Baths – closets – sinks – and spittoons – Flush closet – Manual selection of the amount of flush
Patent
1990-04-09
1991-12-31
Sholl, Linda J.
Baths, closets, sinks, and spittoons
Flush closet
Manual selection of the amount of flush
4415, E03D 114
Patent
active
050759078
ABSTRACT:
A flush tank water saver has an elongated semi-circular base fitting around and clamped to the overflow pipe. This base carries an operating lever on pivots close to the flapper valve pivots. This lever engages the flapper valve at its center and pushes it in exactly the direction it is going, eliminating friction losses. The lever is operated to push the valve closed by a float mounted on the other side of the overflow pipe on a vertical guide. The float operates a float lever connected to the valve operator. A stop for the float is brought into place by the flush lever. If the user holds the flush handle down for two seconds the float engages the stop and is inoperative for that flush. This provides a full flush. In the second species the valve operating lever pivot is near the water saver cut-off level and the lever is spring biased downwardly behind the flapper valve to push it closed. It is moved to valve open position by the flush lever at the start of a flush and held there by a latch which is released by a float at the water saver cut-off level. The valve pivot is located horizontally to cause the points of contact between the valve operator and flapper valve to travel in the same general direction, minimizing friction loss.
REFERENCES:
patent: 823832 (1906-06-01), Wayman
patent: 2532977 (1950-12-01), White
patent: 4017912 (1972-04-01), Young, Jr.
patent: 4032997 (1975-09-01), Phripp et al.
patent: 4483024 (1984-11-01), Troch
patent: 4651359 (1987-03-01), Battle
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