Patent US3249956A successfully refreshed from Google Patents.
US3249956A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Manually operated dockboard
Assignee: American Welding & Engineering
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Filing: 1963-10-15
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Granted: 1966-05-10
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Expires: 1983-10-15
Abstract
No abstract record available.
Inventors
- 👤 Anthony J Zajac
- 👤 Amico Alfred E De
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-01 19:36
CPC Classifications
B; B65; B65G; B65G69/00; B65G69/28; B65G69/2805; B65G69/2811; B65G69/2835; B65G69/2841
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
153 words
AN ADJUSTABLE LOADING RAMP COMPRISING: (A) A FRAME, (B) A RAMP PIVOTALLY CONNECTED AT ONE END TO THE FRAME FOR SWINGING IN A VERTICAL PLANE, (C) A LIP PIVOTALLY CONNECTED TO THE OTHER END OF THE RAMP, (D) MEANS FOR SWINGING THE LIP FROMA DEPENDING POSITION TO AN OUTWARDLY EXTENDING POSITION, (E) LATCH MEANS FOR HOLDING THE LIP IN SAID OUTWARDLY EXTENDING POSITION, (F) AND MANUAL RELEASE MEANS FOR SAID LATCH MEANS COMPRISING: (1) A FOOT ACTUATED PUSH BUTTON MOUNTED AT A FOOT ACCESSIBLE POSITION ON SAID RAMP, (2) AND TRIGGER MEANS INTERCONNECTING SAID BUTTON WITH SAID LATCH MEANS, (G) SAID LATCH MEANS FURTHER COMPRISING: (1) AN ABUTMENT ON THE UNDERSURFACE OF THE RAMP, (2) A LATCH ARM ON THE LIP, (H) SAID TRIGGER MEANS BEING RESPONSIVE TO PUSH BUTTON ACTUATION FOR SHIFTING THE RELATIVE POSITIONS OF THE LATCH ARM AND THE ABUTMENT TO MOVE THE SAME OUT OF RANGE OF EACH OTHER.
Claim 2
Dependent Claim
153 words
AN ADJUSTABLE LOADING RAMP COMPRISING: (A) A FRAME, (B) A RAMP PIVOTALLY CONNECTED AT ONE END TO THE FRAME FOR SWINGING IN A VERTICAL PLANE, (C) A LIP PIVOTALLY CONNECTED TO THE OTHER END OF THE RAMP, (D) MEANS FOR SWINGING THE LIP FROMA DEPENDING POSITION TO AN OUTWARDLY EXTENDING POSITION, (E) LATCH MEANS FOR HOLDING THE LIP IN SAID OUTWARDLY EXTENDING POSITION, (F) AND MANUAL RELEASE MEANS FOR SAID LATCH MEANS COMPRISING: (1) A FOOT ACTUATED PUSH BUTTON MOUNTED AT A FOOT ACCESSIBLE POSITION ON SAID RAMP, (2) AND TRIGGER MEANS INTERCONNECTING SAID BUTTON WITH SAID LATCH MEANS, (G) SAID LATCH MEANS FURTHER COMPRISING: (1) AN ABUTMENT ON THE UNDERSURFACE OF THE RAMP, (2) A LATCH ARM ON THE LIP, (H) SAID TRIGGER MEANS BEING RESPONSIVE TO PUSH BUTTON ACTUATION FOR SHIFTING THE RELATIVE POSITIONS OF THE LATCH ARM AND THE ABUTMENT TO MOVE THE SAME OUT OF RANGE OF EACH OTHER.
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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) | 1969-05-09 | 1969-11-08 | 1970-05-10 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1973-05-09 | 1973-11-08 | 1974-05-10 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1977-05-09 | 1977-11-08 | 1978-05-10 | $7700.00 | Window Closed / Lapsed |