Patent US3237539A successfully refreshed from Google Patents.
US3237539A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Lift mechanism
Assignee: LAYTON Manufacturing CO
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Filing: 1964-04-30
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Granted: 1966-03-01
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Expires: 1984-04-30
Abstract
No abstract record available.
Inventors
- 👤 Jack D Layton
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-27 15:45
CPC Classifications
E; E01; E01C; E01C19/00; E01C19/48; E01C19/4866; E01C19/4873
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
98 words
FOR A TOWED VEHICLE HAVING FORWARD AND REAR ENDS AND LATERAL SUPPORT MEANS AT LEAST PARTIALLY SUPPORTING THE FORWARD END OF THE VEHICLE FOR MOVEMENT OVER THE GROUND, DRAFT MEAND FOR TOWING THE VEHICLE, AN ELONGATED, FLEXIBLE, TENSION-TRANSMITTING ELEMENT IN OPERATIVE POSITION EXTENDING ABOVE SAID DRAFT MEANS, SAID TENSION-TRANSMITTING ELEMENT HAVING A FORWARD END ADAPTED TO BE DETACHABLY CONNECTED TO A TOWING VEHICLE, GUIDE MEANS FOR SAID TENSION-TRANSMITTING ELEMENT MOUNTED ON THE TOWED VEHICLE AT A POINT LOCATED ABOVE THE ELEVATION OF THE LATERAL SUPPORT MEANS AND TOWARD THE REAR OF THE TOWED VEHICLE FROM SAID SUPPORT MEANS,
Claim 2
Dependent Claim
98 words
FOR A TOWED VEHICLE HAVING FORWARD AND REAR ENDS AND LATERAL SUPPORT MEANS AT LEAST PARTIALLY SUPPORTING THE FORWARD END OF THE VEHICLE FOR MOVEMENT OVER THE GROUND, DRAFT MEAND FOR TOWING THE VEHICLE, AN ELONGATED, FLEXIBLE, TENSION-TRANSMITTING ELEMENT IN OPERATIVE POSITION EXTENDING ABOVE SAID DRAFT MEANS, SAID TENSION-TRANSMITTING ELEMENT HAVING A FORWARD END ADAPTED TO BE DETACHABLY CONNECTED TO A TOWING VEHICLE, GUIDE MEANS FOR SAID TENSION-TRANSMITTING ELEMENT MOUNTED ON THE TOWED VEHICLE AT A POINT LOCATED ABOVE THE ELEVATION OF THE LATERAL SUPPORT MEANS AND TOWARD THE REAR OF THE TOWED VEHICLE FROM SAID SUPPORT MEANS,
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) | 1969-02-28 | 1969-08-30 | 1970-03-01 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1973-02-28 | 1973-08-30 | 1974-03-01 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1977-02-28 | 1977-08-30 | 1978-03-01 | $7700.00 | Window Closed / Lapsed |