Bearings – Rotary bearing – Antifriction bearing
Patent
1994-03-10
1995-09-12
Footland, Lenard A.
Bearings
Rotary bearing
Antifriction bearing
384544, F16C 1908
Patent
active
054492378
ABSTRACT:
Disclosed is an improved bearing assembly comprising; an external member which forms a projected/recessed teeth domain on own external circumferential surface in order to make up a pulser portion and also forms a bearing raceway surface on own internal circumferential surface; an internal member which forms the other bearing track surface on own external circumferential surface; and a plurality of rolling elements which are individually disposed between respective raceway surfaces of the external and internal members. The bearing assembly is characterized in that phosphotized film is initially formed on the surface of the projected/recessed teeth domain and then either synthetic-resinous film or molybdenum film is superposed on the phosphate film coated on the projected/recessed teeth domain. By virtue of the coating of said films, the projected/recessed teeth domain for maing up the pulser portion is further coated with synthetic-resinous film by way of superposing on the phosphate film. Thus, even when the projected/recessed teeth domain is stained by muddy water or solution containing rust-generating contaminant, the pulser portion consisting of the projected/recessed teeth domain can constantly remain free of rust during service life.
REFERENCES:
patent: 3716788 (1973-02-01), Nishida
patent: 4795278 (1989-01-01), Hayashi
patent: 5143458 (1992-09-01), Alff et al.
Footland Lenard A.
Koyo Seiko Co. Ltd.
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