Automatic tank-type flusher
AssigneeArichell Technologies, Inc.
InventorsNatan E. Parsons, David W. Hadley
Life of this patent
Estimating the term…
Abstract
Pressure from the input water line (26) holds a toilet's flush-valve member (12) in its seat so as to prevent water in the toilet tank (16) from flowing through flush ports (18) and a flush conduit (22) into the toilet bowl or urinal. To release water through the flush conduit (22) a solenoid (42) is actuated to relieve the pressure acting on the flush-valve (12) so that a bias spring (24) lifts the flush-valve (12) off its seat (14). A solenoid (118) for performing this function can be located remotely from the flush-valve assembly and communicate with it by a hydraulic line (108).
Claims9
A flusher comprising:
- A) a tank forming a flush outlet by which liquid in the tank may leave the tank for flushing;
- B) a flush-valve member biased to an unseated state, in which it permits flow from the tank through the flush outlet, and operable between its unseated state and a seated state, in which it prevents flow from the tank therethrough;
- C) a flush-valve housing that forms a flush-valve chamber in which at least a portion of the flush-valve member is movably disposed, the flush-valve housing further forming a flush-valve chamber pressure-relief outlet and a line-pressure inlet that so admits water line pressure into the flush-valve chamber as to keep the valve in its seated state when water line pressure above a minimum hold pressure prevails in the flush-valve chamber;
- and
- D) a pressure-relief mechanism operable between a closed state, in which it prevents relief of flush-valve-chamber pressure through the flush-valve chamber pressure-relief outlet, and an open state, in which it relieves flush-valve-chamber pressure through the flush-valve chamber pressure-relief outlet.
Dependencies are inferred from the claim text.