Bearings – Rotary bearing – Fluid bearing
Patent
1997-03-28
1999-05-11
Footland, Lenard A.
Bearings
Rotary bearing
Fluid bearing
F16C17/03
Patent
active
059020490
ABSTRACT:
A compliant hydrodynamic fluid film journal bearing for handling high loads. The bearing assembly includes a first thin smooth compliant sheet for facing a shaft, one or more corrugated foils, and a second sheet between the foils and the compliant sheet for supportedly underlying the compliant sheet for preventing sagging of the first sheet between ridges of the foils. A foil element is anchored at a position intermediate its ends to the bearing sleeve whereby both ends thereof are unanchored. A pair of radially outer and inner corrugated foils have outer foil ridges which underlie some inner foil ridges and outer foil furrows which underlie others of the inner foil ridges. A bearing assembly includes a plurality of rows of corrugated foil elements wherein ends of foil elements are offset circumferentially from ends of foil elements in adjacent rows symmetrically from the radial centerplane to provide a herringbone pattern effect. At least some ridges on at least one of inner and outer corrugated foils have truncated apex portions.
REFERENCES:
patent: 3809443 (1974-05-01), Cherubim
patent: 4229054 (1980-10-01), Miller, Jr.
patent: 4262975 (1981-04-01), Heshmat et al.
patent: 4274683 (1981-06-01), Gray et al.
patent: 4277111 (1981-07-01), Gray et al.
patent: 4277112 (1981-07-01), Heshmat
patent: 4277113 (1981-07-01), Heshmat
patent: 4295689 (1981-10-01), Licht
patent: 4296976 (1981-10-01), Heshmat
patent: 4300806 (1981-11-01), Heshmat
patent: 4415281 (1983-11-01), Agrawal
patent: 4435839 (1984-03-01), Gu et al.
patent: 4451163 (1984-05-01), Glaser
patent: 4465384 (1984-08-01), Heshmat et al.
patent: 4475824 (1984-10-01), Glaser et al.
patent: 4549821 (1985-10-01), Kawakami
patent: 4552466 (1985-11-01), Warren
patent: 4699523 (1987-10-01), Haaemeister
patent: 4950089 (1990-08-01), Jones
patent: 5110220 (1992-05-01), Gu
patent: 5116143 (1992-05-01), Saville et al.
patent: 5228785 (1993-07-01), Saville et al.
patent: 5248205 (1993-09-01), Gu et al.
patent: 5318366 (1994-06-01), Nadjafi
patent: 5498083 (1996-03-01), Brown
patent: 5547286 (1996-08-01), Struziak
patent: 5584582 (1996-12-01), Brown
H. Heshmat, "Analysis of Compliant Foil Bearings with Spatially Variable Stiffness", AlAA/SAE/ASME/ASEE 27.sup.th Joint Propulsion Conference, Jun. 24-26, 1991, pp. 1-11, Sacramento, CA.
H. Heshmat et al, "Application of Compliant Fluid-Film Bearings to the High-Pressure Oxygen Turbopump of the SSME", 1992 Conference on Advanced Earth-to-Orbit Propuls technolog, May 19-21, 1992, pp.1-10, Marshall Space Flight Center, Alabama.
H. Heshmat, "A Feasibility Study on the Use of Foil Bearings in Cryogenic Turbopumps", AlAA/SAE/ASME/ASEE 27.sup.th Joint Propulsion Conference, Jun. 24-26, 1991, pp. 1-12, Sacramento, CA.
H. Heshmat et al, "Development of Foil Journal Bearings for High Load Capacity and High Speed Whirl Stability ", ASLE-ASME Joint Lubrication Conference, Oct. 4-7, 1981, pp. 1-8, New Orleans, LA.
Footland Lenard A.
Mohawk Innovative Technology, Inc.
LandOfFree
High load capacity compliant foil hydrodynamic journal bearing does not yet have a rating. At this time, there are no reviews or comments for this patent.
If you have personal experience with High load capacity compliant foil hydrodynamic journal bearing, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and High load capacity compliant foil hydrodynamic journal bearing will most certainly appreciate the feedback.
Profile ID: LFUS-PAI-O-242029