Dental hand-piece assembly with light-transmitting means

Abstract

Abstract 1. Dental handpiece arrangement having a first handpiece part (2), which is connected to a supply tube (4), and a second handpiece part (1), which, relative thereto, is rotatable freely, that is, over 360 degrees, about its longitudinal axis and can be easily separated therefrom, having guide elements (7, 25) which guarantee free rotatability of the second handpiece part (1), having a stop device (12, 13) which axially fixes the handpiece parts in the coupled state, having a receiving part (15), which is arranged coaxially between the two handpiece parts (2, 1) in the coupled state of the handpiece parts inside the second handpiece part (1), for an eccentrically arranged lamp (18) which, together with a light guide (24) arranged in a manner corresponding thereto and leading to the front end of the handpiece arragement, forms an illuminating device, in which, for the purpose of supplying current to the lamp, on the receiving part (15) and on the first handpiece part (2), which is fixed relative thereto, there are arranged on corresponding surfaces (35) contact means (26, 47, 49, 54, 55) which guarantee voltage transmission in each position of rotation of the parts, characterized in that the receiving part (15) is supported in a freely rotatable manner on the first handpiece part (2) which faces the supply tube (4) and in that both the receiving part (15) and the second handpiece part (1) lying opposite it contain, on corresponding surfaces of the coupling point, means (21, 22) which when the parts (1, 2, 3) are joined axially convert the axial movement into a rotary movement of the receiving part (15), whereby a positioning of the light exit point (19) of the lamp (19) on the receiving part (15) in relation to the light entry point (23) of the light guide (24) conducting the light further is effected in the second handpiece part (1).

Inventors

• 👤 Siegfried Dipl.-Ing. Goisser
• 👤 Werner Dipl.-Ing. Schuss
• 👤 Hermann Landgraf

Bibliographic Details