Operating mechanism for a hydraulic actuator having a pressure-p

Details Operating mechanism for a hydraulic actuator having a pressure-p Operating mechanism for a hydraulic actuator having a pressure-p

1993-12-21

1995-07-25

Lopez, F. Daniel

Motors: expansible chamber type

With signal, indicator or inspection means

91442, F01B 3112

Patent

active

054352274

ABSTRACT:
This operating mechanism for a hydraulic actuator (2) having a pressure-proportional actuating signal is provided with an amplifier (33) for electric signals, with at least one electrohydraulic transducer (24) connected upstream of the hydraulic actuator (2) and with a hydraulic discharge amplifier connected between the electrohydraulic transducer (24) and the actuator (2). The aim is to provide an operating mechanism for a hydraulic actuator having a pressure-proportional actuating signal which can be produced simply and cost-effectively. This is achieved by interconnecting between the actuator (2) and the hydraulic discharge amplifier a piston/cylinder arrangement (4) acting as a transducer.

REFERENCES:
patent: 4274438 (1981-06-01), La Coste
patent: 4585205 (1986-04-01), Coppola et al.
patent: 5031506 (1991-07-01), Baisch et al.
patent: 5137253 (1992-08-01), Frey et al.
Handbook of Applied Instrumentation, New York, McGraw-Hill Book Company, 1964 pp. 4-15, 4-19, TA 165.C65h.

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