Electric motor driven hand-held drill

Details Electric motor driven hand-held drill Electric motor driven hand-held drill

1979-08-21

1981-04-07

Duggan, Donovan F.

Electrical generator or motor structure

Dynamoelectric

Rotary

310 43, H02K 714

Patent

active

042609160

ABSTRACT:
In a hand-held drill driven by an electric motor, the motor stator is positioned within a metal casing. A plastic layer covers the interior surface of the metal casing and laterally encloses the stator. Openings are formed through the metal casing between its interior and exterior surface and the plastic layer is held in interlocking engagement within these openings.

REFERENCES:
patent: 3401281 (1968-09-01), Martin et al.
patent: 3432703 (1969-03-01), Sheps et al.
patent: 3444402 (1969-05-01), Cartier
patent: 4135106 (1979-01-01), Jollois

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