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:
Dec. 18, 1979
Filed:
May. 24, 1977
Applicant:
Inventors:
Joseph J Napolitano, Paramus, NJ (US);
Michael Richardson, Paterson, NJ (US);
Assignee:
Auto Research Corporation, Oakland, NJ (US);
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
F16K / ;
U.S. Cl.
CPC ...
137494 ; 137467 ;
Abstract
Pressure responsive piston valve with spring controlled detent balls; a detent pressure spring extends longitudinally through the piston and urges a biasing ball against detent balls which are longitudinally offset from the biasing ball; the detent balls are driven into a detent groove in the cylinder for the piston; pressure on the piston forces the detent balls out of the detent groove; calibrating means for the spring.