Fluid handling – With repair – tapping – assembly – or disassembly means – Assembling – disassembling – or removing cartridge type valve
Patent
1977-05-31
1979-01-23
Schwadron, Martin P.
Fluid handling
With repair, tapping, assembly, or disassembly means
Assembling, disassembling, or removing cartridge type valve
60413, 91417A, 92134, 251 635, F16k 4300, F16k 31124
Patent
active
041355474
ABSTRACT:
An actuator is provided which is respondable to control fluid pressure for moving an operative means of a valve between open and closed positions. The actuator comprises a housing defining a cylindrical bore therewithin. In one form, a shaft is carried in the housing and is engagable with the operative means. Means define first and second effective piston areas and are carried by one of the shaft and the housing and are sealingly slidable along the other of the shaft and the housing, being longitudinally movable within the cylindrical bore. The apparatus has first and second fluid chambers companionly associated with the means defining the first and second effective piston areas within the bore for yielding a differential force across the means defining the first and second effective piston areas upon increase of fluid control pressure within the actuator. A continuously chargeable fluid accumulator means is in fluid communication with the second fluid chamber for storage of energy defined by fluid, preferably control fluid, compressible therein. Fluid passage means for transmitting fluid under pressure is provided to said first fluid chamber and to said accumulator means. Valve means ae movable between open and closed positions and communicate between the accumulator means and the fluid passage means to permit fluid control pressure changing of the accumulator chamber when the valve is in the open position and for preventing discharge of fluid pressure within the accumulator chamber when the valve is in the closed position. The valve is responsive to pressure differential between the accumulator chamber and the fluid passage means. The shaft is selectively shiftable longitudinally in a first direction to move the operative means to one of open and closed position by variation in fluid control pressure, and is shiftable to a second direction to move the operative means to the other of the open and closed positions upon subsequent variation in fluid control pressure. One of the shaft and operative means has slotted means thereon for transverse receipt of a companion engagement means on the other of the shaft and the operative means whereby the operative means and the shaft are thereafter in substantial longitudinal engagement point. The shaft and the operative means are disengageable by relative transverse shifting of the shaft and the operative means to remove the actuator from the valve.
REFERENCES:
patent: 228210 (1880-06-01), Meier
patent: 301761 (1884-07-01), Senna
patent: 2099368 (1937-11-01), Levy
patent: 3248879 (1966-05-01), Natho
patent: 3290003 (1966-12-01), Kessler
patent: 3434393 (1969-03-01), Cairatti
patent: 3570244 (1971-03-01), Strobel et al.
patent: 4036106 (1977-07-01), Athy, Jr.
Akkerman Neil H.
Foster Stephen R.
Baker International Corporation
Norvell, Jr. William C.
Schwadron Martin P.
Walton G. L.
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