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:
May. 28, 1985
Filed:
Mar. 21, 1983
Kaltenbach & Voigt GmbH & Co., Biberach, DE;
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.