Periodontic tool with triangular vibration path

Details Periodontic tool with triangular vibration path Periodontic tool with triangular vibration path

1989-02-07

1991-03-26

Swiatek, Robert P.

Dentistry

Apparatus

Having motor or means to transmit motion from motor to tool

433118, 128 62A, A61O 107

Patent

active

050024876

ABSTRACT:
The tool has an elongated, at least partly hollow body including a handle portion and a free end adapted for carrying a periodontic end effector. A shaft, powered by a motor and rechargeable battery, rotates within the hollow portion. A fixed ring is mounted transversely in the hollow portion of the body, and a gear member is rotated by the shaft along the ring. An eccentric weight is carried by the gear member and is displaced so that the center of gravity of the eccentric weight follows a substantially triangular path as the gear member moves through one cycle. This vibrates the tool, and the end effector, in a substantially triangular path which achieves advantages in cleaning the tooth proximal surfaces by closely following the shape of the embrasure.

REFERENCES:
patent: Re31603 (1984-06-01), Christensen
patent: 3159859 (1964-12-01), Rasmussen
patent: 3466689 (1969-09-01), Aurelio et al.
patent: 3552022 (1971-01-01), Axelsson
patent: 3563233 (1971-02-01), Bodine
patent: 3919575 (1975-11-01), Weber et al.
patent: 3967617 (1976-07-01), Krolik
patent: 4173828 (1979-11-01), Lustig et al.

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