Rotary seal with improved film distribution
The present invention is a generally circular rotary seal that establishes sealing between relatively rotatable machine components for lubricant retention and environmental exclusion, and incorporates seal geometry that interacts with the lubricant during relative rotation to distribute a lubricant film within the dynamic sealing interface. The features of a variable inlet size, a variable dynamic lip flank slope, and a reduction in the magnitude and circumferentially oriented portion of the lubricant side interfacial contact pressure zone at the narrowest part of the lip, individually or in combination thereof, serve to maximize interfacial lubrication in severe operating conditions, and also serve to minimize lubricant shear area, seal torque, seal volume, and wear, while ensuring retrofitability into the seal grooves of existing equipment.
- Research Organization:
- Kalsi Engineering, Inc., Sugar Land, TX (United States)
- Sponsoring Organization:
- USDOE
- DOE Contract Number:
- FG02-05ER84206
- Assignee:
- Kalsi Engineering, Inc. (Sugar Land, TX)
- Patent Number(s):
- 9,121,504
- Application Number:
- 14/028,066
- OSTI ID:
- 1213466
- Resource Relation:
- Patent File Date: 2013 Sep 16
- Country of Publication:
- United States
- Language:
- English
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