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:
Aug. 15, 1978
Filed:
Nov. 02, 1976
Applicant:
Inventors:
Karl Gosta Karden, Nacka, SE;
Karl Gustav Berger, Nacka, SE;
Assignee:
Atlas Copco Aktiebolag, Nacka, SE;
Attorney:
Primary Examiner:
Assistant Examiner:
Int. Cl.
CPC ...
F16K / ;
U.S. Cl.
CPC ...
251282 ; 251325 ; 173169 ; 13761416 ;
Abstract
A safety valve for pneumatic tools, comprising first and second valve bodies which are movable relative to each other and which carry cooperating seat surfaces. The first valve body is of tubular shape and is displaceable between a closed and an opened position by means of a lever. The second valve body is pressure balanced and biased by a spring to maintain sealing contact with the first valve body as the latter is displaced. A lever operated arresting means is arranged to lock the second valve body against movement and thereby interrupt the sealing contact between the first and second valve bodies as the first valve body is displaced.