Fluid handling – Systems – Supply and exhaust
Patent
1977-10-13
1980-01-08
Michalsky, Gerald A.
Fluid handling
Systems
Supply and exhaust
137456, 251 634, F15B 13042, F16K 31122
Patent
active
041823699
ABSTRACT:
Valve means associatable with free traveling spherical means are sealing engageable onto and wipable off of companion seats to selectively control flow. A spool permits selective movement of the head means to the seat means and selective engagement of the head and seat means upon shuttling.
An interface assembly comprises means which are extendible to the spool and a piston head element within the housing and carried around an extension for travel along the extension in response to pressure variation. The piston head is shiftable in a first direction in response to fluid variation for travel along the extension for transfer of the spherical means within the piston from one camway to another camway without movement of the spool within the housing. The piston head is shiftable in a second direction in response to second pressure variation for interface with the spherical elements carried in the piston with a shoulder and carriage of the spool to shift the spool to another position to vary the fluid flow path through the spool valve.
The apparatus may be used to manipulate, for example, a downhole safety valve between open and closed position in response to signal variation indicating abnormal well flow, or the like.
REFERENCES:
patent: 2574335 (1951-11-01), Leduc
patent: 3007492 (1961-11-01), Grimmer
patent: 3053279 (1962-09-01), Likely et al.
patent: 3823739 (1974-07-01), McMullan
Baker CAC, Inc.
Michalsky Gerald A.
Norvell, Jr. William C.
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