Powered hand-held tool with unitary sub-assembly mounted by the

Details Powered hand-held tool with unitary sub-assembly mounted by the Powered hand-held tool with unitary sub-assembly mounted by the

1976-02-13

1978-03-28

Skudy, R.

Electrical generator or motor structure

Dynamoelectric

Rotary

310 89, 310 42, 74412TA, 173163, 408239R, H02K 714

Patent

active

040817040

ABSTRACT:
A cordless electric drill has a housing formed by two clam-shell sections secured together by a plurality of fasteners. These housing sections define a closed motor and gear compartment which receives a sub-assembly, the latter including a generally U-shaped gear box frame mounting a small D.C. electric motor, a plurality of reduction gears and a spindle. A drill chuck is mounted on the spindle. The sub-assembly and the housing sections include co-operating mounting formations, defined in part by projections and cavities, which mounting formations serve to mount the sub-assembly in place in response to securing the clam-shell housing sections together by the aforesaid fasteners.

REFERENCES:
patent: 2350631 (1944-06-01), Mitchell
patent: 3121813 (1964-02-01), Pratt
patent: 3134275 (1964-05-01), Davison
patent: 3213303 (1965-10-01), Riley
patent: 3325659 (1967-06-01), Douglas
patent: 3413498 (1968-11-01), Bowen
patent: 3418504 (1968-12-01), Paule
patent: 3536943 (1970-10-01), Bowen
patent: 3546502 (1970-12-01), Botefuhr
patent: 3651707 (1972-03-01), Rees
patent: 3652879 (1972-03-01), Plunkett
patent: 3691407 (1972-09-01), Klett
patent: 3694680 (1972-09-01), Jacyno
patent: 3908139 (1975-09-01), Duncan

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