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US3373473A
Expired / Lapsed
US
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Method of making a self-supporting extension tower
Assignee: RALPH W KESLIN Inc
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Filing: 1966-12-01
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Granted: 1968-03-19
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Expires: 1986-12-01
Abstract
No abstract record available.
Inventors
- 👤 Ralph W Keslin
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-04 14:05
CPC Classifications
E; E04; E04H; E04H12/00; E04H12/18; E04H12/182; Y; Y10; Y10T; Y10T29/00; Y10T29/49; Y10T29/49616; Y10T29/49623; Y10T29/49631
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
122 words
A METHOD OF MANUFACTURING A TOWER SECTION COMPRISING THE STEPS OF FORMING A SERIES OF RECTANGULAR SIDE WALLS OR PANELS EACH OF FLAT SHEET MATERIAL OF RELATIVELY UNIFORM GAGE, CUTTING OUT TRIANGULARLY SHAPED AREAS ALONG THE LENGTH OF THE RECTANGULARLY SHAPED SHEET MATERIAL WHILE CONTEMPORAANEOUSLY WORKING AND ARCUATELY FORMING STRUTS PERIPHERALLY DEFINED BY THE CUT-OUT AREAS AND WHILE CONTEMPORANEOUSLY FORMING ANGLED LEGS EXTENDING CONTINUOUSLY ALONG THE LENGTH OF OPPOSITE MARGINS OF THE SHEET MATERIAL, ARRANGING THE THUS FORMED SIDE WALLS OR PANELS IN TUBULAR FORM WITH THE ANGLED LEGS ON ADJACENT SIDE WALLS OR PANELS BEING ENGAGED IN FACE-TO-FACE RELATION AND WITH THE LEGS EXTENDING OUTWARDLY AND AWAY FROM THE SIDE WALLS OR PANELS, AND SECURING THE ABUTTING LEGS IN UNITARY ASSEMBLY.
Claim 2
Independent Claim
122 words
A METHOD OF MANUFACTURING A TOWER SECTION COMPRISING THE STEPS OF FORMING A SERIES OF RECTANGULAR SIDE WALLS OR PANELS EACH OF FLAT SHEET MATERIAL OF RELATIVELY UNIFORM GAGE, CUTTING OUT TRIANGULARLY SHAPED AREAS ALONG THE LENGTH OF THE RECTANGULARLY SHAPED SHEET MATERIAL WHILE CONTEMPORAANEOUSLY WORKING AND ARCUATELY FORMING STRUTS PERIPHERALLY DEFINED BY THE CUT-OUT AREAS AND WHILE CONTEMPORANEOUSLY FORMING ANGLED LEGS EXTENDING CONTINUOUSLY ALONG THE LENGTH OF OPPOSITE MARGINS OF THE SHEET MATERIAL, ARRANGING THE THUS FORMED SIDE WALLS OR PANELS IN TUBULAR FORM WITH THE ANGLED LEGS ON ADJACENT SIDE WALLS OR PANELS BEING ENGAGED IN FACE-TO-FACE RELATION AND WITH THE LEGS EXTENDING OUTWARDLY AND AWAY FROM THE SIDE WALLS OR PANELS, AND SECURING THE ABUTTING LEGS IN UNITARY ASSEMBLY.
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) | 1971-03-19 | 1971-09-18 | 1972-03-19 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1975-03-19 | 1975-09-18 | 1976-03-19 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1979-03-19 | 1979-09-18 | 1980-03-19 | $7700.00 | Window Closed / Lapsed |