Electricity: motive power systems – Automatic and/or with time-delay means – Movement – position – or limit-of-travel
Patent
1988-02-16
1990-02-20
Ro, Bentsu
Electricity: motive power systems
Automatic and/or with time-delay means
Movement, position, or limit-of-travel
318266, 25112901, 25112904, F16K 3104
Patent
active
049029452
ABSTRACT:
A variable electric control controls hydraulic speed control valves. The control includes a reversible DC electric motor coupled to a speed control valve, a detection circuit for detecting the degree to which the valve is opened, and indicator lights for indicating that degree. Electrical limit switches automatically shut off the motor as the valve fully opens or fully closes. A dual-pole, dual-throw actuator switch located at a position remote from the valve controls the electric motor. The indicator lights are located near the actuator switch. The detection circuit, the motor, and the coupling between the valve and the motor are preferably sized and arranged to be positioned on the housing of the valve and, when so positioned, to not extend, in plan, beyond the housing.
REFERENCES:
patent: 2662547 (1953-12-01), Comeau
patent: 3196900 (1965-07-01), Catheron et al.
patent: 3199012 (1965-08-01), Harris
patent: 3258985 (1966-07-01), Jordan
patent: 3394292 (1968-07-01), Flum
patent: 3808484 (1974-04-01), Trotta
patent: 3914676 (1975-10-01), Madonian et al.
patent: 4097786 (1978-06-01), Lund
patent: 4429705 (1984-02-01), Ritchart
patent: 4455012 (1984-06-01), Gupta
patent: 4538789 (1985-09-01), An
patent: 4556832 (1985-12-01), Rollins
patent: 4611617 (1986-09-01), Hewitt
patent: 4621789 (1986-11-01), Fukamachi
patent: 4624280 (1986-11-01), DePirro
patent: 4694390 (1987-09-01), Lee
patent: 4816987 (1989-03-01), Brooks et al.
Meades, III Flavious J.
Meades, Jr. Flavious J.
LandOfFree
Electrical control for hydraulic valves does not yet have a rating. At this time, there are no reviews or comments for this patent.
If you have personal experience with Electrical control for hydraulic valves, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Electrical control for hydraulic valves will most certainly appreciate the feedback.
Profile ID: LFUS-PAI-O-1618216