Bearings – Rotary bearing – Antifriction bearing
Reexamination Certificate
2011-04-26
2011-04-26
Hannon, Thomas R (Department: 3656)
Bearings
Rotary bearing
Antifriction bearing
Reexamination Certificate
active
07931410
ABSTRACT:
A strength of a machined cage for a cylindrical roller bearing is increased without reducing a bearing life. An integral machined cage for a cylindrical roller bearing includes: a pair of side plates (42, 44); a plurality of columns (46), which are arranged in a circumferential direction, for connecting the pair of side plates (42, 44); pockets (48) formed between the adjacent columns (46); and relief portions (50) provided at four corners of each of the pockets (48), in which as viewed from a section perpendicular to an axis of the cage, the columns (46) have side surfaces each constituting a circular arc shape, and the relief portions (50) are in parallel to the side surfaces of the columns (46).
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Ozu Takuya
Tsumori Yukihisa
Hannon Thomas R
Johnson Phillip A
NTN Corporation
Wenderoth , Lind & Ponack, L.L.P.
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