Dentistry – Apparatus – Having motor or means to transmit motion from motor to tool
Patent
1997-10-22
1999-05-11
Wilson, John J.
Dentistry
Apparatus
Having motor or means to transmit motion from motor to tool
433112, 433125, A61C1/12
Patent
active
059021071
ABSTRACT:
A disposable prophylaxis angle with an adjustable head having a body with a head, a drive gear extending through the body, and a driven gear extending through the head. The prophylaxis angle includes a body which has a portion thereof formed from a plurality of accordion folds for selective angular adjustment of the body. The drive gear includes a gear portion and a shaft portion for journaled rotation within the body. The driven gear includes a shaft portion mounted for journaled rotation within the head bore, and a gear portion operatively connected to the gear portion of the drive gear. The plurality of annular accordion folds allow for adjustment of the body in any radial direction. The shaft portion of the drive gear accommodates the angular adjustment of the prophylaxis angle by maintaining the operative connection between the gear part of the drive gear and the gear part of the driven gear. To accommodate the selected angular adjustment, the shaft portion of the drive gear comprises either: (1) a reduced diameter portion which allows the shaft to flex over a portion of its length, or (2) a shaft portion including a lower shaft part and an upper shaft part which are connected at a universal joint.
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Litman Richard C.
Wilson John J.
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