US2730798A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Method of constructing a field-erected vapor-storage vessel
Assignee: Chicago Bridge and Iron Co
•
Filing: 1950-04-27
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Granted: 1956-01-17
•
Expires: 1970-04-27
Abstract
No abstract record available.
Inventors
- 👤 Lyle V Larsen
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-26 01:33
CPC Classifications
B; B21; B21D; B21D51/00; B21D51/16; B21D51/24; E; E04; E04H; E04H7/00; E04H7/02; E04H7/04; E04H7/14
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
120 words
THE METHOD OF CONSTRUCTING A FIELD ERECTED VAPOR STORAGE VESSEL HAVING A RELATIVELY THIN STEEL-PLATE SHELL OF GENERALLY SPHERICAL SHAPE, COMPRISING; ERECTING VESSEL SUPPORTING COLUMNS AT THE CONSTRUCTION SITE, A PAIR OF SAID COLUMNS BEING POSITIONED OPPOSITE EACH OTHER ON A HORIZONTAL AXIS OF THE SHELL, SECURING A HEAD PLATE TO EACH OF THE SAID TWO COLUMNS; FORMING THIN, FLEXIBLE, NOT SELF-SUPPORTING FLAT PRE-CUT SHELL PLATES SUBSTANTIALLY INTO A LUNELIKE SHAPE BUT NOT CURVED BETWEEN THE SIDES; SECURING THE SO-FORMED LUNE-LIKE SHAPE PLATES AT THE ENDS TO SAID HEAD PLATES AND AT THE SIDES TO OTHER OF SAID COLUMNS WITHOUT THE AID OF FALSEWORK SO THAT THE PLATES FORM A GENERALLY HORIZONTAL EQUATORIAL BELT PORTION OF THE VESSEL SHELL; FORM-
Claim 2
Independent Claim
120 words
THE METHOD OF CONSTRUCTING A FIELD ERECTED VAPOR STORAGE VESSEL HAVING A RELATIVELY THIN STEEL-PLATE SHELL OF GENERALLY SPHERICAL SHAPE, COMPRISING; ERECTING VESSEL SUPPORTING COLUMNS AT THE CONSTRUCTION SITE, A PAIR OF SAID COLUMNS BEING POSITIONED OPPOSITE EACH OTHER ON A HORIZONTAL AXIS OF THE SHELL, SECURING A HEAD PLATE TO EACH OF THE SAID TWO COLUMNS; FORMING THIN, FLEXIBLE, NOT SELF-SUPPORTING FLAT PRE-CUT SHELL PLATES SUBSTANTIALLY INTO A LUNELIKE SHAPE BUT NOT CURVED BETWEEN THE SIDES; SECURING THE SO-FORMED LUNE-LIKE SHAPE PLATES AT THE ENDS TO SAID HEAD PLATES AND AT THE SIDES TO OTHER OF SAID COLUMNS WITHOUT THE AID OF FALSEWORK SO THAT THE PLATES FORM A GENERALLY HORIZONTAL EQUATORIAL BELT PORTION OF THE VESSEL SHELL; FORM-
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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) | 1959-01-16 | 1959-07-18 | 1960-01-17 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1963-01-16 | 1963-07-18 | 1964-01-17 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1967-01-16 | 1967-07-18 | 1968-01-17 | $7700.00 | Window Closed / Lapsed |