Drive control circuit for dental treatment table

Details Drive control circuit for dental treatment table Drive control circuit for dental treatment table

1981-03-31

1983-12-20

Rosenthal, Arnold

Power plants

Pressure fluid source and motor

Condition responsive control of or by input to input pump...

60434, F16D 3102

Patent

active

044209363

ABSTRACT:
A drive control circuit for a dental treatment table with a hydraulic cylinder for elevating and lowering a seat comprising a hydraulic drive circuit equipped with a hydraulic pump, a first hydraulic valve for elevating said cylinder, and a second hydraulic valve for lowering said cylinder, and a hydraulic pump operation circuit equipped with an air switch, a first air valve for controlling said air switch and said hydraulic valve for elevating said cylinder, and a second valve for controlling said hydraulic valve for lowering said cylinder. The drive control circuit may further comprise a second cylinder for tilting a backrest which can be controlled by the hydraulic drive circuit and the hydraulic pump operation circuit.

REFERENCES:
patent: 3124371 (1964-03-01), Weir
patent: 3310942 (1967-03-01), Stanford
patent: 3910045 (1975-10-01), Herrmann

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