Grease boot for a ball joint

Patent metadata

Field	Value
Publication number	US-11713783-B2
Application number	US-202117383656-A
Country	US
Kind code	B2
Filing date	Jul 23, 2021
Priority date	Jul 23, 2021
Publication date	Aug 1, 2023
Grant date	Aug 1, 2023

Abstract

A ball joint includes a grease boot having a snap ring at least partially embedded in an elastomeric body. The snap ring has a C-shaped body that defines a compressible radial gap in the elastomeric body. The snap ring can be at least partially embedded in a flange of the grease boot, with a radially outermost edge of the flange including a first elastomeric shoulder, a second elastomeric shoulder, and an exposed outer wall of the snap ring located between the first elastomeric shoulder and the second elastomeric shoulder.

First claim

The invention claimed is:

1. A grease boot, comprising:
an elastomeric body; and
a snap ring that is at least partially embedded in the elastomeric body, wherein the snap ring has a C-shaped body that defines a compressible radial gap in the elastomeric body, wherein the C-shaped body includes one or more through holes for interlocking the snap ring with the elastomeric body, wherein each through hole is wholly surrounded by a material of the C-shaped body, wherein the elastomeric body includes an axially extending sleeve extending between a housing attachment end and a stud attachment end, the elastomeric body having a flange located toward the housing attachment end, and wherein a radially outermost edge of the flange includes a first elastomeric shoulder, a second elastomeric shoulder, and an exposed outer wall of the snap ring located between the first elastomeric shoulder and the second elastomeric shoulder.

2. The grease boot of claim 1 , wherein the flange is configured to seat in variably dimensioned radially extending grooves.

3. The grease boot of claim 1 , wherein the compressible radial gap is configured to by close 90% or more in size upon installation of the grease boot into a housing of a ball joint.

4. The grease boot of claim 1 , wherein the snap ring is made of a metal-based material and the elastomeric body is made of a polyurethane-based material.

5. A ball joint, comprising the grease boot of claim 1 , wherein the snap ring is at least partially embedded in a flange in the elastomeric body, and the flange is seated in a radially extending groove in an internal bore of a housing.

6. The ball joint of claim 5 , wherein a height of the radially extending groove is smaller than an uninstalled thickness of the flange.

7. A grease boot, comprising:
an elastomeric body having an axially extending sleeve extending between a housing attachment end and a stud attachment end, the elastomeric body having a flange located toward the housing attachment end; and
a snap ring that is at least partially embedded in the flange, wherein a radially outermost edge of the flange includes a first elastomeric shoulder, a second elastomeric shoulder, and an exposed outer wall of the snap ring located between the first elastomeric shoulder and the second elastomeric shoulder.

8. The grease boot of claim 7 , wherein the snap ring has a C-shaped body that defines a compressible radial gap in the elastomeric body.

9. The grease boot of claim 8 , wherein the compressible radial gap is configured to close by 90% or more in size upon installation of the grease boot into a housing of a ball joint.

10. The grease boot of claim 8 , wherein the C-shaped body includes one or more through holes for interlocking the snap ring with the elastomeric body.

11. A ball joint, comprising the grease boot of claim 7 , wherein the flange is seated in a radially extending groove in an internal bore of a housing.

12. The ball joint of claim 11 , wherein a height of the radially extending groove is smaller than an uninstalled thickness of the flange.

13. A ball joint, comprising:
a ball;
a stud extending from the ball;
a grease boot at least partially surrounding the stud, the grease boot having a snap ring at least partially embedded in an elastomeric body, wherein the elastomeric body includes an axially extending sleeve extending between a housing attachment end and a stud attachment end, the elastomeric body having a flange located toward the housing attachment end, wherein a radially outermost edge of the flange includes a first elastomeric shoulder, a second elastomeric shoulder, and an exposed outer wall of the snap ring located between the first elastomeric shoulder and the second elastomeric shoulder; and
a housing at least partially surrounding the ball, the housing having an internal bore, a chamfered receiving end, and a radially extending groove in the internal bore toward the chamfered receiving end, wherein the snap ring is at least partially seated in the radially extending groove in the internal bore of the housing.

14. The ball joint of claim 13 , wherein the snap ring has a C-shaped body that defines a compressible radial gap in the elastomeric body.

15. The ball joint of claim 14 , wherein the compressible radial gap is configured to close by 90% or more in size upon installation of the grease boot into a housing of a ball joint.

16. The ball joint of claim 14 , wherein the C-shaped body includes one or more through holes for interlocking the snap ring with the elastomeric body.

Assignees

• Fed Mogul Motorparts Llc

Inventors

• Englebright Seth
• Smith Sean

Classifications

• F16C11/068 Primary

  Special features relating to lubrication · CPC title

• F16C11/0671 Primary

  allowing operative relative movement of joint parts due to flexing of the sealing means · CPC title

• Y10T403/315

  Cross-Sectional Technologies · mapped topic

• Y10T403/32729

  Externally packed · CPC title

• F16C2226/74

  with snap-fit, e.g. by clips · CPC title