Rotary seal with improved film distribution
Abstract
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.
- Inventors:
- Issue Date:
- Research Org.:
- Kalsi Engineering, Inc., Sugar Land, TX (United States)
- Sponsoring Org.:
- USDOE
- OSTI Identifier:
- 1213466
- Patent Number(s):
- 9121504
- Application Number:
- 14/028,066
- Assignee:
- Kalsi Engineering, Inc. (Sugar Land, TX)
- Patent Classifications (CPCs):
-
F - MECHANICAL ENGINEERING F16 - ENGINEERING ELEMENTS AND UNITS F16J - PISTONS {
- DOE Contract Number:
- FG02-05ER84206
- Resource Type:
- Patent
- Resource Relation:
- Patent File Date: 2013 Sep 16
- Country of Publication:
- United States
- Language:
- English
- Subject:
- 42 ENGINEERING
Citation Formats
Dietle, Lannie Laroy, and Schroeder, John Erick. Rotary seal with improved film distribution. United States: N. p., 2015.
Web.
Dietle, Lannie Laroy, & Schroeder, John Erick. Rotary seal with improved film distribution. United States.
Dietle, Lannie Laroy, and Schroeder, John Erick. Tue .
"Rotary seal with improved film distribution". United States. https://www.osti.gov/servlets/purl/1213466.
@article{osti_1213466,
title = {Rotary seal with improved film distribution},
author = {Dietle, Lannie Laroy and Schroeder, John Erick},
abstractNote = {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.},
doi = {},
journal = {},
number = ,
volume = ,
place = {United States},
year = {Tue Sep 01 00:00:00 EDT 2015},
month = {Tue Sep 01 00:00:00 EDT 2015}
}
Works referenced in this record:
Hydrodynamic lubricant seal for drill bits
patent, September 1986
- Kalsi, Manmohan S.
- US Patent Document 4,610,319
Twist proof seal ring arrangement for shafts
patent, March 1988
- Muller, Heinz; Wolf, Andreas
- US Patent Document 4,729,569
Piston sealing arrangement for pressure-fluid-operated systems
patent, August 1992
- Schonlau, Juergen
- US Patent Document 5,140,904
Hydrodynamically lubricated rotary shaft seal with environmental side groove
patent, October 1997
- Kalsi, Manmohan S.; Conroy, William T.
- US Patent Document 5,678,829
Skew and twist resistant hydrodynamic rotary shaft seal
patent, February 1999
- Dietle, Lannie; Kalsi, Manmohan S.
- US Patent Document 5,873,576
Rotary seal with enhanced lubrication and contaminant flushing
patent, August 2000
- Dietle, Lannie
- US Patent Document 6,109,618