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:
Dec. 09, 1997
Filed:
Oct. 17, 1995
Haruo Tanaka, Sayama, JP;
Tadaaki Inaba, Sayama, JP;
Honda Giken Kogyo Kabushiki Kaisha, Tokyo, JP;
Abstract
An apparatus for forming a snap ring groove in a clutch drum by pressing a lower die, an upper die, a workpiece supporting member, first sliding members and second sliding members, a workpiece receiving member fixed on a radially inner end of each first sliding member, and a punch fixed on an upper end of each upwardly bent portion in a radially inner end portion of each second sliding member. The first sliding members and the second sliding members are pushed radially inwards and outwards, respectively, via a cam mechanism by lowering the upper die. The cam mechanism is made of a first cam mechanism for driving the first sliding members and a second cam mechanism for driving the second sliding members. The first cam mechanism is arranged to push the first sliding members radially inwards, when lowering the upper die, with a radially outer end portion thereof operating as a point of action. The second cam mechanism is arranged to push the second sliding members radially outwards, when lowering the upper die, with a radially inward end portion operating as a point of action.