Dry-running piston rod sealing arrangement, and method for...

Seal for a joint or juncture – Process of dynamic sealing – Close proximity seal

Reexamination Certificate

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Details

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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