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US 2007/0182102 A1Published application
Spring supported dual element face seal with a run surface sleeve
AssigneeFederal-Mogal World Wide, Inc.
InventorsDavid Mormile, Mark Vinton
Life of this patent
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Abstract
The invention provides a seal for a rotatable shaft. The seal includes an inner case mountable to the shaft and having a body and first and second flanges extending radially outward from the body. The seal includes first and second sealing discs operable to seal against the first and second flanges of the inner case. The sealing discs are immovably associated with a housing spaced from the shaft. A spring encircles the shaft and inner case to urge the sealing discs against the flanges. The spring rate of the spring is controlled to enhance sealing, reduce turning torque, and extend life of the seal.
Claims1
A seal assembly comprising:
- an inner case having a pair of axially spaced flanges;
- an inner case having a pair of axially spaced flanges extending toward said flanges of said inner case;
- a pair of sealing discs disposed between said flanges of said inner and outer cases;
- and
- a spring disposed between said sealing discs and acting to constantly urge said sealing discs into engagement with said flanges of said inner and outer cases. cm 2. The assembly of claim 1 including a pair of washers disposed between said spring and said sealing discs. cm 3. The assembly of claim 2 wherein said spring comprises a wave spring. cm 4. The assembly of claim 1 including a spacer disposed between and engaging said sealing discs. cm 5. The assembly of claim 1 wherein said inner and outer cases are rotatable relative to one another.
2 more elements