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:
Feb. 25, 2003
Filed:
Feb. 23, 2001
Applicant:
Inventors:
Takefumi Furuta, Anjo, JP;
Takao Kuroyanagi, Okazaki, JP;
Assignee:
Makita Corporation, Aichi-Ken, JP;
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
B25B 2/3157 ; F16D 4/320 ;
U.S. Cl.
CPC ...
B25B 2/3157 ; F16D 4/320 ;
Abstract
A clutch mechanism ( ) includes an internal gear ( ) and a plurality of cylindrical pins ( ) pressed rearward against a front end surface of the internal gear ( ) by a coil spring ( ) via a flat washer ( ). Provided on the internal gear's front end surface are a plurality of cam protrusions ( ) corresponding in number and position with the pins ( ). Each cylindrical pin ( ) has at its rear end surface a circumferentially chamfered edge ( ) and each cam protrusion ( ) has a pair of guide slope surfaces ( ) with same inclination as the chamfered edge ( ) of the pin ( ).