Valve arrangement for hand-operated dental tools

Details Valve arrangement for hand-operated dental tools Valve arrangement for hand-operated dental tools

1988-04-28

1989-09-05

Wilson, John J.

Dentistry

Apparatus

Having condition sensor to transmit signal to regulate...

433 98, A61C 102

Patent

active

048633798

ABSTRACT:
The invention relates to a valve arrangement for controlling the flow of pressurized air, water and/or other media to at least one hand-operated tool, preferably an instrument for dental work. The valve arrangement includes for each tool a valve for each medium. According to the invention, each valve comprises a first valve part and a second valve part, those valve parts being arranged for relative movement between an open and a closed psoition under the influence of actuating means and further comprises a flexible hose connected at respective ends to the two first and second valve parts. When the valve parts occupy their valve-closed position, the part of the hose located between the two valve parts is folded so as to exhibit a flow-inhibiting fold or kink, whereas when the valve parts occupy their valve-open positions the flow-inhibiting fold is no longer present in the hose.

REFERENCES:
patent: 3742606 (1973-07-01), Fleer et al.
patent: 3959882 (1976-06-01), Rackson
patent: 3982322 (1976-09-01), Fleer
patent: 4375963 (1983-03-01), Betush
patent: 4450862 (1984-05-01), Hogan

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