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 1/18 (2006.01) F16C 33/66 (2006.01) F16N 11/00 (2006.01) A61C 1/05 (2006.01) A61C 1/06 (2006.01)

Patent

CA 2709405

A dental handpiece has a rotor assembly (10) with a rotor (15a) and two ball bearing assemblies (13, 14) supporting a rotor (15a). 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 ayant un ensemble de rotor (10) muni d'un rotor (15a) et de deux ensembles de palier à bille (13, 14) portant le rotor (15a). Au moins un des ensembles de palier à bille (13, 14) présente une bille (20) et un élément de retenue (21). L'élément de retenue (21) possède au moins une rainure (30, 50) ou un vide (51) de retenue de graisse agencé dans celui-ci.

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