Dental handpiece with improved grease retention

Details Dental handpiece with improved grease retention Dental handpiece with improved grease retention

A - Human Necessities

61

C

A61C 1/08 (2006.01) A61C 1/18 (2006.01) F01M 11/04 (2006.01) F16C 1/24 (2006.01) F16C 33/38 (2006.01) F16C 33/66 (2006.01) F16N 11/00 (2006.01) A61C 1/14 (2006.01)

Patent

CA 2477167

A dental handpiece (10) has a rotor (15) and a ball bearing assembly (13, 14) supporting the rotor (15). At least one of the ball bearing assemblies (13, 14) has a ball (20) and a retainer (21). The retainer (21) has at least one grease retaining groove (30, 50) or void (51) therein.

L'invention concerne une pièce à main dentaire (10) dotée d'un rotor (15) et d'un ensemble de roulement à billes (13, 14) soutenant le rotor (15). Au moins un des ensembles de roulement à billes (13, 14) est doté d'une bille (20) et d'une retenue (21). Cette retenue (21) présente au moins une rainure (30, 50) ou une cavité (51) de retenue de graisse.

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