Power plants – Pressure fluid source and motor – With control means for structure storing work driving energy
Patent
1988-02-26
1990-08-21
Garrett, Robert E.
Power plants
Pressure fluid source and motor
With control means for structure storing work driving energy
60448, 60450, 60452, 60489, F16H 6142, F16H 6146
Patent
active
049495410
ABSTRACT:
The apparatus for the feed and control of the speed and torque of a hydraulic motor having variable swept volume according to this invention comprises a hydraulic feed device for the motor, adapted for supplying the required flow rate of hydraulic fluid under all conditions at the working pressure, a constant pressure hydraulic control circuit associated with the hydraulic device or devices for varying the swept volume fo the motor, adapted for modifying the swept volume itself in relation to the pressure of the hydraulic fluid supplied to the motor, and a flow regulator valve with proportional control, piloted by an electronic regulator generating a control signal for the valve and receiving the signal of a sensor of the rotational speed of the motor and a reference signal.
REFERENCES:
patent: 3296797 (1967-01-01), Tlusty
patent: 3866420 (1975-02-01), Appel
patent: 3965682 (1976-06-01), Herchenroder
patent: 4011721 (1977-03-01), Yip
patent: 4503674 (1985-03-01), Backe et al.
patent: 4644748 (1987-02-01), Goss et al.
patent: 4644749 (1987-02-01), Somes
patent: 4710106 (1987-12-01), Iwata et al.
patent: 4712377 (1987-12-01), Yoshida et al.
patent: 4736585 (1988-04-01), Kordak
Dubno Herbert
Garrett Robert E.
Kapsalas George
Riva Calzoni S.p.A.
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