Tools – Wrench – screwdriver – or driver therefor – Rigid jaws
Patent
1979-08-31
1981-03-03
Jones, Jr., James L.
Tools
Wrench, screwdriver, or driver therefor
Rigid jaws
81463, B25B 1900
Patent
active
042533538
ABSTRACT:
An impact wrench for hexagonal nuts including a unitary metal plate having a central hexagonally shaped aperture and six equally peripherally spaced notches, each having an impact surface coplanar with successive sides of the nut.
REFERENCES:
patent: 1941565 (1934-01-01), Mandl
patent: 3930776 (1976-01-01), Keller
patent: 4079641 (1978-03-01), Junkers
American Machinist, vol. 43, No. 11, Sep. 9, 1915, p. 444.
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