Shaft sealing ring
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United States of America Patent
Stats
-
Feb 22, 2005
Grant Date -
Dec 18, 2003
app pub date -
May 20, 2003
filing date -
May 21, 2002
priority date (Note) -
Expired
status (Latency Note)
Importance
Abstract
A shaft sealing ring, comprising an elastic sealing lip which has a sealing edge in engagement with a circumferential surface of a shaft which rotates relative to the shaft sealing ring, further comprising at least two sinusoidally curved helical elements having the same amplitudes and wavelengths which are provided on a sealing lip surface facing the surroundings and serve to convey medium that has escaped to the side of the surroundings back over the sealing edge to the side of the medium of the shaft sealing ring, the helical elements being arranged phase-shifted with respect to each other in circumferential direction and merging tangentially in circumferential direction into the sealing edge is characterized in that the ratio between the wavelength L and the amplitude A of the sinusoidally curved helical elements fulfills the relationship
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Cited Art Landscape
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