Seal for a joint or juncture – Process of dynamic sealing – Close proximity seal
Reexamination Certificate
2005-10-24
2010-10-19
Pickard, Alison K (Department: 3676)
Seal for a joint or juncture
Process of dynamic sealing
Close proximity seal
C277S317000, C277S413000, C277S581000, C277S545000, C277S470000
Reexamination Certificate
active
07815193
ABSTRACT:
The invention relates to a dry-running piston rod sealing arrangement (1) for sealing a piston rod (2) mounted in a longitudinally displaceable manner. The sealing arrangement comprises at least one sealing ring (5) having a sealing surface (5a), an actuator (7), a sensor (8), and a chamber ring (3) containing the sealing ring (5). The actuator (7) comprises an active connection in relation to the sealing ring (5), such that the sealing surface (5a) can be radially displaced in relation to the piston rod (2). The actuator (7) can be controlled according to a measuring value detected by the sensor (8).
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Feistel Norbert
Samland Georg
Burckhardt Compression AG
Pickard Alison K
Townsend and Townsend / and Crew LLP
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