Dental handpiece control

Details Dental handpiece control Dental handpiece control

1974-09-23

1976-06-08

Nilson, Robert G.

Fluid handling

Self-proportioning or correlating systems

Flow rate responsive

32 28, A61C 105

Patent

active

039616401

ABSTRACT:
A dental handpiece control in which a single housing for controlling the flow of air and water to a dental handpiece is combined with a foot pedal. In the housing is a pressure regulator directly operated by the foot pedal and a water valve controlled by air from the pressure regulator. A switching valve operated by push buttons adjacent the foot pedal controls the flow of air to the water valve, the operation of the push buttons determining whether the handpiece is operated on an air mode or an air/water mode. The water valve is designed to eliminate drip when the instrument is shut off by drawing water from the handpiece toward the control unit upon relief of air pressure from the water valve.

REFERENCES:
patent: 3129511 (1964-04-01), Williams
patent: 3237306 (1966-03-01), Staunt
patent: 3875958 (1975-04-01), Miller

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