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US 2013/0256994 A1Published application
Sealing unit with controlled flow
AssigneeSchaeffler Technologies AG & Co. KG
InventorsSeth Claus, Jordan Miles, Charles Schwab
Life of this patent
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Abstract
A shaft seal includes a body portion and a radially protruding lip portion. The body portion has a radial wall with at least one radial groove. The lip portion is integrally formed with the body portion and deflectable for sealing engagement with a shaft. In an example embodiment, the seal is a single piece manufactured by injection molding. In an example embodiment, the seal includes nylon or carbon filled polyamide 46.
Claims15
A shaft seal comprising:
- a body portion including a radial wall with at least one groove;
- and,
- a radially protruding lip portion, integrally formed with the body portion, and deflectable for sealing engagement with a shaft.
A shaft seal assembly comprising:
- a housing with a first radial wall and a first circumferential wall;
- a shaft seal including a second radial wall in partial sealing engagement with the first radial wall and a second circumferential wall;
- and,
- a cylindrical flow area disposed radially between the first and second circumferential walls.
1 more element
Dependencies are inferred from the claim text.