Ball type bur gripping mechanism for dental handpiece

Details Ball type bur gripping mechanism for dental handpiece Ball type bur gripping mechanism for dental handpiece

1984-11-21

1986-03-11

Peshock, Robert

Dentistry

Apparatus

Having motor or means to transmit motion from motor to tool

279 1C, A61C 108

Patent

active

045753385

ABSTRACT:
A dental handpiece head having a bur-gripping mechanism which includes a spring-loaded ball carrier urged by the spring into operative engagement with a tapered ramp which in turn forces the several balls into clamping engagement with the shank of a dental bur positioned in the central bore of the ball carrier. The balls bite into the shank providing positive engagement. Downward force applied to the ball carrier against the spring, by a cam lever or by a pushbutton, releases the engagement.

REFERENCES:
patent: 4209182 (1980-06-01), Sheldon
patent: 4493645 (1985-01-01), Nakanishi

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