US3618340A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Telescoping universal joint shaft
Assignee: Walterscheid GmbH
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Filing: 1970-07-29
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Granted: 1971-11-09
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Expires: 1990-07-29
Abstract
Abstract A SHAFT FOR TRANSMITTING TORQUE BETWEEN TWO UNIVERSAL JOINTS COMPRISES THREE TELESCOPING TUBULAR SHAFT MEMBERS AXIALLY MOVABLE WITH RESPECT TO EACH OTHER AND ENCLOSED BY THREE TELESCOPING PROTECTIVE TUBULAR MEMBERS ALSO AXIALLY MOVEABLE. STOP MEANS ARE PROVIDED ON THE INNER AND OUTER TUBULAR SHAFT MEMBERS ENGAGEABLE WITH PORTIONS OF THE INTERMEDIATE TUBULAR SHAFT MEMBER FOR LIMITING ITS AXIAL MOVEMENT. THE INTERMEDIATE PROTECTIVE TUBE MEMBER IS JOURNALED ON THE INTERMEDIATE SHAFT MEMBER WITH BOTH INTERMEDIATE MEMBERS BEING MOVEABLE TOGETHER.
Inventors
- 👤 Hubert Geisthoff
- 👤 Heinrich Welschof
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-24 17:49
CPC Classifications
F; F16; F16D; F16D3/00; F16D3/02; F16D3/06; F16D3/84; F16D3/841
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
No citation records indexed.
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1974-11-08 | 1975-05-10 | 1975-11-09 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1978-11-08 | 1979-05-10 | 1979-11-09 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1982-11-08 | 1983-05-10 | 1983-11-09 | $7700.00 | Window Closed / Lapsed |