US3380147A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Method of making a circular building structure
Assignee: ELDON O MCDONALD
•
Filing: 1966-03-25
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Granted: 1968-04-30
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Expires: 1986-03-25
Abstract
No abstract record available.
Inventors
- 👤 Eldon O Mcdonald
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-02 22:01
CPC Classifications
B; B21; B21C; B21C37/00; B21C37/06; B21C37/12; E; E04; E04H; E04H7/00; E04H7/22; E04H7/24; E04H7/30; Y; Y10; Y10T; Y10T29/00; Y10T29/49; Y10T29/49826; Y10T29/49828; Y10T29/53; Y10T29/53526
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
197 words
THE METHOD OF MANUFACTURING A CIRCULAR STRUCTURE COMPRISING THE STEPS OF PLACING A NUMBER OF DRIVE ASSEMBLIES ON A PREFORMED BASE IN A CIRCLE OF PREDETERMINED DIAMETER SUBSTANTIALLY AT EQUAL DISTANCES APART, EACH DRIVE ASSEMBLY BEING LOCATED ABOVE THE BASE A DISTANCE GREATER THAN THE PRECEDING DRIVE ASSEMBLY WITH THE LAST DRIVE ASSEMBLY LOCATED A DISTANCE ABOVE THE FIRST DRIVE ASSEMBLY SUBSTANTIALLY EQUAL TO THE WIDTH OF THE SHEET METAL WHICH IS TO BE WOUND INTO THE SILO, FEEDING A STRIP OF SHEET MATERIAL HAVING A WIDTH SUBSTANTIALLY EQUAL TO THE DISTANCE BETWEEN THE FIRST AND LAST DRIVE ASSEMBLIES INTO THE FIRST DRIVE ASSEMBLY IN A VERTICAL POSITION, CONTINUOUSLY FEEDING THE STRIP THROUGH THE FIRST DRIVE ASSEMBLY AND THROUGH EACH SUBSEQUENT ASSEMBLY UNTIL THE LOWER EDGE PASSES THE LAST DRIVE ASSEMBLY AND COMES INTO CONTACT WITH THE TOP OF THE INCOMING SHEET STEEL, CONTINUOUSLY WELDING THE LOWER EDGE OF THE SHEET STEEL TO THE TOP OF THE INCOMING SHEET STEEL TO FORM A SPIRALLY WOUND CIRCLE, CONTINUOUSLY ROTATING SAID CIRCLE AND WELDING SHEET STEEL TO THE BOTTOM UNTIL IT REACHES THE DESIRED HEIGHT AND WELDING PREFORMED SECTIONS TO THE TOP AND BOTTOM OF THE SPIRALLY WOUND SECTION.
Claim 2
Independent Claim
197 words
THE METHOD OF MANUFACTURING A CIRCULAR STRUCTURE COMPRISING THE STEPS OF PLACING A NUMBER OF DRIVE ASSEMBLIES ON A PREFORMED BASE IN A CIRCLE OF PREDETERMINED DIAMETER SUBSTANTIALLY AT EQUAL DISTANCES APART, EACH DRIVE ASSEMBLY BEING LOCATED ABOVE THE BASE A DISTANCE GREATER THAN THE PRECEDING DRIVE ASSEMBLY WITH THE LAST DRIVE ASSEMBLY LOCATED A DISTANCE ABOVE THE FIRST DRIVE ASSEMBLY SUBSTANTIALLY EQUAL TO THE WIDTH OF THE SHEET METAL WHICH IS TO BE WOUND INTO THE SILO, FEEDING A STRIP OF SHEET MATERIAL HAVING A WIDTH SUBSTANTIALLY EQUAL TO THE DISTANCE BETWEEN THE FIRST AND LAST DRIVE ASSEMBLIES INTO THE FIRST DRIVE ASSEMBLY IN A VERTICAL POSITION, CONTINUOUSLY FEEDING THE STRIP THROUGH THE FIRST DRIVE ASSEMBLY AND THROUGH EACH SUBSEQUENT ASSEMBLY UNTIL THE LOWER EDGE PASSES THE LAST DRIVE ASSEMBLY AND COMES INTO CONTACT WITH THE TOP OF THE INCOMING SHEET STEEL, CONTINUOUSLY WELDING THE LOWER EDGE OF THE SHEET STEEL TO THE TOP OF THE INCOMING SHEET STEEL TO FORM A SPIRALLY WOUND CIRCLE, CONTINUOUSLY ROTATING SAID CIRCLE AND WELDING SHEET STEEL TO THE BOTTOM UNTIL IT REACHES THE DESIRED HEIGHT AND WELDING PREFORMED SECTIONS TO THE TOP AND BOTTOM OF THE SPIRALLY WOUND SECTION.
References Cited (Backward Citations)
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US2751672A
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US2986193A
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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) | 1971-04-30 | 1971-10-30 | 1972-04-30 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1975-04-30 | 1975-10-30 | 1976-04-30 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1979-04-30 | 1979-10-30 | 1980-04-30 | $7700.00 | Window Closed / Lapsed |