US3263322A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Method of producing shell roof structure
Assignee: Individual
•
Filing: 1959-01-07
•
Granted: 1966-08-02
•
Expires: 1979-01-07
Abstract
No abstract record available.
Inventors
- 👤 Arthur T Brown
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-27 08:23
CPC Classifications
E; E04; E04B; E04B7/00; E04B7/08; E04B7/10; E04B7/102; Y; Y10; Y10T; Y10T29/00; Y10T29/49; Y10T29/49616; Y10T29/49623; Y10T29/49826; Y10T29/49863
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
92 words
THE METHOD OF PRODUCING A SHELL ROOF STRUCTURE WHICH COMPRISES SUPERPOSING TWO SHEETS OF STRUCTURAL BENDABLE MATERIAL HAVING UNDULATIONS EXTENDING THE LENGTH OF EACH SHEET WITH THE UNDULATIONS OF THE TWO SHEETS RUNNING AT RIGHT ANGLES TO EACH OTHER, ROTATING OPPOSITE EDGES OF THE SHEETS IN OPPOSITE DIRECTIONS WHILE SAID SHEETS ARE IN MUTUAL CONTACT TO DEFINE A COMPOSITE STRUCTURE GENERALLY APPROXIMATING A HYPERBOLIC PARABOLOID, AND FIXEDLY SECURING SAID SHEETS TOGETHER AT A PLURALITY OF CONTACTING POINTS OF A PLURALITY OF THE UNDULATIONS OF EACH SHEET TO RETAIN SAID HYPERBOLIC PARABOLOIDAL SHAPE.
Claim 2
Independent Claim
92 words
THE METHOD OF PRODUCING A SHELL ROOF STRUCTURE WHICH COMPRISES SUPERPOSING TWO SHEETS OF STRUCTURAL BENDABLE MATERIAL HAVING UNDULATIONS EXTENDING THE LENGTH OF EACH SHEET WITH THE UNDULATIONS OF THE TWO SHEETS RUNNING AT RIGHT ANGLES TO EACH OTHER, ROTATING OPPOSITE EDGES OF THE SHEETS IN OPPOSITE DIRECTIONS WHILE SAID SHEETS ARE IN MUTUAL CONTACT TO DEFINE A COMPOSITE STRUCTURE GENERALLY APPROXIMATING A HYPERBOLIC PARABOLOID, AND FIXEDLY SECURING SAID SHEETS TOGETHER AT A PLURALITY OF CONTACTING POINTS OF A PLURALITY OF THE UNDULATIONS OF EACH SHEET TO RETAIN SAID HYPERBOLIC PARABOLOIDAL SHAPE.
References Cited (Backward Citations)
US32256A
Cited
US2093836A
Cited
US2654686A
Cited
GB781162A
Cited
US2912940A
Cited
US2891491A
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FR1159357A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1969-08-01 | 1970-01-31 | 1970-08-02 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1973-08-01 | 1974-01-31 | 1974-08-02 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1977-08-01 | 1978-01-31 | 1978-08-02 | $7700.00 | Window Closed / Lapsed |