Chucks or sockets – Pivoted jaw
Patent
1987-10-07
1988-11-22
McQuade, John
Chucks or sockets
Pivoted jaw
279 35, 269237, 269254MW, 128346, B25B 504, B25B 508
Patent
active
047860634
ABSTRACT:
A bone vise for holding a bone or bone fragment immobile during surgery to enable a surgeon to perform desired sculpting or other operations thereon. The vise includes a planar base member with an integral threaded post upstanding from its central portion and a platform threadedly received on the post. A plurality of elongated gripper members are pivotally mounted intermediate their ends on the platform about axes which are tangent to a circle whose center lies within a bone receiving and engaging region. Each gripper member has a toothed surface at one end adjacent the bone receiving and engaging region and a cam surface at the opposite end weight biased into engagement with the base member. Rotation of the platform in one direction causes movement thereof away from the base member and enlargement of the bone receiving and holding region for insertion or removal of the bone. Rotation of the platform in the opposite direction causes movement thereof toward the base member and reduction of the bone receiving and holding region for gripping of the bone by the toothed surfaces of the gripping members. The base member may include a bearing surface with a low coefficient of friction for engagement by the cam surfaces. At least one handle member integral with the base member may be provided for lifting the base member and for maintaining the base member in a desired position.
REFERENCES:
patent: 871962 (1907-11-01), Stewart
patent: 925212 (1909-06-01), McConville
patent: 941831 (1909-11-01), Widmann
patent: 1022761 (1912-04-01), Stvanek
patent: 1307011 (1919-06-01), Kohn
patent: 1467508 (1923-09-01), Seng
patent: 1489377 (1924-04-01), Wood et al.
patent: 2448881 (1948-09-01), Glynn
patent: 3022067 (1962-02-01), Stolz
patent: 3612254 (1971-10-01), Wideman
patent: 3902727 (1975-09-01), Banvas et al.
patent: 3952384 (1976-04-01), Goldry et al.
patent: 4078539 (1978-03-01), Sprague
patent: 4619460 (1986-10-01), Rohm
Engelhardt John A.
Tarr Richard R.
Bishop Steven C.
Boehringer Mannheim Corporation
McQuade John
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