US3255478A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Power-operated loading ramp
Assignee: Symington Wayne Corp
•
Filing: 1962-11-14
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Granted: 1966-06-14
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Expires: 1982-11-14
Abstract
No abstract record available.
Inventors
- 👤 Robert D Lambert
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-30 09:27
CPC Classifications
B; B65; B65G; B65G69/00; B65G69/28; B65G69/2805; B65G69/2811; B65G69/2817; B65G69/2823
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
182 words
A POWER-OPERATED RAMP FOR BRIDGING THE SPACE BETWEEN A VEHICLE BED AND A LOADING DOCK COMPRISING A PLATFORM, HINGE MEANS CONNECTING THE REAR OF SAID PLATFORM TO THE EDGE OF SAID LOADING DOCK, POWERED ELEVATING MEANS REACTING BETWEEN SAID LOADIN GDOCK AND SAID PLATFORM FOR ROTATING IT UPWARDLY ABOUT SAID HINGE MEANS, A CONTROL MEANS CONNECTED TO SAID POWERED ELEVATING MEANS FOR OPERATING IT TO RAISE SAID PLATFORM TO AN UPWARDLY INCLINED POSITION ABOVE THE BED OF A VEHICLE AND FOR LOWERING SAID PLATFORM TO REST UPON SAID BED, A LIP DISPOSED UPON THE FRONT OF SAID PLATFROM, HINGE MEANS CONNECTING SAID LIP TO ROTATE UPON THE FRONT OF SAID PLATFORM FROM A SUBSTANTIALLY VERTICAL CROSSOVER POSITION TO A BRIDGING POSITION IN WHICH IT FORMS A SUBSTANTIAL CONTINUATION OF SAID PLATFORM, SAID CONTROL MEANS INCLUDING LIP POSITION DETECTING MEANS CONNECTED TO SAID CONTROL MEANS FOR ACTUATING SAID CONTROL MEANS, SAID LIP POSITION DETECTING MEANS HAVING MEANS CONNECTED TO SAID LIP FOR ACTUATING SAID CONTROL MEANS TO CAUSE SAID POWERED ELEVATING MEANS TO RAISE SAID PLATFORM WHEN SAID LIP IS WITHIN A PREDETER-
Claim 2
Dependent Claim
182 words
A POWER-OPERATED RAMP FOR BRIDGING THE SPACE BETWEEN A VEHICLE BED AND A LOADING DOCK COMPRISING A PLATFORM, HINGE MEANS CONNECTING THE REAR OF SAID PLATFORM TO THE EDGE OF SAID LOADING DOCK, POWERED ELEVATING MEANS REACTING BETWEEN SAID LOADIN GDOCK AND SAID PLATFORM FOR ROTATING IT UPWARDLY ABOUT SAID HINGE MEANS, A CONTROL MEANS CONNECTED TO SAID POWERED ELEVATING MEANS FOR OPERATING IT TO RAISE SAID PLATFORM TO AN UPWARDLY INCLINED POSITION ABOVE THE BED OF A VEHICLE AND FOR LOWERING SAID PLATFORM TO REST UPON SAID BED, A LIP DISPOSED UPON THE FRONT OF SAID PLATFROM, HINGE MEANS CONNECTING SAID LIP TO ROTATE UPON THE FRONT OF SAID PLATFORM FROM A SUBSTANTIALLY VERTICAL CROSSOVER POSITION TO A BRIDGING POSITION IN WHICH IT FORMS A SUBSTANTIAL CONTINUATION OF SAID PLATFORM, SAID CONTROL MEANS INCLUDING LIP POSITION DETECTING MEANS CONNECTED TO SAID CONTROL MEANS FOR ACTUATING SAID CONTROL MEANS, SAID LIP POSITION DETECTING MEANS HAVING MEANS CONNECTED TO SAID LIP FOR ACTUATING SAID CONTROL MEANS TO CAUSE SAID POWERED ELEVATING MEANS TO RAISE SAID PLATFORM WHEN SAID LIP IS WITHIN A PREDETER-
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USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1969-06-13 | 1969-12-13 | 1970-06-14 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1973-06-13 | 1973-12-13 | 1974-06-14 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1977-06-13 | 1977-12-13 | 1978-06-14 | $7700.00 | Window Closed / Lapsed |