US4202525A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Water control device for flush valves
Assignee: CHEMWORLD CORP
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Filing: 1978-02-06
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Granted: 1980-05-13
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Expires: 1998-02-06
Abstract
Abstract A flush valve having a diaphragm type main valve and a relief valve located between the main valve and a cover member and a ring shaped water control device located between the relief valve and the cover member to shorten the flush cycle and greatly reduce the total volume of water flow through the main valve during flushing.
Inventors
- 👤 Louis E. Govaer
- 👤 James E. Hobbs
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-30 19:09
CPC Classifications
E; E03; E03D; E03D3/00; E03D3/02; E03D3/06
Claims Analysis
Total Claims: 9
Claim 1
Independent Claim
154 words
In a flush valve having inlet and outlet water passages: an upstanding barrel portion in said flush valve having a main valve seat around the top end thereof, a flexible diaphragm having a central opening therein surrounded by a main valve seating portion, a cylindrical hollow guide member depending from said diaphragm and extending through said barrel portion, a relief valve seatable across the diaphragm opening and having an operating stem depending through said guide member, an internal cover member positioned above said relief valve and spaced therefrom, means for operating said relief valve to cause said diaphragm to open from said main valve seat and permit water flow through said flush valve, and free floating water control means positioned immediately above said relief valve and in between said relief valve and said cover member whereby the height to which the relief valve can rise is reduced and the water flow cycle is shortened.
Claim 2
Dependent Claim
154 words
In a flush valve having inlet and outlet water passages: an upstanding barrel portion in said flush valve having a main valve seat around the top end thereof, a flexible diaphragm having a central opening therein surrounded by a main valve seating portion, a cylindrical hollow guide member depending from said diaphragm and extending through said barrel portion, a relief valve seatable across the diaphragm opening and having an operating stem depending through said guide member, an internal cover member positioned above said relief valve and spaced therefrom, means for operating said relief valve to cause said diaphragm to open from said main valve seat and permit water flow through said flush valve, and free floating water control means positioned immediately above said relief valve and in between said relief valve and said cover member whereby the height to which the relief valve can rise is reduced and the water flow cycle is shortened.
Claim 3
Dependent Claim
48 words
A flush valve as set forth in claim 1 wherein said water control means positioned immediately above said relief valve is generally ring shaped having a series of spoked projections about the outer periphery thereof, and a series of notched out portions between each of said spoked projections.
Claim 4
Dependent Claim
43 words
A flush valve as set forth in claim 2 wherein said ring shaped water control device is provided with a series of knobs on the inner periphery thereof and located on the side of said ring which is adjacent the internal cover member.
Claim 5
Dependent Claim
19 words
A flush valve as set forth in claim 3 wherein said knobs are in the form of solid discs.
Claim 6
Dependent Claim
16 words
A flush valve as set forth in claim 2 having at least one interior support member.
Claim 7
Dependent Claim
24 words
A flush valve as set forth in claim 3 wherein the height of the knobs can vary depending upon the pressure of the water.
Claim 8
Dependent Claim
43 words
A flush valve as set forth in claim 1 wherein said water control means is generally ring shaped and has a series of smooth, rounded, scalloped projections about the outer periphery thereof, and wherein each scalloped projection is provided with an opening therethrough.
Claim 9
Dependent Claim
16 words
A flush valve as set forth in claim 5 having at least one interior support member.
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) | 1983-05-13 | 1983-11-12 | 1984-05-13 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1987-05-13 | 1987-11-12 | 1988-05-13 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1991-05-13 | 1991-11-12 | 1992-05-13 | $7700.00 | Window Closed / Lapsed |