The patent badge is an abbreviated version of the USPTO patent document. The patent badge does contain a link to the full patent document.
The patent badge is an abbreviated version of the USPTO patent document. The patent badge covers the following: Patent number, Date patent was issued, Date patent was filed, Title of the patent, Applicant, Inventor, Assignee, Attorney firm, Primary examiner, Assistant examiner, CPCs, and Abstract. The patent badge does contain a link to the full patent document (in Adobe Acrobat format, aka pdf). To download or print any patent click here.
Patent No.:
Date of Patent:
Jan. 27, 2004
Filed:
Apr. 01, 2002
Gary D. Bierend, Canyon Country, CA (US);
Paul H. Nicholas, Glendale, CA (US);
Other;
Abstract
A water flow control valve ( ) designed to be installed externally on a toilet tank ( ) or as an integral element of a toilet ballcock ( ). The valve ( ) incorporates a diaphragm ( ), a spring ( ), a poppet assembly ( ), and an inlet port ( ) that is connected to a utility water supply ( ) and an outlet port ( ) that is connected through a pipe ( ) to a fitting ( ) on the the toilet tank ( ). The valve functions by sensing the pressure at the inlet port ( ). When no large demands are placed on the water supply ( ), the valve ( ) remains open, thus allowing the toilet tank ( ) to fill. When a shower is turned on, the water pressure drops which reduces the upward force on the diaphragm ( ), thus allowing the spring ( ) to place the poppet ( ) in a closed position which prevents the toilet tank ( ) from filling. When the water demand ceases, the water pressure opens the valve ( ), which allows the toilet tank ( ) to fill.