Dental contra-angle handpiece with means for illuminating the tr

Details Dental contra-angle handpiece with means for illuminating the tr Dental contra-angle handpiece with means for illuminating the tr

1986-03-26

1987-07-14

Peshock, Robert

Dentistry

Apparatus

Having means to emit radiation or facilitate viewing of the...

A61C 100

Patent

active

046800115

ABSTRACT:
A dental handpiece comprises a front part with a head and a handle part. The head is provided with at least one miniature bulb mounted therein for illuminating the treatment area and the dental handpiece is provided with means for supplying electric power to the bulb. At the junction between the front part and the handle part of the handpiece is disposed an axially extending spring blade contact mounted in the handle part. When these parts are operatively connected, the spring blade contact is spaced from a fixed contact carried by the front part. A switch comprised of a push-knob is mounted on the handle part adjacent to the spring blade contact and operative to actuate the spring blade contact for closing the light circuit. The spring blade contact acts as a return spring to the push-knob so as to normally urge it to its open-circuit position. Thus, the dental surgeon can light the bulb only when required.

REFERENCES:
patent: 4561845 (1985-12-01), Meller

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