Screwdriver

Details Screwdriver Screwdriver

1982-03-08

1984-03-20

Schmidt, Frederick R.

Tools

Wrench, screwdriver, or driver therefor

Having work engaging and force exerting portion inserted...

145 61L, B25G 100

Patent

active

044373651

ABSTRACT:
A screwdriver capable of being operated conventionally by the handle as a manual drive and alternatively being capable of being connected to a power drill so that it may be driven automatically. The screwdriver includes a conventional shank and tip at its end to engage the head of a screw. The handle has a coupling either permanently or removably attached to its top and which is adapted to fit into a conventional chuck of a power drill so as to connect the screwdriver to the power drill so that it may be driven automatically.

REFERENCES:
patent: 814020 (1906-03-01), Clifford
patent: 921840 (1909-05-01), Jacobs
patent: 2323018 (1943-06-01), De Vellier
patent: 2484765 (1949-10-01), Turgeon
patent: 2620001 (1952-12-01), Fratz et al.
patent: 2745448 (1956-05-01), Leake
patent: 3276299 (1966-10-01), Halburian
patent: 3289503 (1966-12-01), Klatt
patent: 3424212 (1969-01-01), Kemper
patent: 3738768 (1973-06-01), Kuhn

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