Bearings – Rotary bearing – Plain bearing
Patent
1991-12-13
1992-07-14
Footland, Lenard A.
Bearings
Rotary bearing
Plain bearing
384300, 3849071, 384909, 384911, 384913, F16C 3320
Patent
active
051297396
ABSTRACT:
A bearing with dynamic pressure grooves includes an outer cylinder made of a metal and a resin sheet bonded to the inner peripheral surface of the outer cylinder. The resin sheet is made of a thermoplastic resin, for example, a polytetra fluoroethylene, as a main component mixed with a wear-resistant improving material, for example, graphite or the like. The resin sheet is formed with a pattern of dynamic pressure generating grooves formed in an inner surface by plastic work. The pattern of grooves is varied depending on the types of relative movement between the outer cylinder and a shaft body, i.e., whether an axial linear movement, a rotational movement, or a spiral movement.
REFERENCES:
patent: 3464845 (1969-09-01), Osborn et al.
patent: 4123122 (1978-10-01), Gabrielson et al.
patent: 4865467 (1989-09-01), Becker et al.
patent: 4875263 (1989-10-01), Furumura
Asai Hiromitsu
Nagato Takashi
Sugi Hiromi
Footland Lenard A.
Nippon Seiko Kabushiki Kaisha
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