Pressure-responsive speed control for dental handpieces

Details Pressure-responsive speed control for dental handpieces Pressure-responsive speed control for dental handpieces

1976-02-12

1978-02-21

Peshock, Robert

A61C 110

Patent

active

040744345

ABSTRACT:
A speed control system for dental handpieces in which a sleeve or tube of pliable material defines an elongated deformable passage. The passage communicates at one end with a source of gas (air) under pressure and, at its opposite end, is vented to discharge a continuous stream of gas whenever the unit is in operation. When the resilient sleeve is squeezed anywhere along its length, back pressure is created which acts upon a pressure-responsive pilot valve, the pilot valve in turn regulating the speed of the dental handpiece in accordance with the amount of back pressure developed.

REFERENCES:
patent: 3568318 (1971-03-01), Martin
patent: 3842504 (1974-10-01), Ricks

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