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US3744053A Expired / Lapsed US ⏱️ 0.0 years remaining

Liquid loop garments

Assignee: Sanders Nuclear Corp
•
Filing: 1970-02-11
•
Granted: 1973-07-10
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Expires: 1990-02-11
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Abstract

Abstract Liquid loop garments provide thermal protection to the body of a user in hostile temperature environments. First and second superimposed liquid impervious, yieldable sheets are secured together at selected portions to form liquid barriers at preselected positions between the first and second sheets. The barriers and sheets define adjacent liquid channels which act to direct flow of a heat transfer medium passed into the garment. Inlet and outlet manifolds are each connected with a plurality of the channels so that heat transfer liquid can be passed into an inlet valve and distributed over the body of an individual with efficient control of temperature variations in the garment. The garment is particularly useful as an underwater diver''s heating suit to protect divers from extreme cold environments normally encountered at depths.

Inventors

  • 👤 E Parker
  • 👤 K Mayo
  • 👤 D Harvey

Bibliographic Details

Application Number —
Jurisdiction US
Data Source google_patents
Last Synchronized 2026-10-28 14:22
CPC Classifications
A; A41; A41D; A41D13/00; A41D13/002; B; B63; B63C; B63C11/00; B63C11/02; B63C11/04; B63C11/28

Claims Analysis

Total Claims: 10
Claim 1
Independent Claim 212 words
A liquid loop garment for thermal protection in hostile temperature environments, said garment constructed and arranged to conform substantially to the contours of a body portion over which it is to be used, said garment having integral arm sections, leg sections and a torso section and comprising, a first liquid impervious yieldable sheet, a second liquid impervious yieldable sheet overlying said first sheet, said first and second sheets being of a material such that said sheets can be sealed to each other, selected portions of said sheets having spaced sealed lines of securement to form liquid barriers along said sealed lines at preselected positions between said first and second sheets, said barriers and sheets defining adjacent liquid channels which act to direct flow of a heat transfer liquid passed into said garment, selected ones of said sealed lines being discontinuous to form short circuit heat transfer liquid flow paths on flexure of said garment at the elbow and knee areas thereof, an inlet manifold interconnected with a first plurality of said channels and an outlet manifold interconnected with a second plurality of said channels whereby heat transfer liquid can be passed to said inlet manifold and distributed over the body of an individual with efficient control of temperature variations in said garment.
Claim 2
Dependent Claim 212 words
A liquid loop garment for thermal protection in hostile temperature environments, said garment constructed and arranged to conform substantially to the contours of a body portion over which it is to be used, said garment having integral arm sections, leg sections and a torso section and comprising, a first liquid impervious yieldable sheet, a second liquid impervious yieldable sheet overlying said first sheet, said first and second sheets being of a material such that said sheets can be sealed to each other, selected portions of said sheets having spaced sealed lines of securement to form liquid barriers along said sealed lines at preselected positions between said first and second sheets, said barriers and sheets defining adjacent liquid channels which act to direct flow of a heat transfer liquid passed into said garment, selected ones of said sealed lines being discontinuous to form short circuit heat transfer liquid flow paths on flexure of said garment at the elbow and knee areas thereof, an inlet manifold interconnected with a first plurality of said channels and an outlet manifold interconnected with a second plurality of said channels whereby heat transfer liquid can be passed to said inlet manifold and distributed over the body of an individual with efficient control of temperature variations in said garment.
Claim 3
Dependent Claim 22 words
A liquid loop garment in accordance with claim 1 wherein said garment defines integral arm sections, leg sections and a torso section.
Claim 4
Dependent Claim 26 words
A liquid loop garment in accordance with claim 2 and further comprising hand sections, a head section and flexible tubing interconnecting said sections with said manifolds.
Claim 5
Dependent Claim 47 words
A liquid loop garment in accordance with claim 1 wherein said overlying sheets are separated at areas corresponding to flexure areas of a body and a stretch material spans said areas joined to edges of said sheets to permit free articulation of said garment by an individual.
Claim 6
Dependent Claim 37 words
A liquid loop garment in accordance with claim 1 and further comprising a third liquid impervious sheet comprising a portion of said inlet and outlet manifolds, said manifolds defining interconnecting passageways to selected ones of said channels.
Claim 7
Dependent Claim 86 words
A liquid loop garment in accordance with claim 1 wherein said inlet and outlet manifolds are formed in part by a third liquid impervious sheet and said manifolds extend adjacent each other and transversely about the torso section of said garment, said first and second overlying sheets being separated at areas corresponding to certain flexure areas of the body with a stretch material spanning said areas and joined to edges of said first and second sheets to permit free articulation of said garment by an individual.
Claim 8
Dependent Claim 22 words
A liquid loop garment in accordance with claim 1, and further comprising a thermal insulating material attached to one of said sheets.
Claim 9
Dependent Claim 38 words
A liquid loop garment in accordance with claim 6 wherein said garment defines integral arm sections, leg sections and a torso section, separate hand sections, a head section and flexible tubing interconnecting with said inlet and outlet manifolds.
Claim 10
Dependent Claim 33 words
A liquid loop garment in accordance with claim 1 wherein the cross sectional area of selected ones of said channels differs from the cross sectional area of selected other ones of said channels.

References Cited (Backward Citations)

US1726939A Cited
GB577101A Cited
US2930594A Cited
FR1188740A Cited
FR1420473A Cited
GB1115414A Cited
US3521628A Cited
US3391405A Cited
US3452812A Cited
US3523301A Cited

USPTO Annuity & Maintenance Windows

Annuity Stage Window Opens Payment Deadline Surcharge Period Until Estimated Fee Status
3.5 Years (Year 4) 1976-07-09 1977-01-08 1977-07-10 $2000.00 Window Closed / Lapsed
7.5 Years (Year 8) 1980-07-09 1981-01-08 1981-07-10 $3760.00 Window Closed / Lapsed
11.5 Years (Year 12) 1984-07-09 1985-01-08 1985-07-10 $7700.00 Window Closed / Lapsed

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