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US3901311A Expired / Lapsed US ⏱️ 0.0 years remaining

Self-filling hollow core arterial heat pipe

Assignee: Grumman Corp
•
Filing: 1973-01-12
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Granted: 1975-08-26
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Expires: 1993-01-12
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Abstract

Abstract An arterial heat pipe is disclosed which is self-filling and has a high capacity. It comprises a porous structure that is disposed around a hollow core.

Inventors

  • 👤 Robert Kosson
  • 👤 Burton Swerdling

Bibliographic Details

Application Number —
Jurisdiction US
Data Source google_patents
Last Synchronized 2026-11-03 13:21
CPC Classifications
F; F28; F28D; F28D15/00; F28D15/02; F28D15/04; F28D15/046

Claims Analysis

Total Claims: 19
Claim 1
Independent Claim 82 words
A heat pipe having a closed casing, a wall capillary and a vaporizable liquid carried thereby and including an axially disposed artery formed by a porous structure disposed around a hollow core, said porous structure having a controlled porosity which permits capillary filling of said porous structure and pressure priming of the hollow core, with said artery and said hollow core providing longitudinal flow of vaporizable liquid, said axially disposed artery being supported in said heat pipe by a plurality of legs.
Claim 2
Dependent Claim 82 words
A heat pipe having a closed casing, a wall capillary and a vaporizable liquid carried thereby and including an axially disposed artery formed by a porous structure disposed around a hollow core, said porous structure having a controlled porosity which permits capillary filling of said porous structure and pressure priming of the hollow core, with said artery and said hollow core providing longitudinal flow of vaporizable liquid, said axially disposed artery being supported in said heat pipe by a plurality of legs.
Claim 3
Dependent Claim 91 words
A heat pipe having a closed casing, a wall capillary and a vaporizable liquid carried thereby and including a supported axially disposed artery formed by a plurality of screen layers that are disposed around a hollow core and are separated by spacing means to provide a spacing of said screen layers which will permit capillary filling of said screen layers and pressure priming of the hollow core, with both providing longitudinal flow of vaporizable liquid, said supported axially disposed artery being supported in said heat pipe by a plurality of legs.
Claim 4
Dependent Claim 91 words
A heat pipe having a closed casing, a wall capillary and a vaporizable liquid carried thereby and including a supported axially disposed artery formed by a plurality of screen layers that are disposed around a hollow core and are separated by spacing means to provide a spacing of said screen layers which will permit capillary filling of said screen layers and pressure priming of the hollow core, with both providing longitudinal flow of vaporizable liquid, said supported axially disposed artery being supported in said heat pipe by a plurality of legs.
Claim 5
Dependent Claim 19 words
the heat pipe of claim 2 wherein the plurality of screen layers are formed by a spirally wound screen.
Claim 6
Dependent Claim 17 words
The heat pipe of claim 2 wherein the plurality of screen layers are concentrically disposed annular rings.
Claim 7
Dependent Claim 16 words
The heat pipe of claim 2 wherein the spacing means comprise a pLurality of elongated rods.
Claim 8
Dependent Claim 15 words
The heat pipe of claim 5 wherein the elongated rods have the same cross-sectional area.
Claim 9
Dependent Claim 24 words
The heat pipe of claim 2 wherein the axially diposed artery is supported in the heat pipe by a plurality of screen mesh legs.
Claim 10
Dependent Claim 25 words
The heat pipe of claim 2 wherein the wall capillary system has a configuration which matches the screening components of the supported axially disposed artery.
Claim 11
Dependent Claim 18 words
The heat pipe of claim 2 wherein the casing of said heat pipe has a substantially linear configuration.
Claim 12
Dependent Claim 15 words
The heat pipe of claim 9 wherein said heat pipe is substantially circular in cross-section.
Claim 13
Dependent Claim 19 words
The heat pipe of claim 9 wherein said heat pipe has a cross-section with at least one flat side.
Claim 14
Dependent Claim 17 words
The heat pipe of claim 2 wherein said screen layers are formed of woven metal wire mesh.
Claim 15
Dependent Claim 25 words
The heat pipe of claim 2 wherein the screen layers are formed of from about 50 to about 350 mesh stainless steel woven wire screening.
Claim 16
Dependent Claim 19 words
The heat pipe of claim 2 wherein the plurality of screen layers are formed of a knitted wire structure.
Claim 17
Dependent Claim 24 words
The heat pipe of claim 2 wherein the wall capillary is a spiral groove which is cut into the wall of the closed casing.
Claim 18
Dependent Claim 26 words
The heat pipe of claim 2 wherein the wall capillary is a series of unconnected, grooves which extend around the internal wall of the heat pipe.
Claim 19
Dependent Claim 24 words
The heat pipe of claim 7 wherein the axially disposed artery is supported by at least two legs that are constructed of screen mesh.

References Cited (Backward Citations)

US2615699A Cited
US2517654A Cited
US2921776A Cited
US2876800A Cited
US3283787A Cited
US3734173A Cited
US3620298A Cited
US3720988A Cited

USPTO Annuity & Maintenance Windows

Annuity Stage Window Opens Payment Deadline Surcharge Period Until Estimated Fee Status
3.5 Years (Year 4) 1978-08-25 1979-02-24 1979-08-26 $2000.00 Window Closed / Lapsed
7.5 Years (Year 8) 1982-08-25 1983-02-24 1983-08-26 $3760.00 Window Closed / Lapsed
11.5 Years (Year 12) 1986-08-25 1987-02-24 1987-08-26 $7700.00 Window Closed / Lapsed

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