US3870588A
Expired / Lapsed
US
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Method of constructing a heat insulating wall of foamed sulfur
Assignee: Eneos Globe Corp
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Filing: 1973-03-09
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Granted: 1975-03-11
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Expires: 1993-03-09
Abstract
Abstract A heat insulating wall of low temperature liquefied gas tanks substantially made of sulfur and some crack preventing materials such as glass wool, etc. included in said sulfur layer, the wall being formed by blowing melted sulfur including a foaming agent at the inner surface of an outer vessel of a rigid structure and having the sulfur foamed and solidified to form a substantially continuous wall.
Inventors
- 👤 Katsuro Yamamoto
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-25 08:44
CPC Classifications
F; F17; F17C; F17C3/00; F17C3/02; F17C3/04; F17C3/06; F17C2203/00; F17C2203/03; F17C2203/0304; F17C2203/0329; F17C2203/0333; F17C2203/0337; F17C2203/0341; F17C2203/0345; F17C2203/035; F17C2203/0354; F17C2203/06; F17C2203/0634; F17C2203/0636; F17C2203/0639; F17C2203/0678; F17C2221/00; F17C2221/03; F17C2221/032; F17C2221/035; F17C2223/00; F17C2223/01; F17C2223/0146; F17C2223/0153; F17C2223/03; F17C2223/033; F17C2260/00; F17C2260/03; F17C2260/031; F17C2260/033; Y; Y10; Y10S; Y10S220/00; Y10S220/901; Y10S220/902; Y10T; Y10T428/00; Y10T428/249921; Y10T428/249953; Y10T428/249967; Y10T428/249986
Claims Analysis
Total Claims: 10
Claim 1
Independent Claim
54 words
A METHOD CONSTRUCTING A HEAT INSULATING WALL OF FOAMED SULFUR WHICH COMPRISES BLOWING, IN THE FORM OF A LAYER, MELTED SULFUR COMTAINING A FOAMING AGENT TO THE INNER SURFACE OF AN OUTER VESSEL OF A RIGID STRUCTURE, SAID SULFUR FOAMING AND SOLIDIFYING UPON ITS APPLICATION TO SAID SURFACE TO FORM A SUBSTANTIALLY CONTINUOUS WALL.
Claim 2
Independent Claim
54 words
A METHOD CONSTRUCTING A HEAT INSULATING WALL OF FOAMED SULFUR WHICH COMPRISES BLOWING, IN THE FORM OF A LAYER, MELTED SULFUR COMTAINING A FOAMING AGENT TO THE INNER SURFACE OF AN OUTER VESSEL OF A RIGID STRUCTURE, SAID SULFUR FOAMING AND SOLIDIFYING UPON ITS APPLICATION TO SAID SURFACE TO FORM A SUBSTANTIALLY CONTINUOUS WALL.
Claim 3
Independent Claim
55 words
A method of constructing a heat insulating wall of foamed sulfur which comprises blowing, in the form of a layer, melted sulfur containing a foaming agent to the inner surface of an outer vessel of a rigid structure, said sulfur foaming and solidifying upon its application to said surface to form a substantially continuous wall.
Claim 4
Independent Claim
55 words
A method of constructing a heat insulating wall of foamed sulfur which comprises blowing, in the form of a layer, melted sulfur containing a foaming agent to the inner surface of an outer vessel of a rigid structure, said sulfur foaming and solidifying upon its application to said surface to form a substantially continuous wall.
Claim 5
Dependent Claim
13 words
The method of claim 1, wherein the melted sulfur contains a crack-preventing material.
Claim 6
Dependent Claim
12 words
The method of claim 2, wherein the crack-preventing material is glass wool.
Claim 7
Dependent Claim
21 words
The method of claim 1, wherein the layer of foamed sulfur is further covered with a layer of solid sulfur material.
Claim 8
Independent Claim
100 words
A method of constructing a high compression resisting, heat-insulating wall of foamed sulfur having a high degree of adhesiveness, a high resistance to cracking, is impermeable to fluids, especially low-temperature liquefied gasses and can be constructed at the site location which comprises blowing, in the form of a layer, melted sulfur containing a foaming agent and a crack-preventing material to a rigid structure, said sulfur foaming and solidifying upon its application to said rigid structure to form a substantially continuous wall thereon, said wall having a plurality of relatively small, substantially uniform, closed-cell voids uniformally dispersed throughout the sulfur layer.
Claim 9
Independent Claim
100 words
A method of constructing a high compression resisting, heat-insulating wall of foamed sulfur having a high degree of adhesiveness, a high resistance to cracking, is impermeable to fluids, especially low-temperature liquefied gasses and can be constructed at the site location which comprises blowing, in the form of a layer, melted sulfur containing a foaming agent and a crack-preventing material to a rigid structure, said sulfur foaming and solidifying upon its application to said rigid structure to form a substantially continuous wall thereon, said wall having a plurality of relatively small, substantially uniform, closed-cell voids uniformally dispersed throughout the sulfur layer.
Claim 10
Dependent Claim
12 words
The method of claim 5, wherein the crack-preventing material is glass wool.
References Cited (Backward Citations)
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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) | 1978-03-10 | 1978-09-09 | 1979-03-11 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1982-03-10 | 1982-09-09 | 1983-03-11 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1986-03-10 | 1986-09-09 | 1987-03-11 | $7700.00 | Window Closed / Lapsed |