Fluid handling – Systems – Multi-way valve unit
Reexamination Certificate
2005-05-03
2005-05-03
Fox, John (Department: 3753)
Fluid handling
Systems
Multi-way valve unit
C251S118000
Reexamination Certificate
active
06886598
ABSTRACT:
Flow enhancing restrictors are located within a fluid conduit to provide pressure reduction and flow enhancement. The restrictors may be used in combination with a conventional choke valve or as a stand-alone pressure reduction means. Alternative exemplary embodiments for flow enhancers are described. Each of the flow enhancers has a generally cylindrical base with at least one fluid passage disposed therethrough. Each of the flow enhancers also provides a dome that projects upwardly from the center of the base to assist in directing fluid flow and receiving the abrasive forces associated with the fluid.
REFERENCES:
patent: 3693329 (1972-09-01), Willis
patent: 4244440 (1981-01-01), Matta et al.
patent: 4466741 (1984-08-01), Kojima
patent: 4747697 (1988-05-01), Kojima
patent: 4839038 (1989-06-01), McLain, II
patent: 5312083 (1994-05-01), Ekman
patent: 5529093 (1996-06-01), Gallagher et al.
patent: 5575561 (1996-11-01), Rohwer
patent: 5664760 (1997-09-01), Army, Jr. et al.
patent: 5988586 (1999-11-01), Boger
Richter, R: “Hochverschleissfeste Stellventile”, VGB Kraftwerkstechnik, VGB Kraftwerkstechnik GMBH. Essen, De, vol. 77, No. 6, Jun. 1, 1997, pp. 476-480, XP000656701, ISSN: 0372-0575, Figure 2 (Translation of relevant portions of reference included).
Bracewell & Patterson LLP.
Fox John
Wood Group Pressure Control Limited
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