Dental handpiece

Details Dental handpiece Dental handpiece

1979-07-09

1981-08-04

Peshock, Robert

Dentistry

Apparatus

Having motor or means to transmit motion from motor to tool

A61C 114

Patent

active

042819881

ABSTRACT:
A dental handpiece includes a drive shaft rotatably supported interiorly thereof, the drive shaft being hollow at least at the operating end thereof and having an internal thread; and a tubular friction collet in the hollow space having an external thread end evidencing in the inoperative condition thereof inwardly bent resilient tongues formed by a plurality of slits for the receipt and gripping of the shaft of an implement. The external thread of the friction collet is arranged at the implement-sided end thereof as in a threaded collet, the friction collet having an external conical surface and the hollow drive shaft having an internal conical surface cooperating with the external conical surface.

REFERENCES:
patent: 1114653 (1914-10-01), Starin
patent: 2778650 (1957-01-01), Benjamin et al.
patent: 3962788 (1976-06-01), Flatland

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