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:
Nov. 29, 2016
Filed:
May. 14, 2013
Applicant:
Snap-on Incorporated, Kenosha, WI (US);
Inventor:
Gordon A Putney, Lake Geneva, WI (US);
Assignee:
Snap-on Incorporated, Kenosha, WI (US);
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
B25B 21/02 (2006.01); B25D 11/10 (2006.01); F16H 25/08 (2006.01); F16H 25/12 (2006.01); B25D 16/00 (2006.01);
U.S. Cl.
CPC ...
B25B 21/02 (2013.01); B25B 21/026 (2013.01); B25D 11/102 (2013.01); B25D 11/104 (2013.01); F16H 25/08 (2013.01); F16H 25/122 (2013.01); B25D 16/00 (2013.01); Y10T 74/2101 (2015.01);
Abstract
A cam shaft is disclosed having an asymmetric chamfer for guiding a ball bearing deeper into a cam shaft groove to avoid ball loss when an immediate deceleration force is applied. The chamfer spaces the ball from an opening in the front face of a hammer that moves axially relative to the cam shaft when a tool having the cam shaft and hammer is dropped. The ball is therefore less likely to escape through the front opening of the hammer when the impact wrench is dropped.