Light control apparatus for a dental handpiece

Details Light control apparatus for a dental handpiece Light control apparatus for a dental handpiece

1977-12-22

1979-10-23

Mancene, Louis G.

Communications: electrical

Land vehicle alarms or indicators

Internal alarm or indicator responsive to a condition of the...

32DIG7, 32DIG3, 3403091, 362 4, 362 32, 137225, 307141, 251 22, A61C 110, G08B 100, H01V 100

Patent

active

041715721

ABSTRACT:
An apparatus for controlling the actuation of a light for illuminating the work zone adjacent the operative end of a dental handpiece. The apparatus includes (a) switch for actuating a light source when a signal is transmitted to the actuating switch from the power transmitting line for the dental handpiece, (b) line for transmitting the signal to the actuating switch from the power transmitting means for the handpiece, and (c) delay shutoff switch associated with the actuating switch for maintaining the light source on for a predetermined period of time after transmission of power to the operative end of the handpiece is terminated and then causing the light source to be extinguished at the end of the predetermined period of time.

REFERENCES:
patent: 2539828 (1951-01-01), Goldis
patent: 3590232 (1971-06-01), Sadowski
patent: 3739373 (1973-06-01), Liming et al.
patent: 3806081 (1974-04-01), Otto
patent: 3965465 (1976-06-01), Alexander
patent: 4053756 (1977-10-01), Takahashi
patent: 4060724 (1977-11-01), Heine et al.
patent: 4082961 (1978-04-01), Genuit

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