Circumferential seal assembly with multi-axis stepped grooves

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United States of America Patent

PATENT NO 11732753
APP PUB NO 20230220872A1
SERIAL NO

17979847

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ATTORNEY / AGENT: (SPONSORED)

Importance

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Abstract

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A circumferential seal assembly suitable for forming a thin film between a rotatable runner and a sealing ring is presented. The assembly includes an annular seal housing, a rotatable runner, an annular seal ring, and a plurality of groove structures. Each groove structure includes a groove and an optional feed groove. The groove includes at least two adjoining steps defined by base walls arranged to decrease depthwise. Two adjoining base walls are disposed about a base shoulder. Each base shoulder locally redirects a longitudinal flow to form an outward radial flow in the direction of the annular seal ring. The base walls are bounded by and intersect a pair of side walls. A side wall includes side shoulders which narrows the groove widthwise and locally redirects the longitudinal flow to form a lateral flow in the direction of the other side wall. Outward and lateral flows separately or in combination enhance stiffness of a thin-film layer between the annular seal ring and the rotatable runner.

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First Claim

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Family

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Patent Owner(s)

  • STEIN SEAL COMPANY

International Classification(s)

Inventor(s)

Inventor Name Address # of filed Patents Total Citations
Garrison, Glenn M Perkiomenville, US 38 449

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