Dental instrument heater

Electric heating – Heating devices – Tool or instrument

Patent

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Details

219240, 219242, 219234, 320 40, 320 48, 320 2, 340636, 433 32, H05B 100

Patent

active

044410131

ABSTRACT:
A dental instrument heater having a pair of contact blades connected to a battery. The contact blades have notches formed along their respective edges, and they are mounted in parallel, spaced-apart relationship to each other. Consequently, a dental instrument may be positioned between adjacent notches so that electric current from the battery flows through and heats the dental instrument. The heating device includes a self-contained charging circuit which connects an external charger to the battery when the battery voltage is below a predetermined value, and it disconnects the charger from the battery when the battery voltage reaches a predetermined level.

REFERENCES:
patent: 1092307 (1914-04-01), Talbott
patent: 2140817 (1938-12-01), Springall
patent: 2477887 (1949-08-01), McMillan
patent: 2511192 (1950-06-01), Barroso
patent: 3289065 (1966-11-01), Dehmelt
patent: 3390252 (1968-06-01), Storck
patent: 3553561 (1971-01-01), Lesher
patent: 3560704 (1971-02-01), Albert
patent: 3890555 (1975-06-01), Nelson
patent: 4021639 (1977-05-01), Espino
patent: 4354092 (1982-10-01), Manabe

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