Electricity: motive power systems – Generator-fed motor systems having generator control – Automatic generator control and/or with time-delay means
Patent
1998-08-03
1999-11-02
Ro, Bentsu
Electricity: motive power systems
Generator-fed motor systems having generator control
Automatic generator control and/or with time-delay means
318145, 318158, 361145, 414606, 414737, H02P 910, B66C 108
Patent
active
059777303
ABSTRACT:
A hydraulic circuit (124) is defined in a manifold (130) which may be aluminum, steel, or any other suitable material. The circuit (124) regulates the flow of hydraulic fluid to the hydraulic motor (120) and thus ensures that the motor rotates at an essentially constant speed, independent of the speed of the hydraulic pump (122) supplying the circuit. The circuit includes a pressure compensated flow control valve assembly (140) with an adjustable flow control valve (142) that regulates the flow of hydraulic fluid to the motor (120). The assembly (140) also includes a balanced piston-type pressure compensator (144) that ensures a select pressure differential across the flow control valve (142) such that the flow through the valve (142) remains at least essentially constant. This constant flow through the pressure compensated flow control valve assembly (140) ensures an essentially constant rotational speed of the motor (120). A surge suppression/protection normally closed solenoid operated valve (180) is provided to prevent undesirable surges of hydraulic fluid during start-up of the motor.
REFERENCES:
patent: 2622750 (1952-12-01), Ehlers
patent: 3561541 (1971-02-01), Woelfel
patent: 3883783 (1975-05-01), Fuzzell
patent: 4323329 (1982-04-01), Chlad
patent: 4600349 (1986-07-01), Vogt
patent: 5141402 (1992-08-01), Bloomquist et al.
patent: 5570581 (1996-11-01), Preston
Chlad Kenneth J.
Clutter Ronald W.
Cooper Timothy L.
Robinson Charles A.
Buck, II Byron G.
Caterpillar Inc.
Ro Bentsu
LandOfFree
Method and apparatus for controlling the flow of hydraulic fluid does not yet have a rating. At this time, there are no reviews or comments for this patent.
If you have personal experience with Method and apparatus for controlling the flow of hydraulic fluid, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Method and apparatus for controlling the flow of hydraulic fluid will most certainly appreciate the feedback.
Profile ID: LFUS-PAI-O-2139976