US3885595A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Conduit for cryogenic fluid transportation
Assignee: Rockwell Collins ElectroMechanical Systems Inc
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Filing: 1974-01-28
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Granted: 1975-05-27
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Expires: 1994-01-28
Abstract
Abstract A conduit section combinable in end-to-end relationship with a plurality of similar conduit sections to form a conduit for carrying cryogenic fluids. The end portions of each such conduit section are telescopable into and connectable to end portions of like conduit sections; each section has an inner pipe portion and a concentric outer pipe portion with thermal insulation therebetween; one end portion is frusto-conical, and the opposite portion is a female type adapted to receive said frusto-conical end in close fitting relationship. The said opposite end of each conduit section has a motion compensator secured thereto, the motion compensator being exposed only to external pressure when the conduit sections are connected together as by welding, and providing a gas and liquid cryogen seal while elastically compensating for relative motion between the outer and inner pipe portions due to temperature differences between the pipe portions.
Inventors
- 👤 Clarence John Gibson
- 👤 Kenneth Kimble
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-04 19:09
CPC Classifications
F; F16; F16L; F16L59/00; F16L59/14; F16L59/16; F16L59/18; F16L59/20; F16L59/188; Y; Y10; Y10S; Y10S285/00; Y10S285/904
Claims Analysis
Total Claims: 7
Claim 1
Independent Claim
138 words
A conduit section for use in a cryogenic fluid carrying conduit formed from a plurality of said sections, said conduit section having at its opposite ends a first end portion and a second end portion, said end portions being telescopable into and connectible to end portions of like conduit sections to thereby form a cryogenic fluid carrying conduit, said conduit section having an inner pipe portion and a concentric outer pipe portion with thermal insulation therebetween, the said first end portion being frusto-conical, and said second end portion having a motion compensator secured thereto, said motion compensator being exposed only to external pressure when said conduit sections are connected together, and providing a gas or liquid cryogen seal while elastically compensating for relative motion between said outer and inner pipe portions due to temperature differences between said portions.
Claim 2
Dependent Claim
138 words
A conduit section for use in a cryogenic fluid carrying conduit formed from a plurality of said sections, said conduit section having at its opposite ends a first end portion and a second end portion, said end portions being telescopable into and connectible to end portions of like conduit sections to thereby form a cryogenic fluid carrying conduit, said conduit section having an inner pipe portion and a concentric outer pipe portion with thermal insulation therebetween, the said first end portion being frusto-conical, and said second end portion having a motion compensator secured thereto, said motion compensator being exposed only to external pressure when said conduit sections are connected together, and providing a gas or liquid cryogen seal while elastically compensating for relative motion between said outer and inner pipe portions due to temperature differences between said portions.
Claim 3
Dependent Claim
151 words
A conduit for carrying cryogen fluids comprising a plurality of similar conduit sections connected in end to end relationships; each of such sections comprising an inner pipe and a concentric outer pipe, with thermal insulation there between, one end of each of such sections being frustoconical and telescopable into and connectable to a female type end portion of a similar conduit section; the telescoped ends of said sections having a seal there between for inhibiting liquid cryogen penetration into spaces between said telescoped ends, and a motion compensator secured to that end of each conduit section into which the said frusto-conical end of a similar conduit section is telescoped, said motion compensator being exposed only to external pressure when said sections are connected together and providing a gas and liquid seal while elastically compensating for relative motion between said outer and inner pipe portions due to temperature differences between said portions.
Claim 4
Dependent Claim
151 words
A conduit for carrying cryogen fluids comprising a plurality of similar conduit sections connected in end to end relationships; each of such sections comprising an inner pipe and a concentric outer pipe, with thermal insulation there between, one end of each of such sections being frustoconical and telescopable into and connectable to a female type end portion of a similar conduit section; the telescoped ends of said sections having a seal there between for inhibiting liquid cryogen penetration into spaces between said telescoped ends, and a motion compensator secured to that end of each conduit section into which the said frusto-conical end of a similar conduit section is telescoped, said motion compensator being exposed only to external pressure when said sections are connected together and providing a gas and liquid seal while elastically compensating for relative motion between said outer and inner pipe portions due to temperature differences between said portions.
Claim 5
Dependent Claim
26 words
A Conduit section in accordance with claim 1 wherein said outer pipe is of carbon steel and said inner pipe is of a low temperature alloy.
Claim 6
Dependent Claim
27 words
The conduit section of claim 1 wherein the said inner pipe is of a material selected from the group consisting of stainless steel, nickel steel and aluminum.
Claim 7
Dependent Claim
17 words
A conduit in accordance with claim 2 wherein the outer pipe is coated with an antibuoyant material.
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) | 1978-05-26 | 1978-11-25 | 1979-05-27 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1982-05-26 | 1982-11-25 | 1983-05-27 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1986-05-26 | 1986-11-25 | 1987-05-27 | $7700.00 | Window Closed / Lapsed |