US3221837A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Scaffold with folding stairway
Assignee: Up Right Inc
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Filing: 1963-10-07
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Granted: 1965-12-07
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Expires: 1983-10-07
Abstract
No abstract record available.
Inventors
- 👤 Robert E Fisher
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-30 11:38
CPC Classifications
E; E04; E04G; E04G5/00; E04G5/10; E04G1/00; E04G1/34
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
203 words
A FOLDING SCAFFOLD COMPRISING: FIRST AND SECOND GENERALLY RECTANGULAR END SECTIONS; A PLATFORM PIVOTALLY CONNECTED AT ONE END THEREOF TO ONE END OF SAID FIRST END SECTION AND PIVOTALLY CONNECTED AT ITS OTHER END TO ONE END OF SAID SECOND END SECTION FOR ENABLING SAID SCAFFOLD TO BE FOLDED INTO A PACKAGE WITH THE PLATFORM AND END SECTIONS PARALLEL TO ONE ANOTHER AND TO BE ERECTED WITH THE END SECTIONS BEING VERTICAL AND THE PLATFORM BEING HORIZONTAL; A STAIRWAY COMPRISING FIRST AND SECOND MEMBERS, THE FIRST MEMBER BEING LONGER THAN SAID SECOND MEMBER; HINGE MEANS CONNECTING SAID FIRST AND SECOND STAIRWAY MEMBERS FOR ENABLING SAID MEMBERS TO BE FOLDED FLAT AGAINST EACH OTHER AND TO BE UNFOLDED INTO LINEAR RELATION; MEANS PIVOTALLY CONNECTING THE END OF SAID FIRST STAIRWAY MEMBER OPPOSITE SAID HINGE MEANS TO AN END OF SAID FIRST END SECTION; MEANS ON THE END OF SAID SECOND STAIRWAY MEMBER OPPOSITE SAID HINGE FOR DETACHABLY CONNECTING SAID SECOND STAIRWAY MEMBER TO A DIAGONALLY OPPOSITE END OF SAID SECOND END SECTION WHEN SAID END SECTIONS ARE ERECTED AND SAID STAIRWAY MEMBERS ARE UNFOLDED; MEANS FOR SECURING SAID STAIRWAY MEMBERS WHEN FOLDED WITHIN SAID PACKAGE FORMED BY SAID PLATFORM AND END SECTIONS WHEN FOLDED.
Claim 2
Dependent Claim
203 words
A FOLDING SCAFFOLD COMPRISING: FIRST AND SECOND GENERALLY RECTANGULAR END SECTIONS; A PLATFORM PIVOTALLY CONNECTED AT ONE END THEREOF TO ONE END OF SAID FIRST END SECTION AND PIVOTALLY CONNECTED AT ITS OTHER END TO ONE END OF SAID SECOND END SECTION FOR ENABLING SAID SCAFFOLD TO BE FOLDED INTO A PACKAGE WITH THE PLATFORM AND END SECTIONS PARALLEL TO ONE ANOTHER AND TO BE ERECTED WITH THE END SECTIONS BEING VERTICAL AND THE PLATFORM BEING HORIZONTAL; A STAIRWAY COMPRISING FIRST AND SECOND MEMBERS, THE FIRST MEMBER BEING LONGER THAN SAID SECOND MEMBER; HINGE MEANS CONNECTING SAID FIRST AND SECOND STAIRWAY MEMBERS FOR ENABLING SAID MEMBERS TO BE FOLDED FLAT AGAINST EACH OTHER AND TO BE UNFOLDED INTO LINEAR RELATION; MEANS PIVOTALLY CONNECTING THE END OF SAID FIRST STAIRWAY MEMBER OPPOSITE SAID HINGE MEANS TO AN END OF SAID FIRST END SECTION; MEANS ON THE END OF SAID SECOND STAIRWAY MEMBER OPPOSITE SAID HINGE FOR DETACHABLY CONNECTING SAID SECOND STAIRWAY MEMBER TO A DIAGONALLY OPPOSITE END OF SAID SECOND END SECTION WHEN SAID END SECTIONS ARE ERECTED AND SAID STAIRWAY MEMBERS ARE UNFOLDED; MEANS FOR SECURING SAID STAIRWAY MEMBERS WHEN FOLDED WITHIN SAID PACKAGE FORMED BY SAID PLATFORM AND END SECTIONS WHEN FOLDED.
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) | 1968-12-06 | 1969-06-07 | 1969-12-07 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1972-12-06 | 1973-06-07 | 1973-12-07 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1976-12-06 | 1977-06-07 | 1977-12-07 | $7700.00 | Window Closed / Lapsed |