The patent badge is an abbreviated version of the USPTO patent document. The patent badge does contain a link to the full patent document.
The patent badge is an abbreviated version of the USPTO patent document. The patent badge covers the following: Patent number, Date patent was issued, Date patent was filed, Title of the patent, Applicant, Inventor, Assignee, Attorney firm, Primary examiner, Assistant examiner, CPCs, and Abstract. The patent badge does contain a link to the full patent document (in Adobe Acrobat format, aka pdf). To download or print any patent click here.
Patent No.:
Date of Patent:
Aug. 16, 1983
Filed:
Aug. 25, 1981
Hans Loge, Biberach, DE;
Erich Bareth, Ummendorf, DE;
Kaltenbach & Voigt GmbH & Co., Biberach an der Riss, DE;
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.