Title:
【発明の名称】非晶質ケース付き重合体軸受保持器
Document Type and Number:
Japanese Patent JP3290175
Kind Code:
B2
Abstract:
A plastic part is molded of a plastic with an inner body of crystalline plastic and an outer surface layer of an amorphous plastic. The amorphous surface layer withstands friction loading at least during an initial break-in period. In one embodiment, the amorphous surface is formed by using a higher plastic melt temperature and/or a lower mold temperature than normal. In another embodiment, an intermediate part is molded as a crystalline intermediate part, and a surface layer is heated and quenched to form the amorphous surface layer on the final part. A bearing cage is molded by injecting the plastic melt at a single point intermediate the ends of a single bar of the bearing cage to permit formation of the desired amorphous layer on rails connected to the ends of the bars.
Inventors:
Seyfert, Keith El
First, Robert E
First, Robert E
Application Number:
JP50521592A
Publication Date:
June 10, 2002
Filing Date:
November 25, 1991
Export Citation:
Assignee:
The Torrington Company
International Classes:
B29C45/00; B29C71/02; B32B27/00; C08J7/00; F16C33/44; F16C33/56; F02B61/04; F02B75/02; (IPC1-7): B29C45/00; B29C71/02; B32B27/00; C08J7/00; F16C33/44
Domestic Patent References:
| JP4113026A | ||||
| JP3215530A | ||||
| JP269534A | ||||
| JP6479419A |
Attorney, Agent or Firm:
Warren G. Simor