Dentistry – Apparatus – Having motor or means to transmit motion from motor to tool
Reexamination Certificate
2006-11-28
2006-11-28
Manahan, Todd E. (Department: 3732)
Dentistry
Apparatus
Having motor or means to transmit motion from motor to tool
C415S904000
Reexamination Certificate
active
07140880
ABSTRACT:
The invention relates to a medical or dental-medical handpiece having a rotary part which is rotatably mounted in a bearing bush by means of a roller bearing having an inner ring and an outer ring. In order to improve the handpiece with regard to an axial limiting of the roller bearing there is arranged in the inner surface of the bearing bush or in the outer surface of the outer ring a first ring groove in which there sits a securing ring which projects out of the first ring groove and bears at least with its one side on a shoulder surface of the respective radially oppositely lying part.
REFERENCES:
patent: 4231739 (1980-11-01), Iudica
patent: 4249896 (1981-02-01), Kerfoot, Jr.
patent: 4941828 (1990-07-01), Kimura
patent: 5507642 (1996-04-01), Wohlgemuth
patent: 5676542 (1997-10-01), Lingenhole et al.
patent: 5779474 (1998-07-01), Gonser
patent: 6120291 (2000-09-01), Bareth et al.
patent: 690226 (2000-06-01), None
patent: 1316974 (1963-02-01), None
patent: WO 01/01879 (2001-01-01), None
International Search Report in PCT/EP02/08933 dated Nov. 5, 2002.
Kaltenbach & Voigt GmbH & Co.
Manahan Todd #E.
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