Self-compensating seal for a rotating shaft
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United States of America Patent
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-
Feb 26, 1991
Grant Date -
N/A
app pub date -
Jan 3, 1989
filing date -
Jan 3, 1989
priority date (Note) -
Expired
status (Latency Note)
Importance
Abstract
A self-compensating seal for a rotating shaft includes a seal ring (13) having a plurality of trapezoidal and/or triangular shaped seal sections (15). A ring housing (22) is affixed to a shaft (12) and engages the inside trailing edge (20) of the seal ring (13). Means (30, 31) are provided to prohibit circumferential rotational movement of the seal ring (13) within the ring housing (22). The ring housing (22) and the seal ring (13) rotate with the shaft (12). The centrifugal forces generated by the rotation causes the seal sections (15) to move outward from the ring housing (22) and toward a wear plate (24). Engagement of the outside leading edge (21) of the seal ring (13) and the wear plate (24) perfects the seal.
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