Miniaturized contra-angle

Details Miniaturized contra-angle Miniaturized contra-angle

1980-11-24

1982-03-23

Peshock, Robert

Dentistry

Apparatus

Having motor or means to transmit motion from motor to tool

A61C 112, A61C 302

Patent

active

043210414

ABSTRACT:
A dental hand-piece of the type known as "contra-angle" uses a pair of helical gears on shafts that rotate on respective axes which pass by each other but do not intersect. The gears, one set of which is on a tool driver and the other set of which may be formed in the shaft of a dental tool, engage in respective pitch circles, the diameters of which are smaller than their respective outer diameters.

REFERENCES:
patent: 3368279 (1968-02-01), Weissman

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