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US4019347A
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US
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Ball grooves for a constant velocity universal joint
Assignee: Loehr and Bromkamp GmbH
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Filing: 1975-07-11
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Granted: 1977-04-26
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Expires: 1995-07-11
Abstract
Abstract A constant velocity universal joint comprises an outer joint member with a hollow interior and grooves formed in the interior surface thereof. An inner joint member is within the outer joint member and has a plurality of grooves in its outer surface such that a groove of the outer member and a groove of the inner member jointly receive a ball which contacts a surface of each groove at one point under a torque load. A cage is disposed between the joint members and has a plurality of radial openings to retain the balls therein. Each of the grooves is constructed with a surface to provide a further point of contact by the balls under all bending angles of the joint and under torque load.
Inventors
- 👤 Werner Krude
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-04 16:46
CPC Classifications
F; F16; F16D; F16D3/00; F16D3/16; F16D3/20; F16D3/22; F16D3/223; F16D3/224; F16D2003/22309; Y; Y10; Y10S; Y10S464/00; Y10S464/904; Y10S464/906
Claims Analysis
Total Claims: 4
Claim 1
Independent Claim
129 words
A constant velocity universal joint comprising an outer joint member having a hollow interior and a plurality of grooves in the interior surface thereof, an inner joint member within said outer joint member and having a corresponding plurality of grooves in its outer surface, said inner and outer joint member grooves being opposed from each other to define pairs of opposed grooves, a ball in each pair of opposed grooves contacting a surface of each of said grooves at one point under a torque load, a cage between said joint members having a plurality of radial openings to retain said balls therein, and means in each of said grooves for defining a further contact point for said balls under all bending angles of the joint and under torque load.
Claim 2
Dependent Claim
129 words
A constant velocity universal joint comprising an outer joint member having a hollow interior and a plurality of grooves in the interior surface thereof, an inner joint member within said outer joint member and having a corresponding plurality of grooves in its outer surface, said inner and outer joint member grooves being opposed from each other to define pairs of opposed grooves, a ball in each pair of opposed grooves contacting a surface of each of said grooves at one point under a torque load, a cage between said joint members having a plurality of radial openings to retain said balls therein, and means in each of said grooves for defining a further contact point for said balls under all bending angles of the joint and under torque load.
Claim 3
Dependent Claim
20 words
A constant velocity universal joint as claimed in claim 1 wherein said means comprises a base surface of a groove.
Claim 4
Dependent Claim
24 words
A constant velocity universal joint as claimed in claim 2 wherein said groove base surface comprises one of a plane, concave or convex surfaces.
References Cited (Backward Citations)
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1980-04-25 | 1980-10-25 | 1981-04-26 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1984-04-25 | 1984-10-25 | 1985-04-26 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1988-04-25 | 1988-10-25 | 1989-04-26 | $7700.00 | Window Closed / Lapsed |