Dentistry – Apparatus – Having motor or means to transmit motion from motor to tool
Patent
1981-08-25
1983-08-16
Wilson, John J.
Dentistry
Apparatus
Having motor or means to transmit motion from motor to tool
433 29, A61C 108
Patent
active
043988857
ABSTRACT:
There is disclosed a dental handpiece comprising a grip sleeve, a head portion provided at one end of the handpiece, a drive unit provided in the head portion for driving a dental implement, and a connecting portion arranged at an opposite end of the handpiece for rotation relative to the grip sleeve and releasably connected at one end to the grip sleeve. The connecting portion serves to convey operating media for the handpiece, and is adapted for connection at its other end to a supply tube for supplying the operating media. In order to provide built-in illumination in the region of the dental implement, an elongate photoconductive device is provided which extends generally longitudinally within the handpiece and includes, within the rotatable connecting portion, a light transmitting portion in the form of either a section of a strand like photoconductor, or an electrically operated bulb. The light transmitting portion is located, at least at the end of the connecting portion facing the grip sleeve, substantially centrally, whereby light can be transmitted along the photoconductive device, regardless of the rotational position adopted by the connecting portion relative to the grip sleeve.
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Bareth Erich
Loge Hans
Kaltenbach & Voigt GmbH & Co.
Wilson John J.
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