Bearings – Rotary bearing – Plain bearing
Reexamination Certificate
2007-02-27
2007-02-27
Footland, Lenard A. (Department: 3682)
Bearings
Rotary bearing
Plain bearing
Reexamination Certificate
active
11044294
ABSTRACT:
The present invention discloses a bearing assembly capable of assuring mechanical strength and reducing a friction coefficient and stress concentration, and a method for manufacturing the same. The present invention comprises a spherical journal and a hemispherical bearing that is made of a fiber reinforced composite and has a bearing surface for establishing a spherical pair with the spherical journal. The fiber reinforced composite can be constructed by arranging a uni-directional prepreg, woven fiber prepregs and staple-fiber prepregs in a variety of configurations, and thermoplastic resin particles or self-lubrication particles are uniformly provided on the bearing surface. It is possible to alleviate stress concentration generated on the bearing surface by forming a plurality of air channels capable of imparting directivity on an outer surface of the hemispherical bearing.
REFERENCES:
patent: 3375027 (1968-03-01), Ulderup
patent: 4060287 (1977-11-01), Orkin
patent: 5328273 (1994-07-01), Nonaka et al.
Kim Byung Chul
Kim Hak Sung
Kim Jong Woon
Kim Sung Su
Lee Dai Gil
Footland Lenard A.
Korea Advanced Institute of Science and Technology
Lowe Hauptman & Berner LLP
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