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. 23, 1979
Filed:
Nov. 01, 1976
Myrl J Saarem, Carson City, NV (US);
Dale F Soukup, Meadow Vista, CA (US);
Richdel, Inc., Carson City, NV (US);
Abstract
A pilot type diaphragm valve assembly is provided which includes a solenoid-operated pilot valve which may be opened to remove fluid pressure from a chamber in the valve housing causing the main valve to open, and which may be closed to cause a buildup of hydraulic pressure in the valve housing causing the main valve to close. The solenoid-operated pilot valve includes an outlet which may be coupled to a reservoir at atmospheric pressure, or to any other suitable receptacle, to make the pressure differential across the diaphragm within the valve independent of pressure differentials in the fluid flow through the valve so as to obviate instability at low flow rates.