Patent US4738119A successfully refreshed from Google Patents.
US4738119A
Expired / Lapsed
US
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Integral cooling garment for protection against heat stress
Assignee: Westinghouse Electric Corp
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Filing: 1987-02-09
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Granted: 1988-04-19
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Expires: 2007-02-09
Abstract
Abstract An integral cooling garment for protection against heat stress characterized by a pair of separate linings stitched together to form tube-receiving chambers which microporous tubes are detachably connectable to a source of liquid carbon dioxide which converts to a solid phase and then gradually sublimates to carbon dioxide gas that is released into the chambers for cooling a wearer of the article of clothing, and the article being untethered to the source of liquid carbon dioxide when worn.
Inventors
- 👤 Paolo R. Zafred
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-03 03:24
CPC Classifications
A; A41; A41D; A41D13/00; A41D13/002; A41D13/005; A41D13/0053; F; F25; F25D; F25D3/00; F25D3/12; F25D3/14; F25D2400/00; F25D2400/26
Claims Analysis
Total Claims: 7
Claim 1
Independent Claim
143 words
An integral cooling garment for the protection of a person's body from ambient heat, comprising: an outer lining, a permeable inner lining, and a plurality of gas-conductivity tubes therebetween; each lining including a first layer of insulating material; a container for containing fluidized carbon dioxide and comprising a pressure reducing valve; said tubes having a nozzle detachably connected to the valve for delivering liquified carbon dioxide to the tubes where the liquified carbon dioxide converts to solid carbon dioxide and where it then sublimates to carbon dioxide gas; the tubes also being microporous of a predetermined pore size for releasing carbon dioxide gas into the areas between the inner and outer linings and through the inner lining into contact with a person's body, whereby the article of clothing is useful without continuous connection to the container during sublimation of the solid carbon dioxide.
Claim 2
Dependent Claim
143 words
An integral cooling garment for the protection of a person's body from ambient heat, comprising: an outer lining, a permeable inner lining, and a plurality of gas-conductivity tubes therebetween; each lining including a first layer of insulating material; a container for containing fluidized carbon dioxide and comprising a pressure reducing valve; said tubes having a nozzle detachably connected to the valve for delivering liquified carbon dioxide to the tubes where the liquified carbon dioxide converts to solid carbon dioxide and where it then sublimates to carbon dioxide gas; the tubes also being microporous of a predetermined pore size for releasing carbon dioxide gas into the areas between the inner and outer linings and through the inner lining into contact with a person's body, whereby the article of clothing is useful without continuous connection to the container during sublimation of the solid carbon dioxide.
Claim 3
Dependent Claim
22 words
The device of claim 1 in which the inner and outer linings form an intermediate compartment in which the tubes are disposed.
Claim 4
Dependent Claim
22 words
The device of claim 2 in which the inner and outer linings are stitched together at spaced intervals to form tube-containing chambers.
Claim 5
Dependent Claim
24 words
The device of claim 3 in which the outer lining indicates a second layer of material to reflect ambient radiant heat from the garment.
Claim 6
Dependent Claim
22 words
The device of claim 4 in which the inner lining includes a second layer of reinforcement fabric for the first insulating layer.
Claim 7
Dependent Claim
18 words
The device of claim 1 in which one end of each tube is connected to a common manifold.
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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) | 1991-04-19 | 1991-10-19 | 1992-04-19 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1995-04-19 | 1995-10-19 | 1996-04-19 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1999-04-19 | 1999-10-19 | 2000-04-19 | $7700.00 | Window Closed / Lapsed |