Chucks or sockets – Expanding – Collet type
Patent
1980-06-30
1982-10-26
Spruill, R. L.
Chucks or sockets
Expanding
Collet type
279109, 279119, B23B 522, B23B 534
Patent
active
043558160
ABSTRACT:
A chuck is disclosed for gripping an annular workpiece by jaws clamping against the inside wall of the workpiece. The jaws extend axially of the chuck and are rocked between clamping and release positions by levers which contact the radially outer face of the rearward end of the jaws as a result of pivoting about a point adjacent the radial outer periphery of the chuck body. The levers are moved by an axially movable actuator at the axial center of the chuck. The arrangement provides a mechanical advantage such that the chuck in closed position is substantially self locking.
REFERENCES:
patent: 1455351 (1923-05-01), Olson
patent: 1839401 (1932-01-01), Lewis
patent: 2361763 (1944-10-01), Goddard
patent: 2613943 (1952-10-01), Trudeau
patent: 3082015 (1963-03-01), Howwart
patent: 3099457 (1963-07-01), Howwart et al.
patent: 4236722 (1980-12-01), Felker
Heyrana Sr. Paul M.
Sheffer Collet Company
Spruill R. L.
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