IP Library › Granted Patent US 12687202
Granted Patent B2
US 12687202 · App. 18/585,530 · Granted Jul 21, 2026

Constant velocity joint

Inventors: Aaron Horne (Lathrup Village, MI); Riki Patel (Royal Oak, MI); Amber Stettnichs (Farmington Hills, MI)
F16D3/226F16L21/03F16D2003/22326Y10S464/906
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Quick Facts
Patent No.
US 12687202
App. No.
18/585,530
Granted
Jul 21, 2026
Kind
B2
Abstract

A constant velocity joint includes an outer race that extends about an axis and is configured to be coupled with a first shaft. The outer race extends axially between a top surface and a bottom surface. An inner race is located in the compartment and is pivotable relative to the outer race for being connected with a second shaft. A plurality of balls are positioned between the outer and inner races for guiding the pivoting movement outer and inner races while transmitting rotational movement between the outer an inner races. An upper can is coupled to the top surface of the outer race for sealing the compartment of the outer race. A plurality of bolt holes extend axially through the outer race radially outwardly of the upper can.

Claims (29)

1 . A constant velocity joint, comprising:

an outer race extending about an axis and configured to be coupled with a first shaft;

the outer race extending axially between a top surface and a bottom surface and extending radially between a radially outer surface and a radially inner surface, the radially inner surface of the outer race defining a compartment;

an inner race in the compartment and pivotable relative to the outer race for being connected to a second shaft;

a plurality of balls positioned radially between the outer and inner races for guiding the pivoting movement of the inner race relative to the outer race while transmitting rotational movement between the outer and inner races;

an upper can coupled to the top surface of the outer race for sealing the compartment of the outer race, wherein the top surface of the outer race defines a counter bore along the radially inner surface of the outer race radially inward of a plurality of bolt holes, and wherein the upper can is fixed in the counter bore;

the radially inner surface of the outer race defining a plurality of first ball tracks, and the radially inner surface of the outer race presenting a plurality of rims at an axial top of each of the first ball tracks, each of the rims extending radially over the balls axially under the counter bore of the outer race to define a respective pocket that receives a respective one of the balls and limits axial movement of the respective one of the balls; and

the plurality of bolt holes extending axially through the outer race and arranged circumferentially around the outer race and positioned radially outwardly of the upper can for receiving bolts to attach the outer race to the first shaft.

2 . The constant velocity joint as set forth in claim 1 , wherein the counter bore extends axially downwardly along the radially inner surface of the outer race radially inward of the bolt holes, and wherein the upper can is fixed in the counter bore.

3 . The constant velocity joint as set forth in claim 2 , wherein the upper can is press fit in the counter bore.

4 . The constant velocity joint as set forth in claim 2 , wherein the upper can has a rim portion in the counter bore, and wherein the rim portion engages the top surface of the outer race in the counter bore continuously and uninterrupted 360 degrees around the rim.

5 . The constant velocity joint as set forth in claim 4 , wherein the counter bore includes a radial wall extending along a plane being perpendicular to the axis and an axial wall extending axially, and wherein the rim portion overlies the radial wall of the counter bore of the outer race and terminates at a lip extending axially upwardly and engaging the axial wall of the counter bore.

6 . The constant velocity joint as set forth in claim 1 , wherein each of the rims is hemispherical shaped.

7 . The constant velocity joint as set forth in claim 6 , wherein the first ball tracks are truncated beneath the top surface of the outer race to form the rims.

8 . The constant velocity joint as set forth in claim 6 , wherein a radially outward surface of the inner race defines a plurality of axially extending second ball tracks, and wherein the first ball tracks and the second ball tracks are circumferentially aligned with one another with one of the plurality of balls positioned between each of the aligned ball tracks.

9 . A constant velocity joint, comprising:

an outer race extending about an axis and configured to be coupled with a first shaft;

the outer race extending axially between a top surface and a bottom surface and extending radially between a radially outer surface and a radially inner surface, the radially inner surface of the outer race defining a compartment;

an inner race located in the compartment and pivotable relative to the outer race for being connected with a second shaft;

a plurality of balls positioned radially between the outer and inner races for guiding the pivoting movement of the inner race relative to the outer race while transmitting rotational movement between the outer and inner races;

an upper can coupled to the top surface of the outer race for sealing the compartment of the outer race, wherein the top surface of the outer race defines a counter bore along the radially inner surface of the outer race, and wherein the upper can is fixed in the counter bore; and

the radially inner surface of the outer race defining a plurality of first ball tracks, and the radially inner surface of the outer race presenting a plurality of rims at an axial top of each of the first ball tracks, each of the rims extending radially over the balls axially under the counter bore of the outer race to define a respective pocket that receives a respective one of the balls and limits axial movement of the respective one of the balls.

10 . The constant velocity joint as set forth in claim 9 , wherein each of the rims is hemispherical shaped.

11 . The constant velocity joint as set forth in claim 10 , wherein a radially outward surface of the inner race defines a plurality of axially extending second ball tracks, wherein the first and second ball tracks are circumferentially aligned with one another and with one of the plurality of balls positioned between each of the aligned ball tracks.

12 . The constant velocity joint as set forth in claim 10 , wherein the top surface of the outer race defines a plurality of bolt holes extending axially through the outer race and arranged circumferentially around the outer race and positioned radially outwardly of the upper can for receiving bolts to attach the outer race to the first shaft.

13 . The constant velocity joint as set forth in claim 12 , wherein the top surface of the outer race defines the counter bore along the radially inner surface of the outer race radially inward of the bolt holes, and wherein the upper can is fixed in the counter bore.

14 . The constant velocity joint as set forth in claim 13 , wherein the upper can has a rim portion in the counter bore, and wherein the rim portion engages the top surface of the outer race in the counter bore continuously and uninterrupted 360 degrees around the rim.

15 . The constant velocity joint as set forth in claim 13 , wherein the upper can is press fit in the counter bore.

16 . The constant velocity joint as set forth in claim 13 , wherein the counter bore includes a radial wall extending along a plane being perpendicular to the axis and an axial wall extending axially, and wherein the upper can has a rim portion overlying the radial wall of the counter bore of the outer race and terminating at a lip extending axially upwardly and engaging the axial wall of the counter bore.