Dentistry – Apparatus – Having means to emit radiation or facilitate viewing of the...
Patent
1983-03-21
1985-05-28
Mancene, Gene
Dentistry
Apparatus
Having means to emit radiation or facilitate viewing of the...
433126, A61C 100
Patent
active
045197806
ABSTRACT:
There is disclosed a dental handpiece which mounts a dental implement at one end thereof, drive means provided in the handpiece to operate the dental implement, a connection piece pivotally connected to an opposite end of the handpiece so as to permit relative rotation between the handpiece and the connection piece, means provided in the connection piece to enable a handpiece-supply line to be coupled therewith, a light source, and a light guide having a light-receiving end arranged to receive light from the light source and a light-emitting end arranged to direct light to a treatment region adjacent to the dental implement. In order to avoid any impediment to operation of the handpiece caused by the presence of the light guide, the light guide is arranged to extend within the handpiece and the connection piece. Further, the light guide is transversely divided into first and second guide portions in the region of the connection between the handpiece and the connection piece, and the first guide portion extends within the connection piece and terminates in the connection region between the handpiece and the connection piece, and the second guide portion extends from this connection region within the handpiece towards the implement end. To provide for transmission of light between the first and second guide portions, despite relative rotation taking place between the handpiece and the connection piece, a pair of light transmitting rings are provided, one being arranged in the connection piece to co-operate with the first guide portion and the other being arranged in the handpiece to co-operate with the second guide portion.
REFERENCES:
patent: 4398885 (1983-08-01), Loge et al.
patent: 4403956 (1983-09-01), Nakanishi
patent: 4406621 (1983-09-01), Bailey
Reich Heinrich
Strohmaier Ernst
Wagner Bernd
Kaltenbach & Voigt GmbH & Co.
Mancene Gene
Weiss John G.
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