Tools – Wrench – screwdriver – or driver therefor – Having work engaging and force exerting portion inserted...
Patent
1994-10-11
1996-06-18
Kisliuk, Bruce M.
Tools
Wrench, screwdriver, or driver therefor
Having work engaging and force exerting portion inserted...
81439, B25B 2300
Patent
active
055267211
ABSTRACT:
A tool having a plurality of changeable pin-shaped tool elements comprises a substantially cylindrical housing having a cavity therein opening to the outside through a passage opening lying substantially on the axis of the housing. This cavity contains a plurality of tool elements spaced regularly about the circumference of the housing and lying outside the axis of the housing in their rest positions, the tool elements each comprising actuating means projecting outwardly of the housing and being movable in longitudinal direction thereof for displacing the respective tool element between its resting position within the housing and an operative position in which it projects outwardly of the housing through the passage opening. Locking means are provided for rotatingly and longitudinally locking each tool element in the operative position. Each actuating means together with the respective tool element is movable beyond its operative position and is allowed to come in engagement with locking faces acting as said locking means by rotation about the longitudinal axis of the tool element and a reverse displacement in longitudinal direction.
REFERENCES:
patent: 1501222 (1924-07-01), Lamp
patent: 2242873 (1941-05-01), Thompson
patent: 2749953 (1956-06-01), Rundle
patent: 2765013 (1956-10-01), Pedersen
patent: 3006395 (1961-10-01), Dye
patent: 3194286 (1965-07-01), Wagner
patent: 3750729 (1973-08-01), Lemieux
patent: 4463788 (1984-08-01), Corona et al.
Danganan Joni B.
Kisliuk Bruce M.
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