Electric tool

Details Electric tool Electric tool

1990-07-11

1992-12-15

Watts, Douglas D.

Tool driving or impacting

Convertible

200567, 310 47, 310 50, B25F 502

Patent

active

051708515

ABSTRACT:
For the purposes of assembling an electric tool, and especially an electric hand tool such as, for example, a hand drill, a grinder or a sabre saw, it is proposed to use modular components that are to be axially inserted into and connected with each other. The components comprise a self-contained electric driving motor that supports the rotor shaft in a centered position by means of end shields on both sides that are rigidly fixed to the stator, a self-contained gearing head that is fixed to the motor, and at least a partially tubular, single piece main housing that accommodates the driving motor and the gearing head, an electric circuitry module inserted into the main housing, and a rear cover for the housing.

REFERENCES:
patent: 4370579 (1983-01-01), Kobayashi et al.
patent: 4505170 (1985-03-01), Van Laere
patent: 4619162 (1986-10-01), Van Laere
patent: 4822958 (1989-04-01), Van Laere
patent: 4905423 (1990-03-01), Van Laere

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