Dentistry – Apparatus – Having motor or means to transmit motion from motor to tool
Patent
1990-09-21
1991-12-24
Wilson, John J.
Dentistry
Apparatus
Having motor or means to transmit motion from motor to tool
433126, 433127, A61C 108, A61C 114
Patent
active
050747894
ABSTRACT:
A chucking device for a dental handpiece includes a cutting tool, a collet having a plurality of slits to permit the cutting tool to be received and attached in position in the collet, a rotational sleeve for transmitting rotation to the collet, a locking member adapted to permit the diameter of the collet to be changed, and a coil spring thrusting the locking member along the inserting direction of the cutting tool. The outer periphery of the collet has a tapered surface adapted to be enlarged in diameter along the inserting direction of the cutting tool. The locking member is shifted along the tapered surface under the thrusting force of the coil spring to change the diameter of the collet to hold the cutting tool therein. When the locking member is pressed down against the coil spring, the locking member is then moved along the tapered surface in a direction opposite to the inserting direction of the cutting tool to release the cutting tool to permit the tool to be detached from the collet. If a tapered surface flared in the tool releasing direction is provided on the inner periphery of the collet, a tapered surface is formed on the outer periphery of the collet on insertion of the cutting tool to provide the similar function.
REFERENCES:
patent: 3798776 (1974-03-01), Lentine et al.
patent: 3869796 (1975-03-01), Thorburn
patent: 4406470 (1983-09-01), Kataoka et al.
patent: 4493645 (1985-01-01), Nakanishi
patent: 4874314 (1989-10-01), Fleer et al.
Baxley Charles E.
Cherichetti Cindy A.
Nakanishi Dental Mfg. Co. Ltd.
Wilson John J.
LandOfFree
Chucking device for dental handpiece does not yet have a rating. At this time, there are no reviews or comments for this patent.
If you have personal experience with Chucking device for dental handpiece, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Chucking device for dental handpiece will most certainly appreciate the feedback.
Profile ID: LFUS-PAI-O-40549