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:
May. 24, 1983
Filed:
Jun. 03, 1981
Ronald G Friend, Franklin, MA (US);
Crosby Valve & Gage Company, Wrentham, MA (US);
Abstract
A pressure responsive pilot valve for a pressure relief valve of the type held closed by system pressure applied to a dome over the valve member. The pilot valve has an inlet port exposed to system pressure, an exhaust port and a control port connected to the dome. Below a set system pressure, the pilot valve interconnects the inlet and control ports to pressurize the dome. At the set pressure, the pilot valve interconnects the control and exhaust ports. The set pressure is adjustable by a sleeve threaded in the body and the blowdown is adjustable by a stem extending through the sleeve.
Data source: USPTO (United States Patent and Trademark Office) public patent records. Weekly synchronization. How IDiyas builds this profile