Patent US3214137A successfully refreshed from Google Patents.
US3214137A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Landing gear for semi-trailers
Assignee: Individual
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Filing: 1963-12-04
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Granted: 1965-10-26
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Expires: 1983-12-04
Abstract
No abstract record available.
Inventors
- 👤 Darwin A Reichert
- 👤 Joseph S Nesbitt
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-02 18:04
CPC Classifications
B; B60; B60S; B60S9/00; B60S9/02; B60S9/04; B60S9/06; B60S9/08
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
142 words
A LANDING GEAR FOR SEMI-TRAILERS COMPRISING A SUPPORTING STRUT, A TELESCOPING MEMBER MOUNTED IN SAID STRUT, AND MEANS FOR EXTENDING SAID TELESCOPING MEMBER WITH RESPECT TO SAID STRUT BETWEEN A TRAVELING POSITION AND A SUPPORTING POSITION, AND FLUID LIFT MEANS SECURED TO THE LOWER END OF SAID TELESCOPING MEMBER, SAID FLUID LIFT MEANS COMPRISING UPPER AND LOWER ELEMENTS INTERCONNECTED FOR RELATIVE LONGITUDINAL MOVEMENT BETWEEN EXTENDED AND RETRACTED POSITIONS, AND TOGETHER CONSTITUTING A "POWER BOX" UNIT, THE UPPER OF SAID ELEMENTS BEING SECURED TO SAID TELESCOPING MEMBER, AND RETAINING MEANS ASSOCIATED WITH SAID ELEMENTS TO RETAIN THEM IN ASSEMBLED RELATION, WHEREBY WHEN SAID TELESCOPING MEMBER IS EXTENDED DOWNWARDLY TO BRING SAID LIFT MEANS INTO CONTACT WITH THE GROUND, ACTUATION OF SAID FLUID LIFT MEANS WILL RAISE THE TRAILER AN AMOUNT SUFFICIENT TO PERMIT COUPLING SAID SEMI-TRAILER TO, AND UNCOUPLING IT FROM, A TRACTOR.
Claim 2
Dependent Claim
142 words
A LANDING GEAR FOR SEMI-TRAILERS COMPRISING A SUPPORTING STRUT, A TELESCOPING MEMBER MOUNTED IN SAID STRUT, AND MEANS FOR EXTENDING SAID TELESCOPING MEMBER WITH RESPECT TO SAID STRUT BETWEEN A TRAVELING POSITION AND A SUPPORTING POSITION, AND FLUID LIFT MEANS SECURED TO THE LOWER END OF SAID TELESCOPING MEMBER, SAID FLUID LIFT MEANS COMPRISING UPPER AND LOWER ELEMENTS INTERCONNECTED FOR RELATIVE LONGITUDINAL MOVEMENT BETWEEN EXTENDED AND RETRACTED POSITIONS, AND TOGETHER CONSTITUTING A "POWER BOX" UNIT, THE UPPER OF SAID ELEMENTS BEING SECURED TO SAID TELESCOPING MEMBER, AND RETAINING MEANS ASSOCIATED WITH SAID ELEMENTS TO RETAIN THEM IN ASSEMBLED RELATION, WHEREBY WHEN SAID TELESCOPING MEMBER IS EXTENDED DOWNWARDLY TO BRING SAID LIFT MEANS INTO CONTACT WITH THE GROUND, ACTUATION OF SAID FLUID LIFT MEANS WILL RAISE THE TRAILER AN AMOUNT SUFFICIENT TO PERMIT COUPLING SAID SEMI-TRAILER TO, AND UNCOUPLING IT FROM, A TRACTOR.
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) | 1968-10-25 | 1969-04-26 | 1969-10-26 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1972-10-25 | 1973-04-26 | 1973-10-26 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1976-10-25 | 1977-04-26 | 1977-10-26 | $7700.00 | Window Closed / Lapsed |