Fluid handling – Larner-johnson type valves; i.e. – telescoping internal valve...
Reexamination Certificate
2008-04-08
2008-04-08
Kirshnamurthy, Ramesh (Department: 3753)
Fluid handling
Larner-johnson type valves; i.e., telescoping internal valve...
Reexamination Certificate
active
10489578
ABSTRACT:
A pressure reducer has a housing comprising an inlet and an outlet in which a flow-around body is arranged in a flow channel connecting inlet and outlet. A flow restrictor is adjustably mounted relative to the flow-around body for varying a flow rate and is movably connected with an adjusting means comprising a recirculating ball nut and a rotating spindle wherein the rotating spindle is movably connected with said flow restrictor. To improve such a pressure reducer that a corresponding flow restrictor with a facilitated construction is reliable and can exactly be adjusted in position, the recirculating ball nut is detachably fastened to a turning sleeve rotatably mounted in the flow-around body and the recirculating ball nut is connected with a driving toothed wheel in a rotation-resistant manner, which is rotatable by an electric drive for the movable connected with recirculating ball nut.
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Patent Abstracts of Japan vol. 007, No. 126 (M-219) May 31, 1983 and JP 58 042873 (1 p.).
International Search Report for Appln. No. PCT/EP02/10487 dated Mar. 18, 2003 (pp. 8).
Cameron International Corporation
Conley & Rose, P.C.
Kirshnamurthy Ramesh
Schneider Craig
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