Dental handpiece for a motor driven reamer

Details Dental handpiece for a motor driven reamer Dental handpiece for a motor driven reamer

1975-01-27

1976-07-20

Peshock, Robert

32 57, A61C 110

Patent

active

039698238

ABSTRACT:
A cylindrical member of the present dental handpiece is provided with a cup bearing held into an opening adjacent its upper end and also with an annular bearing disposed into said opening adjacent its lower end. A metallic member having a substantially inclined bottom face is secured to the cup bearing. A top end face of a bushing having a worm wheel is coincidentally inclined to fit to said inclined bottom face of the metallic member so as to form a cam mechanism. The bushing is formed with an annularly widened opening therein adjacent its lower end to receive a collet chuck and also a screw thread around said bushing, which is rotatably inserted into the cylindrical member through the cup and annular bearings. A reamer is firmly held into the bushing through a collet chuck, and a worm gear is associated with the worm wheel. According to the dental handpiece, the reamer is driven to rotate slowly once at its each vertical mot motion, enabling to carry out a finger touch operation.

REFERENCES:
patent: 3579833 (1971-05-01), Colombo

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