Patent US4922556A successfully refreshed from Google Patents.
US4922556A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Flushing means
Assignee: Individual
•
Filing: 1989-04-17
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Granted: 1990-05-08
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Expires: 2009-04-17
Abstract
Abstract An improved flushing means is disclosed for use in water tanks such as are for flushing toilets. The flushing means has a water inlet with an improved two-stage valve using inlet line pressure for operating the two stages. A float is movably mounted on the inlet for controlling the valve with a lever operatively coupling the float to the first stage of the valve. A cooperating vertical hollow and floating overflow tube including an adjustable bowl filling siphon controls the tank discharge to the bowl. These improvements to the tank discharge to the bowl are also to be incorporated into the commonly used flapper-type flush valve.
Inventors
- 👤 Vernon D. Roosa
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-08 09:33
CPC Classifications
E; E03; E03D; E03D1/00; E03D1/30; E03D1/32; Y; Y10; Y10T; Y10T137/00; Y10T137/7287; Y10T137/7358; Y10T137/7413
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
135 words
In combination with a tank filling inlet valve, an improved flushing valve for sealing a flush tank outlet to a bowl comprising the combination of: a stationary hollow tube; means for mounting said hollow tube in a generally vertical position in said tank at a tank outlet; aperture means on said hollow tube for admitting liquid to said hollow tube from said tank for bowl leveling, a movably mounted flapper valve spaced from said hollow tube for sealing a tank outlet, a member attached to a handle for lifting said flappe valve from a tank outlet, float means adjustably positioned on said member, said aperture means comprising a plurality of hole sites at this level with plug means in all except a preselected one whereby liquid is admitted in only said one preselected hole site.
Claim 2
Dependent Claim
135 words
In combination with a tank filling inlet valve, an improved flushing valve for sealing a flush tank outlet to a bowl comprising the combination of: a stationary hollow tube; means for mounting said hollow tube in a generally vertical position in said tank at a tank outlet; aperture means on said hollow tube for admitting liquid to said hollow tube from said tank for bowl leveling, a movably mounted flapper valve spaced from said hollow tube for sealing a tank outlet, a member attached to a handle for lifting said flappe valve from a tank outlet, float means adjustably positioned on said member, said aperture means comprising a plurality of hole sites at this level with plug means in all except a preselected one whereby liquid is admitted in only said one preselected hole site.
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USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1993-05-07 | 1993-11-06 | 1994-05-08 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1997-05-07 | 1997-11-06 | 1998-05-08 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 2001-05-07 | 2001-11-06 | 2002-05-08 | $7700.00 | Window Closed / Lapsed |