Tools – Wrench – screwdriver – or driver therefor – Having work engaging and force exerting portion inserted...
Patent
1981-08-13
1984-01-10
Schmidt, Frederick R.
Tools
Wrench, screwdriver, or driver therefor
Having work engaging and force exerting portion inserted...
81452, 248206R, 248362, B25B 2308
Patent
active
044247290
ABSTRACT:
An accessory for use with a screw driver and screw to prevent the screw driver from accidentally sliding off the screw head. The accessory is a sleeve having a bore to accept freely the screw driver bit and screw therein to permit rotation of the screw driver and screw relative to the bore. A releasable securing structure is mounted on the sleeve so as to engage the surface to receive the screw when an inner end of the sleeve is adjacent the surface, so as to releasably secure the sleeve to the surface. One embodiment of the releasable securing structure includes suction cups mounted adjacent the inner end of the sleeve and positioned so that there is a clearance between the end of the sleeve and the cups to permit the cups to be deformed elastically from an inactive condition prior to attachment to the surface. An alternative structure utilizes actuating devices which deform the suction cups by moving diaphragms thereof towards the surface so as to decrease the volumes thereof prior to attachment, and then to hold the cups and to move the diaphragms away from the surface so as to increase volumes thereof to maintain suction.
REFERENCES:
patent: Re23201 (1950-02-01), Price
patent: 2351666 (1944-06-01), Cohen
patent: 2721589 (1955-10-01), Hammer
patent: 2900757 (1959-08-01), Grimm, Jr.
patent: 3638889 (1972-02-01), Samuelson
patent: 3916736 (1975-11-01), Clemens
Meislin Debra S.
Schmidt Frederick R.
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