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:
Apr. 16, 2002
Filed:
Nov. 12, 1999
Yasuo Sasaki, Hitachinaka, JP;
Hitachi Koki Co., Ltd., Tokyo, JP;
Abstract
A reciprocating tool includes a rotatable drive gear. A pin connected to the drive gear is eccentric with respect to an axis of rotation of the drive gear. A plunger extending perpendicular to the pin is movable upward and downward. A connector fixed to the plunger engages the pin. A cam is provided with the pin at an eccentric position. A cam holding member has an eccentric recess accommodating at least part of the cam. The cam holding member is connected to the drive gear for rotation responsive to rotation of the drive gear. A first engagement portion is provided on the cam. A second engagement portion is provided on the cam holding member. The second engagement portion is engageable with the first engagement portion. Engagement between the first engagement portion and the second engagement portion can be canceled to allow rotation of the cam relative to the cam holding member. It is possible to establish engagement between the first engagement portion and the second engagement portion while holding the cam at an angular position which occurs as a result of the rotation of the cam.