Chucks or sockets – Socket type – Self-grasping
Patent
1975-03-12
1976-08-17
Simpson, Othell M.
Chucks or sockets
Socket type
Self-grasping
128 92B, 128 92E, 279 75, B23B 534
Patent
active
039750329
ABSTRACT:
A wire driving assembly for use as a surgical instrument engages a wire in rotating driving relation through a retainer which includes a passageway therethrough for passage of the wire. Cooperating with the retainer is a body member, the latter including a bore in which the retainer is received. Driving connection between the retainer and the wire is achieved by a tapered interior bore of the body member and cooperating engaging elements received in sets of apertures located along the length of the retainer and radially thereof. Each set of apertures is of a different diameter, the diameter of the set at the forward end of the retainer being the largest. Spherical elements are positioned in the apertures and move radially inwardly to a wire engaging position and radially outwardly to a wire releasing position. In one form, a biasing spring urges the retainer towards the wire driving position and release of the wire is effected either by movement of a release element or rearward movement of the driving assembly relative to the wire. In another form, a biasing spring urges the body member forward of the retainer and release is effected by a manual release element. In still another form, a biasing spring urges the body member to the release position and a manual lever is used to establish a wire engaging position by urging the body member in a forward direction.
REFERENCES:
patent: 1714684 (1929-05-01), Malcolm
patent: 2959422 (1960-11-01), Manos
patent: 3701538 (1972-10-01), Hartsell
Bent John H.
Russo Anthony
Briggs W. R.
Minnesota Mining and Manufacturing Company
Simpson Othell M.
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