Patent US1259154A successfully refreshed from Google Patents.
Patent US3811593A successfully refreshed from Google Patents.
US3811593A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Double wall cargo tank having insulating secondary barrier
Assignee: MC MILLEN J ASS Inc
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Filing: 1971-01-27
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Granted: 1974-05-21
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Expires: 1991-01-27
Abstract
Abstract A double wall tank for transporting cryogenic materials by ship. The inner wall of the tank, the primary barrier, takes the form of an integral metallic corrugated structure. The outer wall of the tank, the secondary barrier, takes the form of a plurality of insulating panels structurally connected to the inner wall of the tank through the means of external webs and is in liquid and gastight relation to external face plates. There are disclosed several types of insulating panels, several procedures for attaching the panels to the external face plates, and several procedures for securing adjacent panels to one another.
Inventors
- 👤 T Bridges
- 👤 P Lalangas
- 👤 C Sjostrom
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-03 22:48
CPC Classifications
A; A47; A47G; A47G1/00; A47G1/06; A47G1/0605; A47G1/0611; F; F17; F17C; F17C3/00; F17C3/02; F17C3/025; A47G1/10; B; B63; B63B; B63B25/00; B63B25/02; B63B25/08; B63B25/12; B63B25/16; F17C2203/00; F17C2203/06; F17C2203/0602; F17C2203/0612; F17C2203/0626; F17C2203/0629; F17C2223/00; F17C2223/01; F17C2223/0146; F17C2223/0153; F17C2223/0161; F17C2270/00; F17C2270/01; F17C2270/0102; F17C2270/0105
Claims Analysis
Total Claims: 31
Claim 1
Independent Claim
105 words
A double wall tank for the transportation of cryogenic materials by ship, the tank comprising: a liquid and gasimpervious primary barrier defining a cargo space; a plurality of webs rigidly connected to the outer surface of said primary barrier and extending away from said cargo space; a plurality of thermally insulating panels spaced from said primary barrier and attached together to form a liquid and gas-impervious secondary barrier which will withstand the pressures developed by the cargo in the event of rupture in said primary barrier, said insulating panels being attached directly to said webs so that said insulating panels are supported by said webs.
Claim 2
Dependent Claim
105 words
A double wall tank for the transportation of cryogenic materials by ship, the tank comprising: a liquid and gasimpervious primary barrier defining a cargo space; a plurality of webs rigidly connected to the outer surface of said primary barrier and extending away from said cargo space; a plurality of thermally insulating panels spaced from said primary barrier and attached together to form a liquid and gas-impervious secondary barrier which will withstand the pressures developed by the cargo in the event of rupture in said primary barrier, said insulating panels being attached directly to said webs so that said insulating panels are supported by said webs.
Claim 3
Dependent Claim
26 words
The cargo tank recited in claim 1, wherein each thermally insulating panel is attached to a pair of adjacent webs in a liquid and gas-impervious manner.
Claim 4
Dependent Claim
43 words
The cargo tank recited in claim 2, wherein each thermally insulating panel is attached to a pair of adjacent webs in one direction; and wherein adjacent thermally insulating panels are attached to each other in a second direction transverse to said first direction.
Claim 5
Dependent Claim
146 words
The cargo tank recited in claim 1, and further comprising: an eXternal face plate rigidly secured to the extremity of each web remote from the primary barrier, each face plate lying in a plane substantially parallel to the plane of the adjacent primary barrier; wherein each thermally insulating panel is of a length less than the distance between adjacent webs but greater than the distance between adjacent edges of neighboring external face plates; wherein each thermally insulating panel is provided with a pair of ears adapted to abut the surfaces of neighboring face plates adjacent the primary barrier; means for securing said thermally insulating panels to said face plates; and means for interrupting the thermal path between the primary barrier and the surfaces of the thermally insulating panels remote from said primary barrier in the region of the face plates and intermediate adjacent thermally insulating panels.
Claim 6
Dependent Claim
60 words
The cargo tank recited in claim 4, wherein adjacent thermally insulating panels are attached to each other by: an elongated fastening member integral with one thermally insulating panel, having one end extending toward the adjacent thermally insulating panel and crossing the boundary between thermally insulating panels; and means associated with said adjacent thermally insulating panel integral with said fastening member.
Claim 7
Dependent Claim
98 words
The cargo tank recited in claim 5, wherein said fastening member takes the form of a bolt whose head is fixedly attached to said one thermally insulating panel, and whose threaded end extends into a recess defined in said adjacent thermally insulating panel, and a nut threaded onto said bolt so as to securely attach said one thermally insulating panel to said adjacent thermally insulating panel, the recess in said adjacent thermally insulating panel lying on the surface of said panel remote from said primary barrier and being of a dimension sufficient to allow operation on said nut.
Claim 8
Dependent Claim
53 words
The cargo tank recited in claim 5, and further comprising: a tongue defined in the edge of said one thermally insulating panel adjacent said adjacent thermally insulating panel; and a groove defined in the edge of said adjacent thermally insulating panel adapted to mate with said tongue in said one thermally insulating panel.
Claim 9
Dependent Claim
101 words
The cargo tank recited in claim 4, wherein adjacent thermally insulating panels are attached to each other by: tapered edges defined in adjacent surfaces of adjacent thermally insulating panels, said tapered edges facing the primary barrier; an insulating pad adapted to wedge between the tapered edges of said adjacent thermally insulating panels; an elongated fastening member integral with said insulating pad, and having a portion thereof extending from said insulating pad into the junction between adjacent thermally insulating panels; and means for urging the respective surfaces of said adjacent thermally insulating panels remote from said primary barrier toward said insulating pad.
Claim 10
Dependent Claim
97 words
The cargo tank recited in claim 4, wherein adjacent thermally insulating panels are attached to each other by: respective angled recesses defined in adjacent surfaces of adjacent thermally insulating panels, said angled recesses facing away from said primary barrier; an insulating pad in the form of two integral wedges, the shape of said pad and its wedges adapted to mate with said angled recesses in said adjacent thermally insulating panels; fastening members integral with each of said adjacent thermally insulating panels extending into said insulating pad; and means for urging said insulating pad toward said primary barrier.
Claim 11
Dependent Claim
68 words
The cargo tank set forth in claim 1, and further comprising: an external face plate rigidly secured to the extremity of each web remote from said primary barrier, the plane of each external face plate being substantially parallel to the plane of the primary barrier adjacent thereto; and wherein said thermally insulating panels are mounted on the surfaces of said external face plates remote from said primary barrier.
Claim 12
Dependent Claim
46 words
The cargo tank recited in claim 10, and fUrther comprising: means between adjacent thermally insulating panels, in the regions of said external face plates, for breaking the thermal path between the primary barrier and the surfaces of the thermally insulating panels remote from said primary barrier.
Claim 13
Dependent Claim
28 words
The cargo tank recited in claim 11, and further comprising: means for attaching each of said thermally insulating panels to a pair of adjacent face plates for securing.
Claim 14
Dependent Claim
59 words
The cargo tank recited in claim 12, wherein adjacent thermally insulating panels are attached to each other by: an elongated fastening member integral with one thermally insulating panel, having one end extending toward the adjacent thermally panel and crossing the boundary between thermally insulating panels; and means associated with said adjacent thermally insulating panel integral with said fastening member.
Claim 15
Dependent Claim
101 words
The cargo tank recited in claim 13, wherein said fastening member takes the form of a bolt whose head is fixedly attached to said one thermally insulating panel, and whose threaded end extends into a recess defined in said adjacent thermally insulating panel, and a nut threaded onto said bolt so as to securely attach said one thermally insulating panel to said adjacent thermally insulating panel, the recess in said adjacent thermally insulating panel lying on the surface of said adjacent thermally insulating panel remote from said primary barrier and being of a dimension sufficient to allow operations on said nut.
Claim 16
Dependent Claim
53 words
The cargo tank recited in claim 13, and further comprising: a tongue defined in the edge of said one thermally insulating panel adjacent said adjacent thermally insulating panel; and a groove defined in the edge of said adjacent thermally insulating panel adapted to mate with said tongue in said one thermally insulating panel.
Claim 17
Dependent Claim
101 words
The cargo tank recited in claim 12, wherein adjacent thermally insulating panels are attached to each other by: tapered edges defined in adjacent surfaces of adjacent thermally insulating panels, said tapered edges facing the primary barrier; an insulating pad adapted to wedge between the tapered edges of said adjacent thermally insulating panels; an elongated fastening member integral with said insulating pad, and having a portion thereof extending from said insulating pad into the junction between adjacent thermally insulating panels; and means for urging the respective surfaces of said adjacent thermally insulating panels remote from said primary barrier toward said insulating pad.
Claim 18
Dependent Claim
107 words
The cargo tank recited in claim 12, wherein adjacent thermally insulating panels are attached to each other by: respective angled recesses defined in adjacent surfaces of adjacent thermally insulating panels, said angled recesses facing away from said primary barrier; an insulating pad in the form of two integral wedges, the shape of said pad and its wedges adapted to mate with said angled recesses in said adjacent thermally insulating panels; when said panels are in contact with one another; fastening members integral with each of said adjacent thermally insulating panels extending into said angled insulating pad; and means for urging said insulating pad toward said primary barrier.
Claim 19
Dependent Claim
120 words
The cargo tank recited in claim 1, and further comprising: an external face plate rigidly mounted on the extremity of each web remote from the primary barrier, the plane of each external face plate lying substantially parallel to the plane of the adjacent primary barrier; wherein each thermally insulating panel is supported by and extends between a pair of adjacent external face plates, said thermally insulating panels being supported on the surfaces of the external face plates remote from said primary barrier and being spaced apart; means for maintaining the spacing between adjacent thermally insulating panels at the junctions between the corners of four panels; and fastening means positioned between and serving to maintain the spacing between thermally insulating panels.
Claim 20
Dependent Claim
97 words
The cargo tank recited in Claim 18, wherein each of said fastening means comprises: a cup-shaped member having side walls for maintaining the spacing between adjacent insulating panels, the side walls being square in cross section, and having an outwardly extending flange at the upper region thereof for contacting the surfaces of adjacent thermally insulating panels remote from said primary barrier and being square in plan; and means for generating a compressive force between the surfaces of adjacent thermally insulating panels remote from said primary barrier and surfaces of adjacent thermally insulating panels adjacent said primary barrier.
Claim 21
Dependent Claim
33 words
The cargo tank recited in claim 19, wherein said means for generating compressive forces takes the form of a bolt acting between the bottom of said cup-shaped member and an external face plate.
Claim 22
Dependent Claim
48 words
The cargo tank recited in claim 19, wherein said means for generating said compressive forces takes the form of a bolt acting between the bottom of said cup-shaped member and a structural member overlapping the junction between adjacent thermally insulating panels on their surfaces adjacent said primary barrier.
Claim 23
Dependent Claim
19 words
The cargo tank recited in claim 18, and further comprising: insulating material filling all spaces between adjacent insulating panels.
Claim 24
Dependent Claim
26 words
The cargo tank recited in claim 19, and further comprising: an insulating cover plate covering each cup-shaped member on its surface remote from said primary barrier.
Claim 25
Dependent Claim
100 words
The cargo tank recited in claim 1, and further comprising: an external face plate rigidly connected to the extremity of each of said webs remote from said primary barrier, the plane of each of said face plates being substantially parallel to the plane of the adjacent primary barrier; means for attaching each of said thermally insulating panels to a pair of adjacent face plates in a liquid and gas-impervious manner; and wherein the secondary barrier is defined by the surface of the thermally insulating panels adjacent said primary barrier and the surfaces of said face plates adjacent said primary barrier.
Claim 26
Dependent Claim
44 words
The cargo tank recited in claim 24, wherein each thermally insulating panel is attached to a pair of adjacent face plates in one direction; and wherein adjacent thermally insulating panels are attached to each other in a second direction transverse to said first direction.
Claim 27
Dependent Claim
20 words
The cargo tank recited in claim 1, wherein said primary barrier is corrugated; and wherein said secondary barrier is planar.
Claim 28
Dependent Claim
21 words
The cargo tank recited in claim 1, wherein said primary barrier is rigid; and wherein said secondary barrier is relatively flexible.
Claim 29
Dependent Claim
13 words
The cargo tank recited in claim 27, wherein said primary barrier is metallic.
Claim 30
Dependent Claim
62 words
The cargo tank recited in claim 18, wherein each of said fastening means comprises: a bearing member for contacting the surfaces of adjacent thermally insulating panels remote from said primary barrier; and means for generating a compressive force between the surfaces of adjacent thermally insulating panels remote from said primary barrier and surfaces of adjacent thermally insulating panels adjacent said primary barrier.
Claim 31
Dependent Claim
28 words
The cargo tank recited in claim 29, wherein said bearing member is planar at least in the region of contact with the surfaces of adjacent thermally insulating panels.
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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) | 1977-05-20 | 1977-11-19 | 1978-05-21 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1981-05-20 | 1981-11-19 | 1982-05-21 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1985-05-20 | 1985-11-19 | 1986-05-21 | $7700.00 | Window Closed / Lapsed |