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:
Jul. 05, 2005
Filed:
Oct. 23, 2003
Richard A. Nortier, Westchester, IL (US);
Richard A. Nortier, Westchester, IL (US);
Sloan Valve Company, Franklin Park, IL (US);
Abstract
A flush valve includes a body having an inlet, an outlet and a main seat assembly between the inlet and outlet. A piston moves within the body and with the body defines a pressure chamber which is used to normally maintain the piston closed upon the main seat assembly. There is a refill orifice in the piston connecting the pressure chamber with the inlet. A relief valve is carried by the piston for venting the pressure chamber and there is a fluid driven apparatus for opening the relief valve, which apparatus is attached to the body. A hydraulic bypass in the body is connected to the fluid driven apparatus. The main seat assembly has a plurality of peripherally disposed fluid passages connecting the hydraulic bypass and the inlet to provide filtered fluid to the fluid driven apparatus. A first seal on the main seat assembly has a flat portion and an arcuate portion constrained within a channel. Lockout lugs formed in the seal prevent installation of an incorrectly sized piston.