US3299456A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Dockboard
Assignee: Unarco Industries LLC
•
Filing: 1964-10-05
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Granted: 1967-01-24
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Expires: 1984-10-05
Abstract
No abstract record available.
Inventors
- 👤 Donald P Dieter
- 👤 Willie O Riggs
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-02 09:59
CPC Classifications
B; B65; B65G; B65G69/00; B65G69/28; B65G69/287; B65G69/2876; B65G69/2894; B65G69/2805; B65G69/2811; B65G69/2835; B65G69/2841; B65G69/2882
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
215 words
A DOCKBOARD COMPRISING A FRAME, A GENERALLY RECTANGULAR BOARD PIVOTED AT ONE END ON THE FRAME ON A HORIZONTAL AXIS FOR SWINGING VERTICALLY, A LIP PIVOTED ON THE FREE END OF THE BOARD TO SWING FROM A DEPENDING POSITION TO A RAISED POSITION FORMING AN EXTENSION OF THE BOARD, A STRUT PIVOTED ON THE FRAME AND EXTENDING TOWARD THE UNDERSIDE OF THE BOARD, A LATCH PLATE AND A CAM PLATE CARRIED BY THE BOARD ON ITS UNDERSIDE TO BE ENGAGED BY THE FREE END OF THE STRUT, RESILIENT MEANS URGING THE FREE END OF THE STRUT INTO ENGAGEMENT WITH THE LATCH AND CAM PLATES, THE CAM PLATE BEING FORMED WITH A SMOOTH SURFACE OVER WHICH THE FREE END OF THE STRUT CAN MOVE TO PERMIT FREE VERTICAL MOVEMENT OF THE BOARD, THE LATCH PLATE BEING FORMED WITH AT LEAST ONE LATCHING SURFACE ENGAGEABLE WITH THE FREE END OF THE STRUT TO LIMIT DOWNWARD MOVEMENT OF THE BOARD, THE PLATES BEING MOVABLE RELATIVE TO EACH OTHER, AND CONTROL MEANS OPERABLE IN CONJUNCTION WITH MOVEMENT OF THE LIP TO MOVE THE PLATES RELATIVE TO EACH OTHER THEREBY TO POSITION THE PLATES SO THAT THE STRUT WILL ENGAGE THE CAM PLATE WHEN THE LIP IS RAISED AND THE LATCH PLATE WHEN THE LIP IS IN ITS DEPENDING POSITION.
Claim 2
Dependent Claim
215 words
A DOCKBOARD COMPRISING A FRAME, A GENERALLY RECTANGULAR BOARD PIVOTED AT ONE END ON THE FRAME ON A HORIZONTAL AXIS FOR SWINGING VERTICALLY, A LIP PIVOTED ON THE FREE END OF THE BOARD TO SWING FROM A DEPENDING POSITION TO A RAISED POSITION FORMING AN EXTENSION OF THE BOARD, A STRUT PIVOTED ON THE FRAME AND EXTENDING TOWARD THE UNDERSIDE OF THE BOARD, A LATCH PLATE AND A CAM PLATE CARRIED BY THE BOARD ON ITS UNDERSIDE TO BE ENGAGED BY THE FREE END OF THE STRUT, RESILIENT MEANS URGING THE FREE END OF THE STRUT INTO ENGAGEMENT WITH THE LATCH AND CAM PLATES, THE CAM PLATE BEING FORMED WITH A SMOOTH SURFACE OVER WHICH THE FREE END OF THE STRUT CAN MOVE TO PERMIT FREE VERTICAL MOVEMENT OF THE BOARD, THE LATCH PLATE BEING FORMED WITH AT LEAST ONE LATCHING SURFACE ENGAGEABLE WITH THE FREE END OF THE STRUT TO LIMIT DOWNWARD MOVEMENT OF THE BOARD, THE PLATES BEING MOVABLE RELATIVE TO EACH OTHER, AND CONTROL MEANS OPERABLE IN CONJUNCTION WITH MOVEMENT OF THE LIP TO MOVE THE PLATES RELATIVE TO EACH OTHER THEREBY TO POSITION THE PLATES SO THAT THE STRUT WILL ENGAGE THE CAM PLATE WHEN THE LIP IS RAISED AND THE LATCH PLATE WHEN THE LIP IS IN ITS DEPENDING POSITION.
References Cited (Backward Citations)
US3137017A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1970-01-23 | 1970-07-25 | 1971-01-24 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1974-01-23 | 1974-07-25 | 1975-01-24 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1978-01-23 | 1978-07-25 | 1979-01-24 | $7700.00 | Window Closed / Lapsed |