flow;
means including a first valve disposed in said channel means for controlling the flow of water from said inlet means through said cartridge to said outlet means;
means including a second valve disposed in said channel means for controlling the flow of water from said inlet means to said outlet means in exclusive by-pass of said filter material;
said housing including a first portion containing said outlet means and said valves and a second portion downwardly depend-ing from one end of said first portion as a handle dimensioned to be gripped by the human hand;
said outlet means being formed in the other end of said first portion; and a manually operable valve operator for each of said first and second valves and projection from said one end of said first portion above the upper end of said second portion.
22. An internally by-passable water purifier comprising:
a housing;
inlet means in said housing for admitting a flow of water;
outlet means in said housing for discharging a flow of water from said housing;
channel means in said housing defining a path for the flow of water from said inlet means to said outlet means;
a filter-material-containing water-purifying cartridge;
a chamber defined in said channel means for receiving said cartridge in the path of said flow;
means including a first valve disposed in said channel means for controlling the flow of water from said inlet means through said cartridge to said outlet means;
means including a second valve disposed in said channel means for controlling the flow of water from said inlet means to said outlet means in exclusive by-pass of said filter material;
a pair of valve guides formed in said housing;
each of said valves including a valve stem received in a corresponding one of said valve guides; and a manually operable valve operator having a portion exposed to the exterior of said housing that is affixed to one end of each corresponding one of said valve stems.
a housing;
inlet means in said housing for admitting a flow of water;
outlet means in said housing for discharging a flow of water from said housing;
channel means in said housing defining a path for the flow of water from said inlet means to said outlet means;
a filter-material-containing water-purifying cartridge;
a chamber defined in said channel means for receiving said cartridge in the path of said flow;
means including a first valve disposed in said channel means for controlling the flow of water from said inlet means through said cartridge to said outlet means;
means including a second valve disposed in said channel means for controlling the flow of water from said inlet means to said outlet means in exclusive by-pass of said filter material;
a pair of valve guides formed in said housing;
each of said valves including a valve stem received in a corresponding one of said valve guides; and a manually operable valve operator having a portion exposed to the exterior of said housing that is affixed to one end of each corresponding one of said valve stems.
23. A water purifier as defined in claim 22 in which each of said valve guides includes a locator seat receptive of a corres-ponding hollow boss projecting outwardly from one end of said cartridge.
24. A water purifier as defined in claim 23 in which each of said valve guides includes an external resilient seal for co-operation with the corresponding boss and an internal resilient seal for co-operation with the corresponding valve stem.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CA000362830A CA1135633A (en) | 1975-09-29 | 1980-10-20 | Water purifier |
Applications Claiming Priority (4)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| US61744975A | 1975-09-29 | 1975-09-29 | |
| US617,449 | 1975-09-29 | ||
| CA261,930A CA1097228A (en) | 1975-09-29 | 1976-09-23 | Water purifier with bypass |
| CA000362830A CA1135633A (en) | 1975-09-29 | 1980-10-20 | Water purifier |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CA1135633A true CA1135633A (en) | 1982-11-16 |
Family
ID=27164663
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CA000362830A Expired CA1135633A (en) | 1975-09-29 | 1980-10-20 | Water purifier |
Country Status (1)
| Country | Link |
|---|---|
| CA (1) | CA1135633A (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110403469A (en) * | 2019-07-16 | 2019-11-05 | 佛山市顺德区美的洗涤电器制造有限公司 | Purifying drinking appliance |
-
1980
- 1980-10-20 CA CA000362830A patent/CA1135633A/en not_active Expired
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110403469A (en) * | 2019-07-16 | 2019-11-05 | 佛山市顺德区美的洗涤电器制造有限公司 | Purifying drinking appliance |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| US4107046A (en) | Water purifier | |
| US4172796A (en) | Water purifier apparatus | |
| US5057214A (en) | Filtration and backwash control system for water filters associated with spigot faucets | |
| AU637725B2 (en) | Tap water purifier to be directly coupled to faucet pipe | |
| US4713175A (en) | Water purifier comprising stages mounted side-by-side to unitary header | |
| US5071551A (en) | Water purifier | |
| US5549822A (en) | Shower filter apparatus | |
| US4147631A (en) | Water control and distribution apparatus | |
| US6193884B1 (en) | Dripless purification manifold and cartridge | |
| AU668755B2 (en) | Faucet diverter valve | |
| US3342340A (en) | Water conditioning apparatus | |
| US5078876A (en) | Apparatus for multistage purification of water | |
| US3469696A (en) | Filtration apparatus | |
| US20020036162A1 (en) | Appliance with iodinated water source | |
| US20050145554A1 (en) | Multiple flow sink counter-top water sprayer and filter system | |
| US6258266B1 (en) | Faucet mount water filtration device | |
| EP0132762B1 (en) | A filter for purifying drinkable and non-drinkable water | |
| US5107896A (en) | Multi-functional valve | |
| US3705651A (en) | Filter system employing activated carbon, porous material and diatomaceous earth | |
| CA1135633A (en) | Water purifier | |
| AU644053B2 (en) | Water purifier attachable to a faucet, and a holder and cartridge for use therein | |
| JP2777579B2 (en) | Faucet water purifier | |
| JP3236640B2 (en) | Water purifier | |
| KR200297476Y1 (en) | Unity filter apparatus for cooler, water heater | |
| JP3210709B2 (en) | Water purifier |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| MKEX | Expiry |