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.

Date of Patent:
Aug. 15, 2006

Filed:

Feb. 03, 2005
Applicants:

Yasuo Wada, Fuchu, JP;

Shinji Morimune, Fuchu, JP;

Inventors:

Yasuo Wada, Fuchu, JP;

Shinji Morimune, Fuchu, JP;

Assignee:

Ryobi Ltd., Hiroshima, JP;

Attorney:
Primary Examiner:
Assistant Examiner:
Int. Cl.
CPC ...
E21B 3/00 (2006.01);
U.S. Cl.
CPC ...
Abstract

An electric power tool includes a housing, an inner case and a hammer case. The housing receiving a motor has a pair of half portions. The inner case receives a planetary gear train. An input side of the planetary gear train is connected to a drive shaft of the motor. The housing receives the inner case. The hammer case receives a hammer unit. An input side of the hammer unit is connected to an output shaft of the planetary gear train to convert rotation of the output shaft of the planetary gear train into an intermittent striking power outputted from an output shaft of the hammer unit. The hammer case receives the inner case having recesses. The hammer case has elongated holes aligned with the recesses. Each half portion has bosses engaging with the elongated holes of the hammer case, which are aligned with the recesses of the inner case.


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