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:
Mar. 02, 1999
Filed:
Oct. 20, 1997
Applicant:
Inventors:
Cliff P Ungerecht, Walla Walla, WA (US);
George Sesser, Walla Walla, WA (US);
Assignee:
Nelson Irrigation Corporation, Walla Walla, WA (US);
Attorney:
Primary Examiner:
Assistant Examiner:
Int. Cl.
CPC ...
G05D / ;
U.S. Cl.
CPC ...
13750525 ; 137508 ; 137510 ; 13761414 ;
Abstract
A combination pressure regulator/drain check valve comprising a housing having an inlet, an outlet and a flowpath therebetween, the flowpath at least partially defined by a reciprocable plunger. One end of the plunger closest the inlet approaches a pressure regulator seat while the opposite end closest the outlet is engageable with a drain check valve seat. The plunger is normally biased toward the drain check seat.