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:
Aug. 03, 2010
Filed:
Feb. 27, 2007
Shinichirou Satou, Hitachinaka, JP;
Tsukasa Suzuura, Hitachinaka, JP;
Shinki Ohtsu, Hitachinaka, JP;
Shinichirou Satou, Hitachinaka, JP;
Tsukasa Suzuura, Hitachinaka, JP;
Shinki Ohtsu, Hitachinaka, JP;
Hitachi Koki Co., Ltd., Tokyo, JP;
Abstract
An electrical power tool () includes a housing (), an electrical motor (), a motion conversion mechanism (), a counterweight holding member (), a counterweight (), and support members (). The electrical motor () is accommodated in the housing (). The motion conversion mechanism () is configured to convert a rotary motion of the electrical motor () into a reciprocation motion. The counterweight holding member () extends in a direction perpendicular to directions of the reciprocation motion and is capable of being elastically deformed in the directions of the reciprocation motion. The counterweight () is supported by the counterweight holding member () and is capable of reciprocating in the directions of reciprocation motion together with the counterweight holding member (). The support members () are positioned away from the counterweight () by a predetermined distance for supporting the counterweight holding member () to the housing (). The counterweight () is interposed between or among the support members ().