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. 22, 1977
Filed:
May. 19, 1975
Applicant:
Inventors:
Eberhard Gocke, Mosbach, DT;
Rudolf Vollmer, Mosbach, DT;
Assignee:
Braukmann Armaturen AG, Rothrist, CH;
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
F16K / ;
U.S. Cl.
CPC ...
137116 ; 137218 ;
Abstract
A valve structure has a body with an inlet, an outlet and an intermediate by pass aperture. A pair of identical check valves are located in the body, one to each side of the aperture. The check valve nearest the inlet has a slidable housing, movable to cover the aperture, biased away from the fixed housing of the second check valve by a spring. The check valves are closable by individual springs in the direction of the inlet but the individual springs are stronger than the spring separating the housings.