US3248084A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Semi-trailer landing gear assembly
Assignee: Doosan Bobcat North America Inc
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Filing: 1964-10-14
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Granted: 1966-04-26
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Expires: 1984-10-14
Abstract
No abstract record available.
Inventors
- 👤 Hammond Evan
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-04 14:41
CPC Classifications
B; B60; B60D; B60D1/00; B60D1/58; B60D1/66; B60S; B60S9/00; B60S9/14; B60S9/16
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
194 words
FOR USE WITH A SEMI-TRAILER, A LANDING GEAR ASSEMBLY COMPRISING A LANDING GEAR CONNECTED TO THE SEMI-TRAILER FOR RELATIVE FORE AND AFT MOVEMENT, THE SAID LANDING GEAR INCLUDING GROUND ENGAGING MEANS ACTUATABLE BETWEEN RAISED AND LOWERED POSITIONS AND MEANS FOR RAISING AND LOWERING THE SAID GROUND ENGAGING MEANS BETWEEN THE SAID POSITIONS, AND MEANS CONNECTED TO THE SAID LANDING GEAR AND THE SEMI-TRAILER AND RESPONSIVE TO OPERATION OF THE SAID RAISING AND LOWERING MEANS FOR ACTUATING THE SAID LANDING GEAR FORWARDLY AND REARWARDLY RELATIVE TO THE SEMI-TRAILER, THE SAID LAST-MENTIONED MEANS INCLUDING A SUPPORT MEMBER FIXED TO THE SEMI-TRAILER, A SCREW CONNECTED TO THE SAID LANDING GEAR SO THAT OPERATION OF THE SAID RAISING AND LOWERING MEANS CAUSES ROTATION OF THE SAID SCREW, A FIRST THREADED MEMBER ENGAGABLE BY THE SAID SCREW AND CONNECTED TO THE SAID SUPPORT MEMBER, MEANS FOR MAINTAINING THE SAID THREADED MEMBER AT A PREDETERMINED LOCATION RELATIVE TO THE SAID SUPPORT MEMBER, STOP MEANS CONNECTED TO THE SAID SUPPORT MEMBER, AND A SECOND THREADED MEMBER ENGAGED BY THE SAID SCREW AND CONNECTED TO THE SAID SUPPORT MEMBER FOR RECIPROCAL AXIAL MOVEMENT BETWEEN THE SAID FIRST THREADED MEMBER AND STOP MEANS.
Claim 2
Dependent Claim
194 words
FOR USE WITH A SEMI-TRAILER, A LANDING GEAR ASSEMBLY COMPRISING A LANDING GEAR CONNECTED TO THE SEMI-TRAILER FOR RELATIVE FORE AND AFT MOVEMENT, THE SAID LANDING GEAR INCLUDING GROUND ENGAGING MEANS ACTUATABLE BETWEEN RAISED AND LOWERED POSITIONS AND MEANS FOR RAISING AND LOWERING THE SAID GROUND ENGAGING MEANS BETWEEN THE SAID POSITIONS, AND MEANS CONNECTED TO THE SAID LANDING GEAR AND THE SEMI-TRAILER AND RESPONSIVE TO OPERATION OF THE SAID RAISING AND LOWERING MEANS FOR ACTUATING THE SAID LANDING GEAR FORWARDLY AND REARWARDLY RELATIVE TO THE SEMI-TRAILER, THE SAID LAST-MENTIONED MEANS INCLUDING A SUPPORT MEMBER FIXED TO THE SEMI-TRAILER, A SCREW CONNECTED TO THE SAID LANDING GEAR SO THAT OPERATION OF THE SAID RAISING AND LOWERING MEANS CAUSES ROTATION OF THE SAID SCREW, A FIRST THREADED MEMBER ENGAGABLE BY THE SAID SCREW AND CONNECTED TO THE SAID SUPPORT MEMBER, MEANS FOR MAINTAINING THE SAID THREADED MEMBER AT A PREDETERMINED LOCATION RELATIVE TO THE SAID SUPPORT MEMBER, STOP MEANS CONNECTED TO THE SAID SUPPORT MEMBER, AND A SECOND THREADED MEMBER ENGAGED BY THE SAID SCREW AND CONNECTED TO THE SAID SUPPORT MEMBER FOR RECIPROCAL AXIAL MOVEMENT BETWEEN THE SAID FIRST THREADED MEMBER AND STOP 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) | 1969-04-25 | 1969-10-25 | 1970-04-26 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1973-04-25 | 1973-10-25 | 1974-04-26 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1977-04-25 | 1977-10-25 | 1978-04-26 | $7700.00 | Window Closed / Lapsed |