US3107722A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Hatch covers having hydraulic means for moving the sections
Assignee: VON TELL TRADING CO AB
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Filing: 1961-10-03
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Granted: 1963-10-22
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Expires: 1981-10-03
Abstract
No abstract record available.
Inventors
- 👤 Bert R Larsson
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-30 18:13
CPC Classifications
B; B63; B63B; B63B19/00; B63B19/12; B63B19/14; B63B19/19; B63B19/197
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
160 words
IN A HATCH COVER COMPRISING AT LEAST THREE COVER SECTIONS INTERCONNECTED BY MEANS OF HINGES, ONE OF SAID SECTIONS, DENOTED THE FIRST SECTION, BY MEANS OF A PIVOT SHAFT CONNECTED TO THE HATCH COAMING, AND THE SECTION, DENOTED THE SECTION, NEIGHBOURING SAID FIRST SECTION, BEING FOLDABLE TO A POSITION IN WHICH THEIR UNDERSIDES ARE TURNED TOWARDS EACH OTHER AND THE NEXT SECTION, DENOTED THE THIRD SECTION, IN FOLDED POSITION SITUATED WITH ITS UPPER SIDE TURNED AGAINST THE UPPER SIDE OF SAID SECOND SECTION, THE DEVICE INCLUDING MEANS FOR FOLDING SAID FIRST AND SECOND SECTIONS AND HYDRAULIC MEANS COMPRISING A PISTON AND A CYLINDER JOURNALLED ON THE HATCH COAMING FOR FOLDING SAID THIRD SECTION AGAINST SAID SECTION, A PISTON ROD CONNECTED TO SAID PISTON ADAPTED AT THE END OF THE FOLDING MOVEMENT OF SAID FIRST AND SECOND SECTIONS TO BE BROUGHT TO ENGAGEMENT WITH A FITTING ATTACHED TO SAID THIRD COVER SECTION, SAID FITTING SITUATED RELATIVELY TO THE PIVOT OF THE
Claim 2
Dependent Claim
160 words
IN A HATCH COVER COMPRISING AT LEAST THREE COVER SECTIONS INTERCONNECTED BY MEANS OF HINGES, ONE OF SAID SECTIONS, DENOTED THE FIRST SECTION, BY MEANS OF A PIVOT SHAFT CONNECTED TO THE HATCH COAMING, AND THE SECTION, DENOTED THE SECTION, NEIGHBOURING SAID FIRST SECTION, BEING FOLDABLE TO A POSITION IN WHICH THEIR UNDERSIDES ARE TURNED TOWARDS EACH OTHER AND THE NEXT SECTION, DENOTED THE THIRD SECTION, IN FOLDED POSITION SITUATED WITH ITS UPPER SIDE TURNED AGAINST THE UPPER SIDE OF SAID SECOND SECTION, THE DEVICE INCLUDING MEANS FOR FOLDING SAID FIRST AND SECOND SECTIONS AND HYDRAULIC MEANS COMPRISING A PISTON AND A CYLINDER JOURNALLED ON THE HATCH COAMING FOR FOLDING SAID THIRD SECTION AGAINST SAID SECTION, A PISTON ROD CONNECTED TO SAID PISTON ADAPTED AT THE END OF THE FOLDING MOVEMENT OF SAID FIRST AND SECOND SECTIONS TO BE BROUGHT TO ENGAGEMENT WITH A FITTING ATTACHED TO SAID THIRD COVER SECTION, SAID FITTING SITUATED RELATIVELY TO THE PIVOT OF THE
References Cited (Backward Citations)
No citation records indexed.
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1966-10-21 | 1967-04-22 | 1967-10-22 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1970-10-21 | 1971-04-22 | 1971-10-22 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1974-10-21 | 1975-04-22 | 1975-10-22 | $7700.00 | Window Closed / Lapsed |