Gear transmission assembly for electrical power tool

Details Gear transmission assembly for electrical power tool Gear transmission assembly for electrical power tool

2005-03-01

2005-03-01

Smith, Scott A. (Department: 3721)

Tool driving or impacting

Means to drive tool about an axis

Gear drive

C173S217000, C173S048000

Reexamination Certificate

active

06860341

ABSTRACT:
A gear transmission assembly for an electrical power tool includes a housing (6), a multi-stage gear train (1) located in the housing and having a plurality of axially displaceable indexing gears (4a, 4b) associated with respective stages of the gear train (1) and a shift device (2) for shifting the gear train (1) from one stage to another and having a shifting slide (3) displaceable from one shift stage to another, and a plurality of springable shifting stirrups (5a, 5b) connected with the shifting slide (3) and cooperating with respective indexing gears (4a, 4b) for displacing same in response to displacement of the shifting slide (3) between shift stages.

REFERENCES:
patent: 3500696 (1970-03-01), Berube
patent: 3872742 (1975-03-01), States
patent: 4493223 (1985-01-01), Kishi et al.
patent: 4710071 (1987-12-01), Koehler et al.
patent: 4791833 (1988-12-01), Sakai et al.
patent: 5339908 (1994-08-01), Yokota et al.
patent: 6086502 (2000-07-01), Chung
patent: 6431289 (2002-08-01), Potter et al.

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