US4073976A
Expired / Lapsed
US
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Method for capping cellular glass blocks for the load bearing insulation of liquefied gas storage tanks
Assignee: Pittsburgh Corning LLC
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Filing: 1975-11-03
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Granted: 1978-02-14
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Expires: 1995-11-03
Abstract
Abstract Load bearing insulation for the base of liquefied gas storage tanks comprises a plurality of courses of cellular glass blocks having horizontal cut faces with open hemispherical cells thereon. A layer of irreversably compressible inorganic particulate material, such as vermiculite, is applied by rolling or screeding on and between each course of cellular glass blocks. The vermiculite particles penetrate the plurality of open hemispherical cells to completely fill the cells. During the application of the vermiculite capping layer, particles are precompressed to bring the vermiculite particles into intimate contact with the open cells. The precompression of the vermiculite capping layer mechanically adheres the particles to the cellular glass block cut face to thus form an irreversibly compressible capping layer on and in between the cellular glass blocks having a compressive strength in the range between about 90 p.s.i. to 180 p.s.i.
Inventors
- 👤 Stanley J. Dudzinski
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-05 12:02
CPC Classifications
F; F17; F17C; F17C13/00; F17C13/001; F17C2203/00; F17C2203/03; F17C2203/0304; F17C2203/0337; F17C2203/0341; F17C2203/06; F17C2203/0634; F17C2203/0678; F17C2221/00; F17C2221/01; F17C2221/011; F17C2221/03; F17C2221/032; F17C2221/033; F17C2223/00; F17C2223/01; F17C2223/0146; F17C2223/0153; F17C2223/0161; Y; Y10; Y10S; Y10S220/00; Y10S220/901; Y10T; Y10T428/00; Y10T428/249921; Y10T428/249953; Y10T428/249955; Y10T428/249956; Y10T428/249957; Y10T428/249981
Claims Analysis
Total Claims: 17
Claim 1
Independent Claim
121 words
A method for capping cellular glass blocks for use as load bearing insulation of liquefied gas storage tanks consisting essentially of, applying a layer of irreversably compressible inorganic particulate material to the surface of a layer formed from a plurality of cellular glass blocks each having a cut face forming a plurality of open hemispherical cells thereon, said plurality of cellular glass blocks forming a layer of said load bearing insulation, penetrating said plurality of open hemispherical cells with said layer of inorganic particulate material to completely fill said open cells, and compressing said layer of inorganic particulate material to form a substantially planar surface of said inorganic particulate material having a preselected thickness on said cellular glass block cut faces.
Claim 2
Independent Claim
121 words
A method for capping cellular glass blocks for use as load bearing insulation of liquefied gas storage tanks consisting essentially of, applying a layer of irreversably compressible inorganic particulate material to the surface of a layer formed from a plurality of cellular glass blocks each having a cut face forming a plurality of open hemispherical cells thereon, said plurality of cellular glass blocks forming a layer of said load bearing insulation, penetrating said plurality of open hemispherical cells with said layer of inorganic particulate material to completely fill said open cells, and compressing said layer of inorganic particulate material to form a substantially planar surface of said inorganic particulate material having a preselected thickness on said cellular glass block cut faces.
Claim 3
Dependent Claim
49 words
A method for capping cellular glass blocks for use as load bearing insulation of liquefied gas storage tanks as set forth in claim 1 which includes, compressing said layer of inorganic particulate material under a preselected compressive force into intimate contact with said cellular glass block open hemispherical cells.
Claim 4
Dependent Claim
53 words
A method for capping cellular glass blocks for use as load bearing insulation of liquefied gas storage tanks as set forth in claim 2 which includes, precompressing said layer of inorganic particulate material with a compressive force up to 42 p.s.i. to bring the inorganic particles into intimate contact with said open cells.
Claim 5
Dependent Claim
64 words
A method for capping cellular glass blocks for use as load bearing insulation of liquefied gas storage tanks as set forth in claim 1 which includes, applying an inorganic particulate layer of vermiculite onto said cellular glass block cut face where a major portion of the particles have a spectrum of sizes in the range between about 8 to 50 Tyler standard screen mesh.
Claim 6
Dependent Claim
48 words
A method for capping cellular glass blocks for use as load bearing insulation of liquefied gas storage tanks as set forth in claim 4 which includes, said cellular glass block with said vermiculite layer having a compressive strength in the range between about 90 p.s.i. to 180 p.s.i.
Claim 7
Dependent Claim
56 words
A method for capping cellular glass blocks for use as load bearing insulation of liquefied gas storage tanks as set forth in claim 1 which includes, spreading said inorganic particulate material onto said cellular glass block cut face to form a capping layer having a thickness in the range between about 3/16 inch to 1/4 inch.
Claim 8
Dependent Claim
41 words
A method for capping cellular glass blocks for use as load bearing insulation of liquefied gas storage tanks as set forth in claim 6 which includes, spreading said capping layer onto said cellular glass block cut face by rolling or screeding.
Claim 9
Dependent Claim
51 words
A method for capping cellular glass blocks for use as load bearing insulation of liquefied gas storage tanks as set forth in claim 1 which includes, a plurality of layers of cellular glass blocks positioned in overlying relation to each other with layers of said irreversably compressible inorganic particulate material therebetween.
Claim 10
Independent Claim
149 words
A method for capping cellular glass blocks for use as load bearing insulation of liquefied gas storage tanks comprising, applying a layer of irreversably compressible inorganic particulate material to the surface of a layer formed from a plurality of cellular glass blocks each having a cut face forming a plurality of open hemispherical cells thereon, said plurality of cellular glass blocks forming a layer of said load bearing insulation, forming a plurality of layers formed from said plurality of cellular glass blocks positioned in overlying relation to each other with layers of said irreversably compressible inorganic particulate material therebetween, penetrating said plurality of open hemispherical cells with said layers of inorganic particulate material to completely fill said open cells, and compressing said layers of inorganic particulate material to form a substantially planar surface of said inorganic particulate material having a preselected thickness on said cellular glass block cut faces.
Claim 11
Independent Claim
149 words
A method for capping cellular glass blocks for use as load bearing insulation of liquefied gas storage tanks comprising, applying a layer of irreversably compressible inorganic particulate material to the surface of a layer formed from a plurality of cellular glass blocks each having a cut face forming a plurality of open hemispherical cells thereon, said plurality of cellular glass blocks forming a layer of said load bearing insulation, forming a plurality of layers formed from said plurality of cellular glass blocks positioned in overlying relation to each other with layers of said irreversably compressible inorganic particulate material therebetween, penetrating said plurality of open hemispherical cells with said layers of inorganic particulate material to completely fill said open cells, and compressing said layers of inorganic particulate material to form a substantially planar surface of said inorganic particulate material having a preselected thickness on said cellular glass block cut faces.
Claim 12
Dependent Claim
49 words
A method for capping cellular glass blocks for use as load bearing insulation of liquefied gas storage tanks as set forth in claim 9 which includes, compressing said layers of inorganic particulate material under a preselected compressive force into intimate contact with said cellular glass block open hemispherical cells.
Claim 13
Dependent Claim
53 words
A method for capping cellular glass blocks for use as load bearing insulation of liquefied gas storage tanks as set forth in claim 10 which includes, precompressing said layers of inorganic particulate material with a compressive force up to 42 p.s.i to bring the inorganic particles into intimate contact with said open cells.
Claim 14
Dependent Claim
63 words
A method for capping cellular glass blocks for use as load bearing insulation of liquefied gas storage tanks as set forth in claim 9 which includes, applying inorganic particulate layers of vermiculite onto said cellular glass block cut face where a major portion of the particles have a spectrum of sizes in the range between about 8 to 50 Tyler standard screen mesh.
Claim 15
Dependent Claim
48 words
A method for capping cellular glass blocks for use as load bearing insulation of liquefied gas storage tanks as set forth in claim 12 which includes, said cellular glass block with said vermiculite layers having a compressive strength in the range between about 90 p.s.i. to 180 p.s.i.
Claim 16
Dependent Claim
55 words
A method for capping cellular glass blocks for use as load bearing insualtion of liquefied gas storage tanks as set forth in claim 9 which includes, spreading said inorganic particulate material onto said cellular glass block cut faces to form capping layers having a thickness in the range between about 3/16 inch to 1/4 inch.
Claim 17
Dependent Claim
41 words
A method for capping cellular glass blocks for use as load bearing insulation of liquefied gas storage tanks as set forth in claim 14 which includes, spreading said capping layers onto said cellular glass block cut faces by rolling or screeding.
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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) | 1981-02-13 | 1981-08-15 | 1982-02-14 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1985-02-13 | 1985-08-15 | 1986-02-14 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1989-02-13 | 1989-08-15 | 1990-02-14 | $7700.00 | Window Closed / Lapsed |