Patent US3091816A successfully refreshed from Google Patents.
US3091816A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Folding stages
Assignee: WAYNE IRON WORKS
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Filing: 1960-09-07
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Granted: 1963-06-04
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Expires: 1980-09-07
Abstract
No abstract record available.
Inventors
- 👤 Charles H Wetzel
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-05 15:21
CPC Classifications
E; E04; E04H; E04H3/00; E04H3/10; E04H3/22; E04H3/24; E04H3/28
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
178 words
A FOLDING STAGE COMPRISING A PLATFORM CONSISTING OF AN EVEN NUMBER OF PLATFORM BOARDS ARRANGED SIDE-BYSIDE IN PAIRS, FIRST HINGE MEANS IN EACH PAIR INTERCONNECTING THE ADJOINING SIDE EDGES OF THE BOARDS THEREOF TO CAUSE THE ADJOINING SIDE EDGES OF THE BOARD TO FOLD UPWARDLY UPON FOLDING THEREOF, A SUPPORTING STRUCTURE FOR SAID PLATFORM COMPRISING AT LEAST TWO SERIES, EACH HAVING A LIKE NUMBER OF UPRIGHT PANELS PIVOTALLY CONNECTED IN PAIRS ON VERTIVAL AXES FOR LATERAL FOLDING AND EXTENSION ACCORDION-STYLE CORRESPONDING TO THE PAIRS OF PLATFORM BOARDS, AND MEANS CONNECTING THE PLATFORM BOARDS OF EACH PAIR OF THE PANELS OF THE CORRESPONDING PAIRS INCLUDING SECOND HINGE MEANS FOR SAID PLATFORM BOARDS AFFORDING SAID UPWARD FOLDING THEREOF AND A PIVOTAL CONNECTION AFFORDING SAID LATERAL FOLDING OF SAID UPRIGHT PANELS, SAID PANELS BEING LONGER THAN THE WIDTH OF SAID BOARDS TO BE DISPOSED ZIG-ZAG WHEN FULLY EXTENDED, SAID BOARDS IN THE EXTENDED POSITION THEREOF LYING FLAT ON THE UPPER EDGES OF SAID PANELS AND OPERATING AS A STRUCTURAL UNIT TO SYNCHRONIZE THE MOVEMENTS OF THE PANELS IN THE SEPARATE SERIES.
Claim 2
Dependent Claim
178 words
A FOLDING STAGE COMPRISING A PLATFORM CONSISTING OF AN EVEN NUMBER OF PLATFORM BOARDS ARRANGED SIDE-BYSIDE IN PAIRS, FIRST HINGE MEANS IN EACH PAIR INTERCONNECTING THE ADJOINING SIDE EDGES OF THE BOARDS THEREOF TO CAUSE THE ADJOINING SIDE EDGES OF THE BOARD TO FOLD UPWARDLY UPON FOLDING THEREOF, A SUPPORTING STRUCTURE FOR SAID PLATFORM COMPRISING AT LEAST TWO SERIES, EACH HAVING A LIKE NUMBER OF UPRIGHT PANELS PIVOTALLY CONNECTED IN PAIRS ON VERTIVAL AXES FOR LATERAL FOLDING AND EXTENSION ACCORDION-STYLE CORRESPONDING TO THE PAIRS OF PLATFORM BOARDS, AND MEANS CONNECTING THE PLATFORM BOARDS OF EACH PAIR OF THE PANELS OF THE CORRESPONDING PAIRS INCLUDING SECOND HINGE MEANS FOR SAID PLATFORM BOARDS AFFORDING SAID UPWARD FOLDING THEREOF AND A PIVOTAL CONNECTION AFFORDING SAID LATERAL FOLDING OF SAID UPRIGHT PANELS, SAID PANELS BEING LONGER THAN THE WIDTH OF SAID BOARDS TO BE DISPOSED ZIG-ZAG WHEN FULLY EXTENDED, SAID BOARDS IN THE EXTENDED POSITION THEREOF LYING FLAT ON THE UPPER EDGES OF SAID PANELS AND OPERATING AS A STRUCTURAL UNIT TO SYNCHRONIZE THE MOVEMENTS OF THE PANELS IN THE SEPARATE SERIES.
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) | 1966-06-03 | 1966-12-03 | 1967-06-04 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1970-06-03 | 1970-12-03 | 1971-06-04 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1974-06-03 | 1974-12-03 | 1975-06-04 | $7700.00 | Window Closed / Lapsed |