Patent ID: 9017073
Filing Date: 2015-04-28
Classification: A61C,Y10T

Abstract:
1. A dental prophylaxis angle, comprising: a body having a neck that defines a first axial bore and a head that defines a second axial bore, the first and second axial bores communicating at an intersection and being angularly-offset from each other, and the body defining an opening that spans contiguous portions of both the neck and the head; a drive gear rotatably mounted in the first axial bore and having a drive gear head and a locking flange axially-offset from the drive gear head, an annular locking groove being defined between the drive gear head and the locking flange; a driven gear rotatably mounted in the second axial bore and operatively coupled to the drive gear; and a gear retainer having an annular body that defines an inner circumferential surface of the gear retainer configured to extend about an outer circumferential surface of the head, a heel extending from the annular body, an arm extending from the heel, and a wedge extending from the arm, wherein the heel and the arm are cooperatively configured to cover the opening and the wedge is configured to be received in the annular locking groove.