Dentistry – Apparatus – Having condition sensor to transmit signal to regulate...
Patent
1981-06-25
1983-03-08
Peshock, Robert
Dentistry
Apparatus
Having condition sensor to transmit signal to regulate...
A61C 102
Patent
active
043759637
ABSTRACT:
A control unit is provided for supporting a multiplicity of dental handpieces of the high-pressure air-driven type, and which includes a plurality of holders for removably supporting the individual handpieces. Each of the holders is mounted on one end of a corresponding arm. The other end of the arm serves as a pinch block. Each arm is pivotally mounted on the frame of the control unit. An actuator is mounted on the frame of the control unit adjacent to each holder, and when a handpiece is inserted into the corresponding holder it engages the actuator and forces the corresponding arm to turn and to move, together with the holder and handpiece, to a down position. The other end of the arm then pinches one or more flexible tubes against a pinch bar in the control unit when the holder is forced to its down position. This action serves to cut off the supply of high pressure air to the handpiece, so that the high pressure air flows to the selected handpiece to drive the handpiece only when the holder is in its up position. As will be described, the control unit may also be used to control the flow of water to the selected handpiece to be directed onto the tooth being treated for cooling purposes.
REFERENCES:
patent: 3986262 (1976-10-01), Casillas
patent: 4117861 (1978-10-01), Betush
Beecher Keith D.
Peshock Robert
Progressive Machine Products
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