Combination drill and screwdriver

Details Combination drill and screwdriver Combination drill and screwdriver

1976-04-05

1978-06-06

Smith, Al Lawrence

Compound tools

Cutter combined with other tool or tools

7165, B25F 300

Patent

active

040927539

ABSTRACT:
A combination screwdriver and drill attachment for a power tool including in one embodiment a bit having the distal end formed as a Phillips-head screwdriver for use not only as a screwdriver but for use in boring pilot holes for screws as well as performing counterboring and countersinking operations. In a second embodiment the combination screwdriver and drill attachment includes a screwdriver provided with a longitudinal passage through which a drill bit retractably passes.

REFERENCES:
patent: 3336611 (1967-08-01), Schepp
patent: 3484114 (1969-12-01), Rodin
patent: 3932904 (1976-01-01), Nilsson
patent: 3965510 (1976-06-01), Ernst

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