Rod end wear prevention

Patent metadata

Field	Value
Publication number	US-9863468-B2
Application number	US-201314029312-A
Country	US
Kind code	B2
Filing date	Sep 17, 2013
Priority date	Sep 17, 2013
Publication date	Jan 9, 2018
Grant date	Jan 9, 2018

Abstract

A rod and bracket assembly includes a bracket with a rod connected to the bracket via a fastener extending through a bracket hole. A bushing assembly is positioned at the bracket hole and includes a bushing having a bushing flange and a wear pad positioned between the bushing flange and an inner face of the bracket to prevent wear of the bracket and/or the rod in the event that the rod rolls about its own axis. A clevis assembly for a clevis and rod assembly includes a clevis having one or more clevis legs extending from a clevis base and a bushing assembly located at a clevis hole. The bushing assembly includes a bushing having a bushing flange and a wear pad disposed between the bushing flange and an inner face of the clevis leg to prevent wear of the clevis leg and/or the rod assembly.

First claim

What is claimed is:

1. A rod and bracket assembly comprising:
a bracket;
a rod connected to the bracket via a fastener extending through a bracket hole; and
a bushing assembly disposed at the bracket hole including:
a bushing having a bushing flange; and
a wear pad disposed between the bushing flange and an inner face of the bracket, and retained thereat by the bushing flange, to prevent wear of the bracket and/or the rod.

2. The rod and bracket assembly of claim 1 , wherein the bushing flange includes a retaining lip under which the wear pad is inserted.

3. The rod and bracket assembly of claim 2 , wherein the retaining lip defines a retention pocket between the retaining lip and the inner face.

4. The rod and bracket assembly of claim 3 , wherein the wear pad further comprises one or more retaining tabs insertable into the retention pocket.

5. The rod and bracket assembly of claim 1 , further comprising one or more locating features on the wear pad to rotationally or translationally orient or secure the wear pad relative to the bushing.

6. The rod and bracket assembly of claim 1 , wherein the wear pad is formed a material having increased softness, deformability, or non-abrasiveness compared to a softness, deformability or non-abrasiveness of the rod and the bracket.

7. The rod and bracket assembly of claim 1 , wherein the wear pad is configured to be installed and/or removed after bushing installation into the bracket hole.

8. The rod and bracket assembly of claim 1 , wherein the wear pad is formed of multiple wear pad components.

9. The rod and bracket assembly of claim 1 , wherein the wear pad is bendable or foldable for installation.

10. The rod and bracket assembly of claim 1 , wherein the bracket comprises a clevis having a clevis leg extending from a clevis base, the bracket hole disposed at the clevis leg.

11. A clevis assembly for a clevis and rod assembly comprising:
a clevis having one or more clevis legs extending from a clevis base; and
a bushing assembly disposed at a clevis hole including:
a bushing having a bushing flange; and
a wear pad disposed between the bushing flange and an inner face of the clevis leg, and retained thereat by the bushing flange, to prevent wear of the clevis leg.

12. The clevis assembly of claim 11 , wherein the bushing flange includes a retaining lip under which the wear pad is inserted.

13. The clevis assembly of claim 12 , wherein the retaining lip defines a retention pocket between the retaining lip and the inner face.

14. The clevis assembly of claim 13 , wherein the wear pad further comprises one or more retaining tabs insertable into the retention pocket.

15. The clevis assembly of claim 11 , further comprising one or more locating features on the wear pad to rotationally or translationally orient or secure the wear pad relative to the bushing.

16. The rod and bracket assembly of claim 11 , wherein the wear pad is formed from a material having increased softness, deformability, or non-abrasiveness compared to a softness, deformability or non-abrasiveness of the rod and the clevis.

17. The clevis assembly of claim 11 , wherein the wear pad is configured to be installed and/or removed after bushing installation into the clevis hole.

Assignees

• Sikorsky Aircraft Corp

Inventors

• Halcom Lance

Classifications

• Y10T403/32606

  Pivoted · CPC title

• F16C23/045 Primary

  for radial load mainly, e.g. radial spherical plain bearings · CPC title

• F16C11/02

  Trunnions; Crank-pins (fastening crank-pins to webs, crank-pins integral with cranks F16C3/06, F16C3/22) · CPC title

• F16C11/045

  with at least a pair of arms pivoting relatively to at least one other arm, all arms being mounted on one pin (crank-pins F16C11/02) · CPC title

• F16C2326/43

  Aeroplanes; Helicopters · CPC title