Electric power tool

Details Electric power tool Electric power tool

2006-08-15

2006-08-15

Smith, Scott A. (Department: 3721)

Tool driving or impacting

Means to drive tool about an axis

Electric motor

C173S216000, C173S205000, C173S128000

Reexamination Certificate

active

07090032

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.

REFERENCES:
patent: 5056607 (1991-10-01), Sanders
patent: 6394191 (2002-05-01), Nakane
patent: 6725945 (2004-04-01), Sugimoto et al.
patent: 2003/0089510 (2003-05-01), Sugimoto et al.
patent: 2005/0236170 (2005-10-01), Lee
patent: 2005/0257945 (2005-11-01), Justis et al.
patent: 2006/0000623 (2006-01-01), Ortt et al.
patent: A-2001-054874 (2001-02-01), None
patent: A-2003-145439 (2003-05-01), None
patent: 2005066804 (2005-03-01), None

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