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. 28, 1992
Filed:
Sep. 25, 1989
Applicant:
Inventors:
David A Giardino, Utica, NY (US);
William K Wallace, Barneveld, NY (US);
Joseph R Groshans, Clinton, NY (US);
Assignee:
Chicago Pneumatic Tool Company, Utica, NY (US);
Attorney:
Primary Examiner:
Assistant Examiner:
Int. Cl.
CPC ...
B23B / ;
U.S. Cl.
CPC ...
173 93 ; 173 935 ; 173104 ; 81467 ;
Abstract
A reversible powered impact wrench is provided wherein improvements are incorporated in the detenting of the reverse direction valve, venting of excessive air pressure within the impact wrench motor housing which may use light weight material due to improved clutch and camming means and wherein an improved one piece anvil-timing shaft is designed to be supported by the impact wrench hammer and rotor.