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. 20, 1987
Filed:
Oct. 25, 1985
Applicant:
Inventor:
Wayne A Priest, Kansas City, KS (US);
Assignee:
SOR, Inc., Olathe, KS (US);
Primary Examiner:
Int. Cl.
CPC ...
G01L / ;
U.S. Cl.
CPC ...
73716 ; 73706 ;
Abstract
A movable piston is supported by a flexible angular membrane around the perimeter of the piston in a piston chamber, having opposed walls which confront the opposite faces of the piston. The chamber has low and high pressure sides at said opposite sides of the piston. The potential movement of the piston is limited by contact of the piston face with the chamber wall, with the entire resistance to piston movement beyond the limit point being born by the chamber. The piston controls activation of an electric switch in response to movement of the piston.