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:
Feb. 25, 1992
Filed:
Dec. 17, 1990
Applicant:
Inventors:
Edwin J Hunter, Rancho Santa Fe, CA (US);
Loren W Scott, Carlsbad, CA (US);
Assignee:
Edwin J. Hunter, Rancho Santa Fe, CA (US);
Attorney:
Primary Examiner:
Assistant Examiner:
Int. Cl.
CPC ...
F16K / ;
U.S. Cl.
CPC ...
137540 ; 251337 ;
Abstract
An adjustable pressure check valve comprises a generally cylindrical body having a throughbore communicating with an inlet and an outlet at opposite ends thereof, an annular valve seat in the throughbore, a valve member having a sealing surface for engagement with the seat disposed in the bore for movement into and out of engagement with the seat, a compression spring disposed in the throughbore for biasing the valve member into engagement with the seat, and an adjusting member for adjusting the biasing force of the spring on the valve member.