Retained polymer bushing bearing

• US 20030091251A1
• Filed: 11/13/2001
• Published: 05/15/2003
• Est. Priority Date: 11/13/2001
• Status: Active Grant

• Current Assignee: Emerson Power Transmission Manufacturing L.P. (Emerson Electric Company)
• Original Assignee: Emerson Power Transmission Manufacturing L.P. (Emerson Electric Company)
• Inventors: Ni, Xuehai, Cook, John, Paver, Ed
• Granted Patent: US 6,729,765 B2
• Time in Patent Office: Days
• US Class Current: 384/295
• CPC Class Codes: F16C 2208/32 Polytetrafluorethylene [PTFE] F16C2208/58 takes precedence
• CPC Class Codes: F16C 33/08 Attachment of brasses, bushes or linings to the bearing housing
• CPC Class Codes: F16C 33/20 Sliding surface consisting mainly of plastics F16C33/22 - F16C33/28 take precedence
• CPC Class Codes: F16C 33/201 Composition of the plastic
• CPC Class Codes: F16C 35/02 in the case of sliding-contact bearings
• CPC Class Codes: Y10S 384/906 Antirotation key

Abstract

A bearing directed to a bushing positioned within a housing that is positively retained to prevent the bushing from moving axially with respect to the housing and that also prevents the bushing from rotating relative to the housing. The present embodiment accomplishes these goals by the use of a retention pin that positively retains the bushing within the housing.

Claims

1. A bearing comprising:

a housing; and

a bushing positioned within the housing;

wherein the bushing is locked from rotating in relation to the housing in an axial and circumferential direction.

2. The bearing of claim 1 wherein the bushing is mechanically locked from rotating in the axial and circumferential direction by at least one retention pin.

3. The bearing of claim 2 wherein the retention pin has a first end and a second end, and wherein the first end is positioned within the bushing and the second end is positioned within the housing to prevent the bushing from rotating in relation to the housing in the axial and circumferential direction.

4. The bearing of claim 2 wherein the retention pin comprises a polymer.

5. The bearing of claim 1 wherein the bushing comprises a polymer.

6. The bearing of claim 1 wherein the bushing is mechanically locked from rotating in the axial and circumferential direction by at least one retention pin, and wherein the retention pin is integral to the bushing.

7. The bearing of claim 1 wherein the bushing is mechanically locked from rotating in the axial and circumferential direction by at least one retention pin, and wherein the retention pin is integral to the housing.

8. The bearing of claim 1 wherein a sleeve positioned within the bushing can rotate around the center axis of the bushing.

9. A bearing assembly comprising:

a housing;

a bushing positioned within the housing; and

at least one retention pin;

wherein the retention pin mechanically retains the bushing from rotating within the housing in an axial and circumferential direction.

10. The bearing assembly of claim 9 wherein the retention pin can be located at any position located along the axial line of the bushing.

11. The bearing assembly of claim 9 wherein the retention pin and the bushing are made of the same material.

12. The bearing assembly of claim 9 wherein the retention pin and the bushing are made of different materials.

13. The bearing assembly of claim 9 wherein a sleeve can rotate around the center axis of the bushing.

14. A retention system for a bearing, the system comprising:

an outer ring;

an inner ring positioned within the outer ring; and

at least one locking pin;

wherein the locking pin restrains the inner ring from rotating in relation to the outer ring in an axial and circumferential direction.

15. The retention system of claim 14 wherein the outer ring comprises the housing of the bushing bearing.

16. The retention system of claim 14 wherein the inner ring comprises a polymer bushing.

17. The retention system of claim 14 wherein the locking pin comprises a polymer rod to lock the inner ring inside of the outer ring.

18. The retention system of claim 14 further comprising a sleeve that can rotate around the center axis of the inner ring.