Fluid handling – With indicator – register – recorder – alarm or inspection means – Position or extent of motion indicator
Patent
1980-05-05
1981-12-22
Nilson, Robert G.
Fluid handling
With indicator, register, recorder, alarm or inspection means
Position or extent of motion indicator
1376275, 251 14, 251 94, F16K 1110
Patent
active
043065864
ABSTRACT:
A three way relay valve has a body defining a bore and first and second chambers, a supply port in fluid communication with the first chamber, and valve and exhaust ports in fluid communication with the second chamber. A plunger is moveably disposed within the bore and extends from the third chamber into the second chamber and a passageway being provided in the plunger for placing the valve port in fluid communication within the body to selectively block fluid communication between the first and second chambers or to block fluid flow through the passageway in the plunger and thereby block fluid communication between the valve and exhaust ports. The valve has a manual reset apparatus and a lock-out device to facilitate actuation of the valve after pilot pressure has been lost.
REFERENCES:
patent: 2656014 (1953-10-01), Fites
patent: 2959426 (1960-11-01), Augustin
patent: 3451423 (1969-06-01), Priese
patent: 3559688 (1971-02-01), Fischer
patent: 3617097 (1971-11-01), Grabb
patent: 4103864 (1978-08-01), Hagendorn
Booth John F.
Crutsinger Gerald G.
Nilson Robert G.
Ross Monty L.
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