Fluid handling – Systems – Valves with separate – correlated – actuators
Patent
1980-03-17
1982-05-18
Michalsky, Gerald A.
Fluid handling
Systems
Valves with separate, correlated, actuators
91424, 13759616, F15B 13043, F15B 2000
Patent
active
043300138
ABSTRACT:
Means for sensing a discrepant position between two normally closed valves of a double valve assembly used to control an industrial machine such as an air-operated press clutch and brake. The indicating means comprises switch means responsive to the movement of each of the valves and so positioned that the switch means is actuated very close to the closed position of each valve. The switch means controls power to solenoid-operated pilot valves for the two main control valves of the double valve assembly. By controlling the switch means immediately adjacent the closed valve positions, the safe or closed part of the cycle is monitored for these valves, which are in themselves stable because of their normally closed nature. The switch means may be either cam-operated mechanical switches, proximity switches, photoelectric sensors, or contacts directly engageable by the inlet valve elements and utilizing the valve body itself as part of the electrical circuit. The invention is applicable to a double valve assembly in which both inlet and exhaust flow is in parallel through the two valves, or one in which the inlet flow is in series and the exhaust flow in parallel.
REFERENCES:
patent: 2636581 (1953-04-01), Bitler
patent: 3135289 (1964-06-01), Jordan
Michalsky Gerald A.
Ross Operating Valve Company
LandOfFree
Valve safety indicating means does not yet have a rating. At this time, there are no reviews or comments for this patent.
If you have personal experience with Valve safety indicating means, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Valve safety indicating means will most certainly appreciate the feedback.
Profile ID: LFUS-PAI-O-482580