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. 27, 2001
Filed:
Aug. 25, 2000
Takahiro Sakaguchi, Anjo, JP;
Yasutoshi Shimma, Anjo, JP;
Makita Corporation, Anjo, JP;
Abstract
A hammer drill (,) includes an intermediate shaft (,), a clutch ring (,), a second gear (,), and a boss (,) all mounted on the intermediate shaft (,). Also included are a rotatable change lever (,) and a clutch plate (,) which has lock claws (,). When the change lever (,) is fully rotated in the clockwise direction, the hammer drill (,) is placed in a drill-only mode where the clutch ring (,) meshes only with the second gear (,). When the change lever (,) is rotated approximately 45 degrees counterclockwise from the foregoing position, the hammer drill (,) is placed in a hammer drill mode, where the clutch ring (,) meshes with the second gear (,) and the boss (,). When the change lever (,) is rotated approximately another 45 degrees counterclockwise, the hammer drill (,) is placed in a neutral position where tile second gear (,) is disengaged from the clutch ring (,), with the clutch ring (,) remaining in mesh with the boss (,). When the change lever (,) is rotated another 45 degrees counterclockwise, the hammer drill (,) enters into a hammer-only mode where the second gear (,) meshes with, and is prevented from rotation by, the lock claws (,) of the clutch plate (,).