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. 09, 2010
Filed:
May. 27, 2009
Hiroyuki Tsubakimoto, Osaka, JP;
Koichi Hashimoto, Osaka, JP;
Hisashi Oda, Osaka, JP;
Hidekazu Yuasa, Osaka, JP;
Kunihiko Tatsu, Osaka, JP;
Hiroyuki Tsubakimoto, Osaka, JP;
Koichi Hashimoto, Osaka, JP;
Hisashi Oda, Osaka, JP;
Hidekazu Yuasa, Osaka, JP;
Kunihiko Tatsu, Osaka, JP;
Panasonic Electric Works Co., Ltd., Osaka, JP;
Abstract
A hammer drill includes a motor; a spindle rotatingly driven by the motor and holding an output bit; a motion conversion member for converting rotational movement of the motor to reciprocating movement; a striker reciprocatingly driven by the motion conversion member for applying an axial striking force to the output bit; a striking-motion-releasing mechanism for releasing the striking force applying action exercised by the striker; and a tightening-torque adjusting clutch for interrupting the transfer of the rotational force to the output bit by increasing a load torque.