Dental handpiece having non-contact rotational speed detection d

Details Dental handpiece having non-contact rotational speed detection d Dental handpiece having non-contact rotational speed detection d

1982-12-30

1985-01-15

Mancene, Gene

Dentistry

Apparatus

Having condition sensor to transmit signal to regulate...

433114, 433131, 324174, A61C 100, A61C 300

Patent

active

044936435

ABSTRACT:
A dental handpiece having therein a non-contact rotating speed detection device which includes an electromagnetic induction pulse generator including a permanent magnet provided close to the rotor in the head of a dental handpiece and a coil wound around the permanent magnet, and a rotor made of a magnetic material provided with recesses and/or projections around its circumference. The handpiece according to the invention facilitates to accurately detect rotor speed by detecting a pulse voltage proportionate to the rotation speed and therefore is useful for dental treatment and experiments.

REFERENCES:
patent: 4153993 (1979-05-01), Kataoka et al.
patent: 4288746 (1981-09-01), Singbartl

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