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US 8,011,671 B2Granted
Shaft seal having integrated removal feature
AssigneeFederal-Mogul World Wide, Inc.
InventorChristopher Madigan
Life of this patent
Estimating the term…
Abstract
A dynamic shaft seal assembly has inner and outer cases that are clamped together to secure a seal element therebetween for dynamic sealing about a rotatable shaft. The inner case is formed with integral pull tabs that are engageable by a seal removal tool to facilitate the removal of the seal assembly from a bore in which the seal assembly is installed.
Claims15
A dynamic seal assembly, comprising:
- an outer annular case having a cylindrical mounting portion extending between a flange portion and an axially outer end;
- an inner annular case having a cylindrical outer leg with an annular inner leg extending radially inwardly from said cylindrical outer leg to a free inner mouth edge;
- an annular seal element clamped between said inner and outer cases with said axially outer end of said outer case being forceably curled over said cylindrical outer leg of said inner case to urge said inner and outer cases axially toward one another and thereby exert a clamping force on said seal element;
- and
- including at least one integral pull tab formed as one piece with said inner case, said at least one pull tab extending radially inwardly from said free inner mouth edge of said annular inner leg for engagement by a seal removal tool.
2 more elements
Dependencies are inferred from the claim text.