Electric drill multi-functional apparatus

Details Electric drill multi-functional apparatus Electric drill multi-functional apparatus

1975-10-07

1978-04-18

Lanham, C.W.

Electrical transmission or interconnection systems

Switching systems

Plural switches

72391, 85 66, 85 68, 85 70, 85 71, 173123, 200 1B, 408124, H01H 2100

Patent

active

040853373

ABSTRACT:
An electric drill is disclosed having a tool housing, and a power shaft within the housing journaled for rotation. The tool can perform several different functions together or alternatively and includes a jaw closing function, a drilling function, a hammering function, an extracting function and the like. The application is also concerned with an automatic means for going from one function to another either automatically by the rotation of a shaft or in response to the extent to which a trigger on the tool is depressed inwardly toward the tool housing.

REFERENCES:
patent: 2147045 (1939-02-01), Lembke
patent: 2764705 (1956-09-01), Albertson
patent: 3149681 (1964-09-01), Drew
patent: 3163237 (1964-12-01), Fulop
patent: 3215867 (1965-11-01), Mellinger
patent: 3270821 (1966-09-01), Bassett
patent: 3725624 (1973-04-01), Emmons

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