Electrical tool with a multi-stage gear transmission

Details Electrical tool with a multi-stage gear transmission Electrical tool with a multi-stage gear transmission

2007-10-29

2011-11-29

Le, David D (Department: 3655)

Planetary gear transmission systems or components

With means to vary drive ratio or disconnect drive

Gear shiftable axially to disconnect or vary ratio

C173S216000, C074S473300

Reexamination Certificate

active

08066611

ABSTRACT:
An electrical tool includes a multi-stage gear transmission (10) located in the gear transmission housing (6) and having at least two axially displaceable indexing gear (42a, 42b), a shifting device (12) for shifting the gear transmission from one stage to another stage and having a shifting slide (14) linearly displaceable between different shifting positions, and at least two connection elements (32) for connecting the shifting slide (14) with respective indexing gears (42a, 42b), with the shifting slide (14) having a tracing profile (20) having two control tracks (22, 24), and the connection elements each having a first and second tracing sections (30a, 30b) to which the tracing profile (20) applies a shifting force in stages and which are arranged on opposite sides of a pivot axis (SA) of a respective connection element (32).

REFERENCES:
patent: 6860341 (2005-03-01), Spielmann et al.

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