Collet wrench

Details Collet wrench Collet wrench

1976-02-24

1977-04-05

Peshock, Robert

A61C 110

Patent

active

040153355

ABSTRACT:
In combination, a turbine driven dental handpiece and a collet wrench therefor. The handpiece includes a rotor having a shaft, and a collet is threadedly received within the shaft. A dental bur is adapted to be inserted in one end of the collet, and the other end of the collet has a bore of non-circular cross-section. The wrench includes means for preventing rotation of the rotor shaft and means for rotating the collet relative to the shaft. The collet rotating means comprises a shaft having an end of non-circular cross-section, which end is received in the end of the collet. The wrench also includes means for rotating the shaft to advance the collet within the rotor shaft and means to prevent further rotation of the shaft after a predetermined rotational force has been applied to the collet.

REFERENCES:
patent: 3325899 (1967-06-01), Staunt
patent: 3333320 (1967-08-01), Black

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