Dental percussion instrument

Dentistry – Apparatus – Having motor or means to transmit motion from motor to tool

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Details

A61C 308

Patent

active

046890114

ABSTRACT:
A dental percussion instrument, which has a instrument housing fashioned as a handpiece, a ram with a test head at one end being mounted in the housing for movement between a retracted and an extended position and an electromagnetic drive for shifting the ram between said positions, characterized by the ram having essentially a constant cross-section over its entire length, a permanent magnet being secured to the other end of the ram opposite the test head and the magnetic coil of the drive being rigidly situated in the instrument housing in a portion spaced axially from the other end of the ram and the permanent magnet.

REFERENCES:
patent: 3377704 (1968-04-01), Brodie et al.
patent: 4482324 (1984-11-01), Wohlgemuth
patent: 4499906 (1985-02-01), Wohlgemuth et al.

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