Dual flush refill device

Baths – closets – sinks – and spittoons – Flush closet – Manual selection of the amount of flush

Reexamination Certificate

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C004S324000, C004S410000

Reexamination Certificate

active

07900290

ABSTRACT:
A dual flush refill device refills a bowl of a siphonic toilet with adequate supply of refill water in response to either a full or partial flush without wasting the refill water. The device provides a relatively high flow rate of refill water from a refill tube to an overflow tube in response to a partial flush, and a relatively low rate of refill water from the refill tube to the overflow tube in response to a full flush. As a result, the toilet bowl is refilled with a substantially similar volume of refill water regardless of which flush option is selected.

REFERENCES:
patent: 4042982 (1977-08-01), Contreras
patent: 4144600 (1979-03-01), Mayes
patent: 4189795 (1980-02-01), Conti et al.
patent: 4497076 (1985-02-01), Sullivan
patent: 5584080 (1996-12-01), Nichols-Roy et al.
patent: 5647068 (1997-07-01), Jensen
patent: 6604249 (2003-08-01), Han et al.
International Search Report and Written Opinion of the International Searching Authority, Aug. 8, 2007.

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