Patent US3680323A successfully refreshed from Google Patents.
US3680323A
Expired / Lapsed
US
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Tanker for liquified and/or compressed gas
Assignee: Kvaerner Brug AS
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Filing: 1970-10-15
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Granted: 1972-08-01
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Expires: 1990-10-15
Abstract
Abstract In a marine vessel having a hull structure for transporting or storing a cargo tank adapted to contain liquified and/or compressed gas, the tank is supported by an annular skirt having opposed edges integrally secured respectively to the hull structure and to a peripheral portion of the tank; the skirt minimizes the stresses transferred between the tank and the hull structure and is adapted to accommodate changes in the dimensional characteristics of the tank, due to temperature changes therein, independently of the hull structure.
Inventors
- 👤 Ragnar Bognaes
- 👤 Olav Solberg
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-01 03:56
CPC Classifications
F; F17; F17C; F17C13/00; F17C13/08; F17C13/082; B; B63; B63B; B63B25/00; B63B25/02; B63B25/08; B63B25/12; F17C2201/00; F17C2201/01; F17C2201/0104; F17C2201/0109; F17C2201/0128; F17C2205/00; F17C2205/01; F17C2205/0123; F17C2205/013; F17C2221/00; F17C2221/03; F17C2221/032; F17C2221/033; F17C2221/037; F17C2223/00; F17C2223/01; F17C2223/0146; F17C2223/0153; F17C2223/0161; F17C2270/00; F17C2270/01; F17C2270/0102; F17C2270/0105; Y; Y10; Y10S; Y10S220/00; Y10S220/901
Claims Analysis
Total Claims: 27
Claim 1
Independent Claim
102 words
Apparatus for storing liquified gas in combination with a cargo tank on board a marine vessel having a hull structure, said tank being generally curvilinear in cross section, and said apparatus comprising skirt means operably interconnecting said tank and said hull structure for supporting said tank on said structure, said skirt extending tangentially to said tank and having one end thereof integrally connected to said hull structure and the other end thereof integrally connected to said tank along a peripheral portion thereof, and separate means for maintaining a low temperature condition within said tank to maintain said gas in its liquid phase.
Claim 2
Dependent Claim
102 words
Apparatus for storing liquified gas in combination with a cargo tank on board a marine vessel having a hull structure, said tank being generally curvilinear in cross section, and said apparatus comprising skirt means operably interconnecting said tank and said hull structure for supporting said tank on said structure, said skirt extending tangentially to said tank and having one end thereof integrally connected to said hull structure and the other end thereof integrally connected to said tank along a peripheral portion thereof, and separate means for maintaining a low temperature condition within said tank to maintain said gas in its liquid phase.
Claim 3
Dependent Claim
21 words
Apparatus as in claim 1 wherein said skirt is tangentially secured to said peripheral portion throughout the full curvilinear dimension thereof.
Claim 4
Dependent Claim
20 words
Apparatus as in claim 1 wherein said curvilinear peripheral portion is circular and said skirt comprises a generally cylindrical member.
Claim 5
Dependent Claim
13 words
Apparatus as in claim 2 wherein said skirt comprises a generally frustro-conical member.
Claim 6
Dependent Claim
13 words
Apparatus as in claim 2 wherein said skirt is formed of plate construction.
Claim 7
Dependent Claim
51 words
Apparatus as in claim 2 including thermal insulation surrounding said skirt and extending from the point of juncture of said skirt with said tank towards said hull structure, said insulation having a decreasing thickness at points remote from said point of juncture whereby the temperature gradients in said skirt are predetermined.
Claim 8
Dependent Claim
18 words
Apparatus as in claim 2 wherein said skirt edges are welded to said tank and said hull structure.
Claim 9
Dependent Claim
34 words
Apparatus as in claim 7 wherein the edge of said skirt secured to said tank has a generally sinusoidal configuration whereby a relatively large weld area is provided between said skirt and said tank.
Claim 10
Dependent Claim
21 words
Apparatus as in claim 8 wherein said skirt has a plurality of apertures at predetermined locations to distribute stress concentrations therein.
Claim 11
Dependent Claim
46 words
Apparatus as in claim 2 including an annular ring of heat conductive material mounted between said tank and said skirt adjacent the point of juncture therebetween, whereby the temperature of said skirt adjacent said point of juncture is substantially the same as that of said tank.
Claim 12
Dependent Claim
102 words
Apparatus as in claim 2 wherein said skirt means comprises a first skirt portion secured at one edge to said tank and having an opposed edge remote from the point of juncture of said one edge with said tank, and a second skirt portion having one edge integrally secured to said hull structure and an opposed edge remote from the point of juncture of its first edge with said hull structure, said opposed edges of said first and second skirt portions being positioned adjacent each other and having mutually opposed flange portions operably connected with each other to form said skirt means.
Claim 13
Dependent Claim
40 words
Apparatus as in claim 11 wherein said flanges are operably connected by means for accomodating changes in the peripheral dimension of said first skirt portion with respect to said second skirt portion due to temperature variations in said cargo tank.
Claim 14
Dependent Claim
23 words
Apparatus as in claim 12 wherein said accommodating means prevents rotational movement and lateral movement of said flanges with respect to each other.
Claim 15
Dependent Claim
103 words
Apparatus as in claim 12 wherein said accommodating means comprises means for defining radial and circumferential tracks at predetermined locations on one of said flanges and a plurality of radial and circumferential extensions on the other of said flanges adapted to be inserted in said tracks, said radial extensions having substantially the same width as said radial tracks to prevent rotational and lateral movement between said flanges, and said Circumferential extensions having a width substantially less than the width of said circumferential tracks, thereby to accommodate changes in the radial dimensions of said first skirt portion with respect to said second skirt portion.
Claim 16
Dependent Claim
28 words
Apparatus as in claim 14 including a plurality of resilient pads secured to one of said flanges to provide resilient support between said first and second skirt portions.
Claim 17
Dependent Claim
24 words
Apparatus as in claim 3 wherein said tank is spherical and said skirt is tangentially connected thereto at the equatorial plane of the tank.
Claim 18
Dependent Claim
132 words
Apparatus for storing liquified gas in combination with a transport carrier, said apparatus comprising a cargo tank being generally curvilinear in cross section and adapted to contain liquified gas, said tank being a pressure vessel for containing said gas under at least atmospheric pressure, and means for supporting said tank on said carrier, said supporting meanS being integrally connected at one end to said carrier and integrally connected in tangential relation at its other end along a peripheral portion of said tank, to thermally isolate said tank from said carrier, and separate means for maintaining a low temperature condition within said tank to maintain said gas in its liquid phase, whereby changes in the dimensional characteristics of said tank due to temperature changes in sand tank are permitted independently of said carrier.
Claim 19
Dependent Claim
132 words
Apparatus for storing liquified gas in combination with a transport carrier, said apparatus comprising a cargo tank being generally curvilinear in cross section and adapted to contain liquified gas, said tank being a pressure vessel for containing said gas under at least atmospheric pressure, and means for supporting said tank on said carrier, said supporting meanS being integrally connected at one end to said carrier and integrally connected in tangential relation at its other end along a peripheral portion of said tank, to thermally isolate said tank from said carrier, and separate means for maintaining a low temperature condition within said tank to maintain said gas in its liquid phase, whereby changes in the dimensional characteristics of said tank due to temperature changes in sand tank are permitted independently of said carrier.
Claim 20
Dependent Claim
47 words
Apparatus as in claim 17 wherein said cargo tank has a generally circular cross section and said supporting means comprises a skirt integrally secured at one end to said tank in tangential relation and integrally secured at its opposed end to the structural members of said carrier.
Claim 21
Dependent Claim
27 words
Apparatus as in claim 18 wherein said tank includes an integral peripheral interface structure and said one edge of said skirt is integrally secured to said structure.
Claim 22
Dependent Claim
53 words
Apparatus as in claim 19 wherein said interface structure comprises an annular ring having an integral extension extending tangentially to said tank and defining a free end positioned a predetermined distance from said tank, said free end of said extension being integrally secured in abutting relation to said one end of said skirt.
Claim 23
Dependent Claim
38 words
Apparatus as in claim 20 wherein said interface structure has an annular groove formed therein between said ring and said extension, said groove having predetermined configuration whereby the stresses transmitted through said skirt to said tank are minimized.
Claim 24
Dependent Claim
80 words
Apparatus as in claim 19 wherein said interface structure comprises a pair of vertically spaced parallel structural members secured to the exterior periphery of said tanks, a plurality of generally vertically extending plates secured between said structural members, a pair of vertically spaced parallel structural members secured to the interior of said tank in positions opposite said exterior structural members and a plurality of vertically extending plates secured between said interior structural members to support said tank on said carrier.
Claim 25
Dependent Claim
25 words
Apparatus as in claim 19 including means for maintaining a low temperature condition within said cargo tank to maintain said gas in its liquid phase.
Claim 26
Dependent Claim
22 words
Apparatus as in claim 18 wherein said skirt member is welded to said cargo tank and the structural members of said carrier.
Claim 27
Dependent Claim
12 words
Apparatus as in claim 24 wherein said skirt is of plate construction.
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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) | 1975-08-01 | 1976-01-31 | 1976-08-01 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1979-08-01 | 1980-01-31 | 1980-08-01 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1983-08-01 | 1984-01-31 | 1984-08-01 | $7700.00 | Window Closed / Lapsed |