Patent US3848085A successfully refreshed from Google Patents.
Patent US3073135A successfully refreshed from Google Patents.
US3073135A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Extensible shaft
Assignee: Fiatallis North America Inc
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Filing: 1961-12-18
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Granted: 1963-01-15
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Expires: 1981-12-18
Abstract
No abstract record available.
Inventors
- 👤 Keith S Wood
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-30 21:03
CPC Classifications
F; F16; F16D; F16D3/00; F16D3/02; F16D3/06; F16C; F16C3/00; F16C3/02
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
143 words
AN EXTENSIBLE SHAFT COMPRISING A FIRST ELONGATED TUBULAR SLEEVE OPEN AT ONE END AND HAVING A RECTANGULAR INTERNAL CROSS-SECTION, A CONNECTING ELEMENT MOUNTED ON THE OTHER END OF SAID SLEEVE, A SECOND ELONGATED TUBULAR SLEEVE OPEN AT ONE END AND BEING OF RECTANGULAR EXTERNAL CROSS-SECTION, SAID SECOND SLEEVE BEING TELESCOPED INTO SAID FIRST SLEEVE, A CYLINDRICAL BAR DISPOSED LOOSELY WITHIN SAID SECOND SLEEVE AND SUBSTANTIALLY ENCLOSED THEREBY WITH ONE END PORTION PROJECTING OUTWARDLY THEREFROM, A CONNECTION ADJACENT THE OTHER END OF SAID BAR RIGIDLY SECURING THE LATTER TO SAID SLEEVE, SAID BAR BEING RESILIENTLY FLEXIBLE AND FREE TO TWIST BETWEEN SAID CONNECTION AND SAID PROJECTING END PORTION, AND A SECOND CONNECTING ELEMENT MOUNTED ON SAID PROJECTING END PORTION ADJACENT THE OPEN END OF SAID SECOND SLEEVE, SAID BAR TRANSMITTING TORQUE FROM SAID SECOND ELEMENT TO SAID CONNECTION AND TWISTING TO ABSORB TORSIONAL SHOCKS.
Claim 2
Dependent Claim
143 words
AN EXTENSIBLE SHAFT COMPRISING A FIRST ELONGATED TUBULAR SLEEVE OPEN AT ONE END AND HAVING A RECTANGULAR INTERNAL CROSS-SECTION, A CONNECTING ELEMENT MOUNTED ON THE OTHER END OF SAID SLEEVE, A SECOND ELONGATED TUBULAR SLEEVE OPEN AT ONE END AND BEING OF RECTANGULAR EXTERNAL CROSS-SECTION, SAID SECOND SLEEVE BEING TELESCOPED INTO SAID FIRST SLEEVE, A CYLINDRICAL BAR DISPOSED LOOSELY WITHIN SAID SECOND SLEEVE AND SUBSTANTIALLY ENCLOSED THEREBY WITH ONE END PORTION PROJECTING OUTWARDLY THEREFROM, A CONNECTION ADJACENT THE OTHER END OF SAID BAR RIGIDLY SECURING THE LATTER TO SAID SLEEVE, SAID BAR BEING RESILIENTLY FLEXIBLE AND FREE TO TWIST BETWEEN SAID CONNECTION AND SAID PROJECTING END PORTION, AND A SECOND CONNECTING ELEMENT MOUNTED ON SAID PROJECTING END PORTION ADJACENT THE OPEN END OF SAID SECOND SLEEVE, SAID BAR TRANSMITTING TORQUE FROM SAID SECOND ELEMENT TO SAID CONNECTION AND TWISTING TO ABSORB TORSIONAL SHOCKS.
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) | 1966-01-14 | 1966-07-16 | 1967-01-15 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1970-01-14 | 1970-07-16 | 1971-01-15 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1974-01-14 | 1974-07-16 | 1975-01-15 | $7700.00 | Window Closed / Lapsed |