Fluidic control assembly for dental tools

Details Fluidic control assembly for dental tools Fluidic control assembly for dental tools

1987-11-02

1989-02-21

Peshock, Robert

Dentistry

Apparatus

Having condition sensor to transmit signal to regulate...

A61C 1902

Patent

active

048060992

ABSTRACT:
A fluidic control assembly for controlling the supply of drive air and/or water to a tool such as a dental handpiece in response to its presence or absence in a hanger in which it is removably stored. The assembly comprises a primary fluidic control and a secondary control, with the primary fluidic control having a control valve which directs the flow of drive air from a source of supply through a primary chamber to a main outlet coupled to the handpiece. The control valve extends into a secondary chamber having means for operating the control valve in response to a predetermined pressure level in the secondary chamber. The secondary chamber communicates with the secondary control, which is integrated in the hanger for sensing the presence or absence of the tool in the hanger. The secondary control causes a build-up of pressure in the secondary chamber when the tool is absent from the hanger and causes the pressure in the secondary chamber to drop below the predetermined level when the tool is present.

REFERENCES:
patent: 3638310 (1972-01-01), Austin
patent: 4069587 (1978-01-01), Peralta
patent: 4117861 (1978-10-01), Betush
patent: 4230452 (1980-10-01), Austin

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