Patent US3215301A successfully refreshed from Google Patents.
US3215301A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Expansible metal sheets
Assignee: Conch International Methane Ltd
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Filing: 1962-11-06
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Granted: 1965-11-02
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Expires: 1982-11-06
Abstract
Abstract 923,777. Metal sheet. CONCH INTERNATIONAL METHANE Ltd. Nov. 21, 1961, No. 41535/61. Class 20 (2). [Also in Groups XXII and XXVIII] Expansible metal sheet, i.e. sheet which when fully restrained and subjected to low temperatures will not suffer any stress exceeding its elastic limit, comprises a plurality of pan-shaped modular sections 4 arranged side by side and end to end and a plurality of conical or pyramidal corner metal members 7 welded together along their edges 10 (see Group XXII). Stainless steel, aluminium or aluminium alloy materials are used. U.S.A. Specification 2,971,667 is referred to.
Inventors
- 👤 Armstrong Edward
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-01 16:39
CPC Classifications
F; F17; F17C; F17C3/00; F17C3/02; F17C3/025; F17C3/027; F17C2201/00; F17C2201/01; F17C2201/0147; F17C2201/0157; F17C2203/00; F17C2203/06; F17C2203/0634; F17C2203/0636; F17C2203/0639; F17C2203/0643; F17C2203/0646; F17C2203/0648; F17C2209/00; F17C2209/22; F17C2209/221; F17C2221/00; F17C2221/01; F17C2221/014; F17C2221/03; F17C2221/032; F17C2221/033; F17C2223/00; F17C2223/01; F17C2223/0146; F17C2223/0153; F17C2223/0161; F17C2223/03; F17C2223/033
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
134 words
EXPANSIBLE METAL SHEET COMPRISING A PLURALITY OF RECTANGULAR PAN-SHAPED MODULAR SECTIONS WITH SMOOTHLY OUTWARDLY CONTINUOUSLY CURVING ROUNDED CORNERS ARRANGED IN SIDE-BY-SIDE AND END-TO-END RELATIONSHIP AND DEFINING SPACES BETWEEN EACH FOUR ADJACNET CORNERS, WHICH SECTIONS ARE WELDED TOGETHER ALONG THE TOPS OF ADJACENT STRAIGHT EDGES, AND IN EACH OF THE SAPCES, GENERALLY CONCAVE METAL MEMBERS WELDED TO THE TOPS OF THE EDGES OF THE FOUR ADJACENT ROUNDED CORNERS SO AS TO COMPLETELY AND IMPERMEABLY FILL THE SPACE, THE RADIUS OF THE CURVATURE OF SAID ROUNDED CORNERS BEING MANY TIMES GREATER THAN THE THICKNESS OF THE SHEET MATERIAL, SO THAT THERMAL EXPANSION OR CONTRACTION OF THE STRAIGHT EDGES OF THE PANS ONLY SLIGHTLY CHANGES THE CURVATURE OF SAID ARCUATE EDGES ALONG THE WELD LINE WITHOUT PRODUCING CONCENTRATED STRESSES AT ANY ONE LOCALIZED REGION OF THE WELD.
Claim 2
Dependent Claim
134 words
EXPANSIBLE METAL SHEET COMPRISING A PLURALITY OF RECTANGULAR PAN-SHAPED MODULAR SECTIONS WITH SMOOTHLY OUTWARDLY CONTINUOUSLY CURVING ROUNDED CORNERS ARRANGED IN SIDE-BY-SIDE AND END-TO-END RELATIONSHIP AND DEFINING SPACES BETWEEN EACH FOUR ADJACNET CORNERS, WHICH SECTIONS ARE WELDED TOGETHER ALONG THE TOPS OF ADJACENT STRAIGHT EDGES, AND IN EACH OF THE SAPCES, GENERALLY CONCAVE METAL MEMBERS WELDED TO THE TOPS OF THE EDGES OF THE FOUR ADJACENT ROUNDED CORNERS SO AS TO COMPLETELY AND IMPERMEABLY FILL THE SPACE, THE RADIUS OF THE CURVATURE OF SAID ROUNDED CORNERS BEING MANY TIMES GREATER THAN THE THICKNESS OF THE SHEET MATERIAL, SO THAT THERMAL EXPANSION OR CONTRACTION OF THE STRAIGHT EDGES OF THE PANS ONLY SLIGHTLY CHANGES THE CURVATURE OF SAID ARCUATE EDGES ALONG THE WELD LINE WITHOUT PRODUCING CONCENTRATED STRESSES AT ANY ONE LOCALIZED REGION OF THE WELD.
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) | 1968-11-01 | 1969-05-03 | 1969-11-02 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1972-11-01 | 1973-05-03 | 1973-11-02 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1976-11-01 | 1977-05-03 | 1977-11-02 | $7700.00 | Window Closed / Lapsed |