Patent US4235703A successfully refreshed from Google Patents.
Patent US3554219A successfully refreshed from Google Patents.
US3554219A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Toilet tank supply valve assembly
Assignee: Twentieth Century Cos Inc
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Filing: 1968-02-01
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Granted: 1971-01-12
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Expires: 1988-02-01
Abstract
Abstract A float is supported on a normally upright casing for rising and falling therealong. A housing on the casing above the float contains a pressure chamber defined in part by a control valve movable to interrupt communication between an inlet supply conduit and a tank filling outlet. The chamber is subject to inlet pressure at all times and the control valve remains closed until the chamber pressure is relieved by opening a bleed passage from the chamber. A valve control member is mounted for swiveling movement in opposite directions about the casing and in a direction canting a bleed valve to open the bleed passage in response to falling movement of the float to which it is connected by linkage, the linkage and the float being movable with the valve control member about the casing.
Inventors
- 👤 Harry W Hudson
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-30 23:31
CPC Classifications
E; E03; E03D; E03D1/00; E03D1/30; E03D1/32; Y; Y10; Y10T; Y10T137/00; Y10T137/7287; Y10T137/7358; Y10T137/7368; Y10T137/7371; Y10T137/7374; Y10T137/7423; Y10T137/7426; Y10T137/7433
Claims Analysis
Total Claims: 13
Claim 1
Independent Claim
342 words
A toilet tank supply valve assembly comprising a normally upright casing, a float supported on said casing for rising and falling movement therealong in response to predetermined changes in the water level in an associated tank, a water inlet passage to said casing, a water outlet passage from said casing, a housing on said casing adjacent the upper end thereof above said float, means including a first valve defining a pressure chamber in said housing and in communication with said inlet passage, said first valve being movable by the pressure of water in said chamber to control communication between said inlet and outlet passages, a bleed passage from said chamber, a second valve normally closing said bleed passage, a valve control member mounted for swiveling movement in opposite directions about the axis of said casing and in a direction canting said second valve to open said bleed passage and cause movement of said first valve to a position placing said inlet and outlet passages in communication, means connecting said float to said valve control member for moving the latter to open said bleed passage in response to falling movement of said float, said last-named means and said float being movable with said valve control member in opposite directions about the axis of said casing, means on said housing including an upstanding wall providing an upwardly opening channel encircling said chamber below said bleed passage, a bowl filling conduit communicating with said inlet passage when said first valve is in a position placing said inlet and outlet passages in communication, said bowl filling conduit also communicating with said channel whereby water escaping through said bleed passage is diverted by said channel to said bowl filling conduit, said valve control member comprising a disc having a depending annular skirt aligned with said channel in overlapped relation to said upstanding wall in all positions of said valve control member, and means positioned radially within said skirt of said valve control member providing a pivot for rocking said control member upon falling movement of said float.
Claim 2
Dependent Claim
342 words
A toilet tank supply valve assembly comprising a normally upright casing, a float supported on said casing for rising and falling movement therealong in response to predetermined changes in the water level in an associated tank, a water inlet passage to said casing, a water outlet passage from said casing, a housing on said casing adjacent the upper end thereof above said float, means including a first valve defining a pressure chamber in said housing and in communication with said inlet passage, said first valve being movable by the pressure of water in said chamber to control communication between said inlet and outlet passages, a bleed passage from said chamber, a second valve normally closing said bleed passage, a valve control member mounted for swiveling movement in opposite directions about the axis of said casing and in a direction canting said second valve to open said bleed passage and cause movement of said first valve to a position placing said inlet and outlet passages in communication, means connecting said float to said valve control member for moving the latter to open said bleed passage in response to falling movement of said float, said last-named means and said float being movable with said valve control member in opposite directions about the axis of said casing, means on said housing including an upstanding wall providing an upwardly opening channel encircling said chamber below said bleed passage, a bowl filling conduit communicating with said inlet passage when said first valve is in a position placing said inlet and outlet passages in communication, said bowl filling conduit also communicating with said channel whereby water escaping through said bleed passage is diverted by said channel to said bowl filling conduit, said valve control member comprising a disc having a depending annular skirt aligned with said channel in overlapped relation to said upstanding wall in all positions of said valve control member, and means positioned radially within said skirt of said valve control member providing a pivot for rocking said control member upon falling movement of said float.
Claim 3
Dependent Claim
46 words
A supply valve assembly as in claim 1, wherein said means connecting said float to said valve control member comprises a link pivotably connected to said float and to said valve control member for rocking the latter in response to rising and falling of the former.
Claim 4
Dependent Claim
58 words
A supply valve assembly as set forth in claim 1, wherein bleed passage opens upwardly through said housing, said second valve being in said chamber and having a stem extending through said bleed passage and connected to said valve control member, said second valve and stem comprising a swivel mounting for said valve control member on said housing.
Claim 5
Dependent Claim
66 words
A supply valve assembly as set forth in claim 1, wherein said bleed passage is aligned with said casing axis, and wherein said means providing a pivot comprises means on said housing providing an external bearing surface around said bleed passage, and means on said valve control member providing a fulcrum engaging said bearing surface for canting said second valve upon falling movement of said float.
Claim 6
Dependent Claim
44 words
A supply valve assembly as set forth in claim 1, wherein said float includes a meter chamber portion and an air chamber portion arranged for relative movement lengthwise of said casing thereby to vary the level of water normally maintained in an associated tank.
Claim 7
Dependent Claim
70 words
A supply valve assembly as set forth in claim 1, wherein said casing includes inner and outer generally concentric tubular sections, said inlet passage extending thRough said inner section from the lower end of said casing, said tank filling outlet passage extending between said inner and outer sections from said upper end of said casing and having an outlet from said outer section adjacent said lower end of said casing.
Claim 8
Dependent Claim
40 words
A supply valve assembly as set forth in claim 6, together with an air inlet opening through said outer casing section adjacent said housing and above said float, whereby said tank tilling passage, at all times, is open to atmosphere.
Claim 9
Dependent Claim
85 words
A supply valve assembly as set forth in claim 7, together with transfer passage means from said first valve to said tank filling outlet passage, one-way valve means normally closing said water passage means and opening to permit the passage of water therethrough into said outlet passage, said outer casing section having a laterally outwardly directed flange adjacent said upper end of said casing, said air inlet opening being located in said flange laterally outwardly of said transfer passage means and being generally downwardly directed.
Claim 10
Dependent Claim
50 words
A supply valve assembly as set forth in claim 8, wherein said one-way valve means comprise an annular diaphragm having a fixed outer edge portion and an inner edge portion underlying said transfer passage means, said inner edge portion being operable to divert water away from said air inlet opening.
Claim 11
Dependent Claim
26 words
A supply valve assembly as defined in claim 6, together with pressure reducing means in said inner casing section adjacent the lower end of said casing.
Claim 12
Dependent Claim
73 words
A supply valve assembly as set forth in claim 10, together with a strainer carried by said inner casing section adjacent the upper end of said casing, and a resiliently yieldable tube extending within said inner casing section and providing a pneumatic cushion therein, said tube being secured adjacent its upper end to said strainer and said pressure reducing means comprising a regulator member carried by said tube adjacent the lower end thereof.
Claim 13
Dependent Claim
127 words
A supply valve assembly as set forth in claim 1 wherein said first valve is movable to a closed position closing off said outlet passage from said inlet passage, a pressure equalizing passage placing said chamber in communication with said inlet passage whereby said chamber is subject to inlet pressure when said first valve is in said closed position, said first valve normally being held in said closed position by the pressure of water in said chamber, and said pressure equalizing passage being restricted relative to said bleed passage whereby opening of the latter relieves the pressure in said chamber for movement of said first valve out of said closed position and into the position placing said tank filling outlet passage in communication with said inlet passage.
References Cited (Backward Citations)
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1974-01-11 | 1974-07-13 | 1975-01-12 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1978-01-11 | 1978-07-13 | 1979-01-12 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1982-01-11 | 1982-07-13 | 1983-01-12 | $7700.00 | Window Closed / Lapsed |