Valves and valve actuation – With means to increase head and seat contact pressure – Spring
Reexamination Certificate
2011-02-08
2011-02-08
Bastianelli, John (Department: 3753)
Valves and valve actuation
With means to increase head and seat contact pressure
Spring
C251S214000, C251S337000, C277S522000
Reexamination Certificate
active
07883073
ABSTRACT:
Methods and apparatus for adjusting a spring load in an actuator are described. An example actuator includes a housing and a plate. Further, the example actuator includes one or more springs disposed in the housing to apply a force to the plate. Additionally, the example actuator includes a spring load adjuster having a collar extending through and movably engaged to the plate to enable an adjustment of the position of the collar relative to the plate to change a load provided by the one or more springs.
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UK Intellectual Property Office, “UK Search Report” issued in connection with counterpart Great Britain Patent Application No. GB0823281.1, mailed Apr. 23, 2009, 3 pages.
Natili, Jr. Richard Peter
Sinka Steven Paul
Bastianelli John
Emerson Process Management Power and Water Solutions, Inc.
Hanley, Flight and Zimmerman, LLC
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