Method of manufacturing a retainer for a roller bearing

Metal working – Method of mechanical manufacture – Process for making bearing or component thereof

Reexamination Certificate

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C029S898065, C029S898064, C384S572000, C384S574000

Reexamination Certificate

active

07571543

ABSTRACT:
A method of manufacturing a retainer for a roller bearing made of a metal plate and has a tubular main portion, pockets formed in the main portion intermittently concerning a circumferential direction and capable of retaining rollers rollably, and an outwardly oriented flange-like collar portion. An annular intermediate material is formed by die cutting the metal plate, and after a second intermediate material is formed by forming through holes in the intermediate material intermittently, a portion of the second intermediate material excluding a radially outer end portion is plastically deformed into a tubular shape. The portion plastically deformed tubular shape is formed as the main portion, a portion corresponding to the radially outer end portion of the second intermediate material is formed as the collar portion or a collar portion element for forming the collar portion, and portions corresponding to the through holes are formed as the pockets.

REFERENCES:
patent: 1602350 (1926-10-01), Fernstrom
patent: 3240543 (1966-03-01), Benson
patent: 5234274 (1993-08-01), Honda et al.
patent: 21 46 056 (1973-03-01), None
patent: 4140161 (1993-06-01), None
patent: 54-42551 (1979-04-01), None
patent: 1-158820 (1989-11-01), None
patent: 2000-2247 (2000-01-01), None
patent: 2000-104737 (2000-04-01), None
patent: 2001-388440 (2001-02-01), None
patent: 2001-153143 (2001-06-01), None

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