Bearing assembly and liner

• US 4,111,499 A
• Filed: 12/02/1976
• Issued: 09/05/1978
• Est. Priority Date: 03/31/1975
• Status: Expired due to Term

• Current Assignee: Roller Bearing Company of America Incorporated (RBC Bearings Incorporated)
• Original Assignee: HEIM Universal Corporation
• Inventors: McCloskey, Albert R.
• Primary Examiner(s): Bertsch, Richard A.
• Application Number:
  US05/746,752
• Time in Patent Office: 642 Days
• Field of Search: 308/72, 308/237, 308/238, 308/DIG. 8, 308/DIG. 12, 252/12
• US Class Current: 384/192
• CPC Class Codes: F16C 23/045 for radial load mainly, e.g. radial spherical plain bearings
• CPC Class Codes: F16C 33/201 Composition of the plastic
• CPC Class Codes: F16C 33/28 with embedded reinforcements shaped as frames or meshed materials
• CPC Class Codes: Y10S 384/909 Plastic

Abstract

A bearing liner adapted for extreme temperature applications comprising polybutadiene resin matrix having included therein a random dispersion of polytetrafluoroethylene particles, the resin matrix adhered to a backing material.

Claims

1. A bearing liner adapted for extreme temperature applications comprising a resin matrix selected from the group consisting of a polyimide resin matrix and a polybutadiene resin matrix having included therein a random dispersion of polytetrafluorethylene particles, said resin matrix adhered to a backing material, thereby providing a bearing liner having an extensive operating temperature range.

2. A bearing liner adapted for extreme temperature applications in accordance with claim 1 wherein said resin matrix is a polybutadiene resin matrix.

3. A bearing liner adapted for extreme temperature applications in accordance with claim 2 wherein said polybutadiene resin matrix is mixed with an equal amount of polytetrafluoroethylene particles by volume.

4. A bearing liner adapted for extreme temperature applications in accordance with claim 3 wherein said backing material is a member selected from a class consisting of plastic, fiber glass, fine wire mesh or a high temperature nylon-like material.

5. A bearing liner adapted for extreme temperature applications in accordance with claim 1 wherein said resin matrix is a polyimide resin matrix.

6. A bearing liner adapted for extreme temperature applications in accordance with claim 5 wherein said polyimide resin matrix is mixed with an equal amount of polytetrafluoroethylene particles by volume.

7. A bearing liner adapted for extreme temperature applications in accordance with claim 6 wherein said polyimide resin matrix is blended with a polyamide resin.

8. A bearing liner adapted for extreme temperature applications in accordance with claim 7 wherein the said polyimide is blended with said polyamide at a ratio of 98 percent polyimide to 2 percent polyamide by volume.

9. A spherical bearing assembly comprising an outer member having a concave inner surface and an inner member having a convex outer surface and generally complementary to said inner surface, a bearing liner affixed to one of said surfaces, said bearing liner comprising polybutadiene resin matrix having included therein a random dispersion of polytetrafluoroethylene particles.

10. A spherical bearing assembly comprising an outer member having a concave inner surface and an inner member having a convex outer surface and generally complementary to said inner surface, a bearing liner affixed to one of said surfaces, said bearing liner comprising polyimide resin matrix having included therein a random dispersion of polytetrafluoroethylene particles.