This is a continuation-in-part of utility application Ser. No. 09/073,410 filed on May 6, 1998 by Lannie Dietle and entitled “Rotary Seal With Enhanced Lubrication And Contaminant Flushing”. Portions of this invention were made with government support under contract no. DE-AC03-90ER80939 awarded by the Department of Energy. The government has certain rights in this invention. Applicant hereby claims the benefit of U.S. Provisional Application Serial No. 60/131,435 filed on Apr. 26, 1999 by William T. Conroy, Lannie L. Dietle, Jeffrey D. Gobeli, and Manmohan S. Kalsi and entitled “Improved Skew-Resisting Hydrodynamic Seal”, which provisional application is incorporated herein by reference for all purposes.
Number | Name | Date | Kind |
---|---|---|---|
3744805 | Heinrich | Jul 1973 | A |
4288083 | Braconier | Sep 1981 | A |
4484753 | Kalsi | Nov 1984 | A |
4610319 | Kalsi | Sep 1986 | A |
4619534 | Daly et al. | Oct 1986 | A |
5024364 | Nash | Jun 1991 | A |
5139275 | Ehrmann et al. | Aug 1992 | A |
5195757 | Dahll | Mar 1993 | A |
5230520 | Dietle et al. | Jul 1993 | A |
5678829 | Kalsi et al. | Oct 1997 | A |
5711534 | Bengoa et al. | Jan 1998 | A |
5738358 | Kalsi et al. | Apr 1998 | A |
5763956 | Metz et al. | Jun 1998 | A |
5823541 | Dietel et al. | Oct 1998 | A |
5873576 | Dietle et al. | Feb 1999 | A |
5915696 | Onuma et al. | Jun 1999 | A |
6007105 | Dietle et al. | Dec 1999 | A |
6036192 | Dietle et al. | Mar 2000 | A |
Number | Date | Country |
---|---|---|
0030085 | Jun 1981 | EP |
0860351 | Aug 1998 | EP |
499.480 | Jan 1939 | GB |
WO 9837347 | Aug 1998 | WO |
Entry |
---|
“Kalsi Seals Rotary Shaft Seal Catalog,” Kalsi Engineering, Inc., Dec. 1, 1993. |
Kalsi, M.S., et al. “A Novel High-Pressure Rotary Shaft Seal Faciliaties Innovations in Drilling and Production Equipment.”, SPE #37627, 1997. |
Langford, J., and Kalsi, M.S. “A New Hydrodynamically Lubricated Bearing Seal for Improving Rock Bit Performance.” pp 1-8, vol. 27, Drilling Technology Symposium, American Society of Mechanical Engineers, Book No. G00508-1990. |
Ayala, Hugo M., et al. “Seal Design for Reduced Wear in Abrasive Slurries”, pp 1-17, FEDSM97-3446; Fluids Engineering Division Summer Meeting, American Society of mechanical Engineers, Ju. 22-26, 1997. |
Ayala, Hugo M., et al. “Wear of Elastomeric Seals in Abrasive Slurries,” pp 9-21, Wear 220 (1998) Elsevier Science S.A., Aug. 28, 1997. |
Kalsi, M.S., et al. “Feasibility Study of a Slated O-Ring as a High Pressure Rotary Seal” ASME Paper No. 72-WA/DE-14(1972). |
Kalsi, M.S. Elastohydrodynamic Lubrication of Offset O-Ring Rotary Seal, ASME Transactions, Journal of Lubrication Technology, vol. 103; Paper 80-C2/Lub-7, American Society of Mechanical Engineers, Jul. 1981. ASME Paper No. 80-C2/Lub-7 (1980). |
Horve, Leslie A. “Shaft Seals for Dynamic Applications”, pp. 338-339; Marcel Dekker, Inc., 1996. |
Number | Date | Country | |
---|---|---|---|
60/131435 | Apr 1999 | US |
Number | Date | Country | |
---|---|---|---|
Parent | 09/073410 | May 1998 | US |
Child | 09/558907 | US |