Dentistry – Apparatus – Having motor or means to transmit motion from motor to tool
Patent
1978-08-22
1980-08-12
Peshock, Robert
Dentistry
Apparatus
Having motor or means to transmit motion from motor to tool
433 82, A61C 108
Patent
active
042171016
ABSTRACT:
A dental handpiece having a holding sleeve, an air-driven unit mounted at one end of the sleeve to drive a dental tool, and a connecting member releasably and relatively rotatably connected to the other end of the sleeve. A supply hose for conveying fluid pressure media is coupled releasably and non-rotatably to the end of the connecting member remote from the sleeve, and communicating fluid pressure lines in the connecting member and in the sleeve convey fluid pressure media between the hose and consumers of fluid pressure media at the free end of the sleeve, such as the tool-drive unit. The releasable connection between the connecting member and the sleeve is provided by a pin on the connecting member which is received by a passage in the sleeve. The fluid pressure lines in the connecting member extend also generally lengthwise along the pin, but terminate in radial portions having outlet apertures which are axially spaced along the outer periphery of the pin. Each outlet aperture is located between a respective pair of seals engaging between the wall of the passage and the outer periphery of the pin, and communication with a corresponding fluid pressure line in the sleeve is established, when the pin is inserted into a releasable detent position in the passage, via an annular duct formed in the wall of the passage.
REFERENCES:
patent: 3894338 (1975-07-01), Loge et al.
patent: 4106796 (1978-08-01), Asztalos et al.
Kaltenbach & Voight GmbH & Co.
Peshock Robert
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