Valves and valve actuation – Fluid actuated or retarded – Dashpot or fluid controlled retarder or timer
Reexamination Certificate
2004-09-10
2011-10-18
Fristoe, Jr., John (Department: 3753)
Valves and valve actuation
Fluid actuated or retarded
Dashpot or fluid controlled retarder or timer
C251S129060
Reexamination Certificate
active
08038119
ABSTRACT:
A metering device has an actuating unit within a housing in which an actuator is inserted and a hydraulic compensating element. The hydraulic compensating element is connected to the actuator and can be filled with a fluid when subjected to pressure. A first end of the actuator is provided with a first end cap. The metering device further has a stop that is disposed on the housing in the form of a seat, faces the first end cap, and defines a stopping position for the first end cap. The stop maintains a maximum distance between a sealing element and the end cap, the distance being smaller than the actuator traveling distance such that the actuator stroke beyond the end cap is sufficient for opening the valve. The first end cap hits the stop when moving in the direction of the hydraulic compensating element such that the movement is blocked.
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Notification of International Search Report, International Search Report in German & English Translation of Search Report; PCT/EP2004/052130; 14 Pgs, Dec. 2004.
Written Opinion in German from PCT/EP2004/052130; 5 Pgs, Dec. 2004.
PCT International Search Report PCT/EP2004/052130, 2 pages, Dec. 14, 2004.
Bachmaier Georg
Fischer Bernhard
Gottlieb Bernhard
Kappel Andreas
Schwebel Tim
Fristoe, Jr. John
King & Spalding L.L.P.
Rost Andrew J
Siemens Aktiengesellschaft
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