Dentistry – Apparatus – Having motor or means to transmit motion from motor to tool
Patent
1998-04-29
1999-12-14
Buiz, Michael
Dentistry
Apparatus
Having motor or means to transmit motion from motor to tool
A61C 114
Patent
active
060009403
ABSTRACT:
A collet for holding a rotatable tool such as a bur or drill bit having a stepped shaft including a drive shaft having a stepped internal diameter mating with the external diameter of the bur or drill shaft, a plurality of hardened balls mounted in openings in the sleeve, a locking sleeve having a tapered surface movable with the force of a spring against the balls to force the balls against the shaft to lock the shaft in the sleeve. A rotatable locking collar is movable to release the spring force to release the shaft for removal and replacement of the tool.
REFERENCES:
patent: 3631597 (1972-01-01), Lieb
patent: 3775851 (1973-12-01), Flatland
patent: 5490683 (1996-02-01), Mickel et al.
patent: 5584689 (1996-12-01), Loge
Ahmad Shaher
Buss Rick A.
Wei Michael F.
Buiz Michael
Wagner John E.
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