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. 28, 1990
Filed:
May. 16, 1989
Applicant:
Inventors:
Richard J Everett, New Hartford, NY (US);
David A Giardino, Utica, NY (US);
William K Wallace, Barneveld, NY (US);
Assignee:
Chicago Pneumatic Tool Company, Utica, NY (US);
Attorney:
Primary Examiner:
Assistant Examiner:
Int. Cl.
CPC ...
B25B / ;
U.S. Cl.
CPC ...
173 12 ; 192 / ; 192150 ;
Abstract
A hand held pneumatic tool is provided for driving fasteners in which the cam shape and arrangement between the driving and driven cams provides a 'dwell' time for preventing further impacts after the desired torque has been reached and a latch arrangement provided to prevent undesired shut-off in the reverse direction of operation. Means are provided to assure restart after shut-off, and a ball spline between the driven cam and spindle is used to increase accuracy.