Tools – Wrench – screwdriver – or driver therefor – Having work engaging and force exerting portion inserted...
Patent
1985-07-03
1986-04-15
Schmidt, Frederick R.
Tools
Wrench, screwdriver, or driver therefor
Having work engaging and force exerting portion inserted...
81454, 81458, B25B 2308
Patent
active
045819637
ABSTRACT:
A plurality of devices are disclosed for supporting threaded screws in a plane normal to a surface into which the screws are threaded. Each embodiment includes means for supporting the shank of the screw at points intermediate the ends thereof rather than only at the head thereof. The means is resiliently expandable to permit passage of the head of the screw past the supporting means for disengagement of the device after the screw has obtained substantial threaded purchase with an engaged structure.
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patent: 2954809 (1960-10-01), Loewy
patent: 3115168 (1963-12-01), Acres
patent: 3245446 (1966-04-01), Morifuji
patent: 3361169 (1968-01-01), Charchenko
patent: 4221249 (1980-09-01), Mazzeo et al.
Schmidt Frederick R.
Temko Charles E.
Zatarga J. T.
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