US3790968A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Flush valve device for toilets
Assignee: Individual
•
Filing: 1972-05-03
•
Granted: 1974-02-12
•
Expires: 1992-05-03
Abstract
Abstract A pair of laterally spaced float members are supported on the lifting rod or valve stem at an adjusted or preferred elevation above a nonbuoyant and weighted valve member threadedly attached to the lower end of the rod or stem. The lower threaded end of the stem is angled at 7 and the valve member has a threaded recess therein also angled at 7. Owing to the square cross section of the valve stem and a complementally configured guide affixed to the overflow pipe in the toilet tank, the valve member will operate in conjunction with either a flat or slanted valve seat. Smaller seats can also be accommodated by merely selecting an intermediate angular position of the valve member on the valve stem. An indicator pin on the stem and angularly disposed indicia in the form of small bumps enable the user to readily select the proper angular position of the valve member for the particular type of valve seat.
Inventors
- 👤 P Pfeifer
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-07 15:59
CPC Classifications
E; E03; E03D; E03D1/00; E03D1/30; E03D1/34; E03D1/006
Claims Analysis
Total Claims: 15
Claim 1
Independent Claim
134 words
A flush valve device for toilets comprising an elongated valve stem, a nonbuoyant valve member attached to the lower end of said stem, said valve member being concavo-convex with the concave side facing upwardly, float means, support means for holding said float means at a location above said valve member, means for adjusting the height of said support means on said stem so as to determine the location of said float means with respect to said valve member, and guide means for attachment to the overflow pipe of the water closet in which the device is to be installed, said guide means having a noncircular passage extending vertically therethrough and said valve stem having a noncircular cross section corresponding to that of said noncircular passage so that rotation of said valve stem is prevented.
Claim 2
Dependent Claim
134 words
A flush valve device for toilets comprising an elongated valve stem, a nonbuoyant valve member attached to the lower end of said stem, said valve member being concavo-convex with the concave side facing upwardly, float means, support means for holding said float means at a location above said valve member, means for adjusting the height of said support means on said stem so as to determine the location of said float means with respect to said valve member, and guide means for attachment to the overflow pipe of the water closet in which the device is to be installed, said guide means having a noncircular passage extending vertically therethrough and said valve stem having a noncircular cross section corresponding to that of said noncircular passage so that rotation of said valve stem is prevented.
Claim 3
Dependent Claim
47 words
A flush valve device in accordance with claim 1 in which the lower end of said valve stem is threaded and the concave side of said valve member has an internally threaded boss for receiving said threaded end to attach said valve member to said valve stem.
Claim 4
Dependent Claim
29 words
A flush valve device in accordance with claim 2 in which said threaded end extends downwardly at an acute angle with respect to the longitudinal axis of said stem.
Claim 5
Dependent Claim
61 words
A flush valve device in accordance with claim 3 in which said boss recess extends at an acute angle with respect to a vertical axis through said valve member so that the angular posiTion of said valve member on the threaded end of said shank determines the angle of said valve member with respect to the longitudinal axis of said stem.
Claim 6
Dependent Claim
67 words
A flush valve device in accordance with claim 4 in which said passage through said guide means has a square configuration and the cross section of said stem is also square, said valve stem having an indicating pin extending from one side thereof whereby a selected rib can be angularly aligned with said pin to indicate the degree of angularity of said valve member relative said stem.
Claim 7
Dependent Claim
40 words
A flush valve device in accordance with claim 5 in which certain of said ribs have marks thereon so as to denote the proper degree of angularity of said valve member with respect to the longitudinal axis of said stem.
Claim 8
Dependent Claim
53 words
A flush valve device in accordance with claim 1 in which said support means is U-shaped to provide arms extending laterally in opposite directions and said guide means extends at right angles to the direction in which said arms extend to thereby obviate any interference between said guide means and said float members.
Claim 9
Dependent Claim
64 words
A flush valve device in accordance with claim 1 in which said guide means includes upper and lower members having vertically aligned square openings to form said vertical passage, and said upper and lower members are formed with notches which form additional openings communicating with said vertical passage to wash away scale that might otherwise collect within said passage and on said valve stem.
Claim 10
Dependent Claim
21 words
A flush valve device in accordance with claim 8 including a pair of downwardly projecting guide fingers on said lower member.
Claim 11
Dependent Claim
38 words
A flush valve device in accordance with claim 8 including a clamp having a pair of horizontal fingers, said upper and lower members each having a groove which together form a passage for receiving said horizontal fingers therein.
Claim 12
Dependent Claim
72 words
A flush valve device in accordance with claim 10 in which said horizontal fingers have a vertical slot therebetween and said upper and lower members form a horizontal slot, and a screw extending downwardly through said upper member, and through said vertical slot into threaded engagement with said lower member for tightening said upper and lower members against said horizontal fingers to hold said upper and lower members in a preferred position.
Claim 13
Dependent Claim
133 words
A flush valve device for toilets comprising an elongated valve stem, a nonbuoyant, concavo-convex valve member attached to the lower end of said stem with the concave side thereof facing upwardly, float means, support means for holding said float means at a location above said valve member, means for adjusting the height of said support means on said stem so as to determine the location of said float means with respect to said valve member, said valve member being of plastic material, a weight member carried on said valve member, said valve member being formed with radially directed ribs on its concave side and including an upstanding cylindrical lip extending around the free ends of said ribs, and a second upstanding cylindrical lip extending circumferentially around the outer periphery of said valve member.
Claim 14
Dependent Claim
133 words
A flush valve device for toilets comprising an elongated valve stem, a nonbuoyant, concavo-convex valve member attached to the lower end of said stem with the concave side thereof facing upwardly, float means, support means for holding said float means at a location above said valve member, means for adjusting the height of said support means on said stem so as to determine the location of said float means with respect to said valve member, said valve member being of plastic material, a weight member carried on said valve member, said valve member being formed with radially directed ribs on its concave side and including an upstanding cylindrical lip extending around the free ends of said ribs, and a second upstanding cylindrical lip extending circumferentially around the outer periphery of said valve member.
Claim 15
Dependent Claim
16 words
A flush valve device in accordance with claim 12 in which said valve member is polyethylene.
References Cited (Backward Citations)
US2241220A
Cited
US2532977A
Cited
US2674744A
Cited
US2773268A
Cited
US3036313A
Cited
US3561016A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1977-02-11 | 1977-08-13 | 1978-02-12 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1981-02-11 | 1981-08-13 | 1982-02-12 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1985-02-11 | 1985-08-13 | 1986-02-12 | $7700.00 | Window Closed / Lapsed |