US5113666A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Cooling device for hazardous materials suits
Assignee: Mainstream Engineering Corp
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Filing: 1990-10-05
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Granted: 1992-05-19
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Expires: 2010-10-05
Abstract
Abstract A relatively lightweight cooling device utilizing adsorption of perspirated water vapor to permit evaporative cooling of a person wearing a sealed suit for defined time periods. The device can be constructed in the form of a rectangular pad or the like having an open cell foam adjacent the person's skin to permit static transport of perspirated water vapor to an adsorbent layer. The open cell foam or a separate material acts as a thermal insulator to prevent heat flow back toward the skin resulting from the exothermic heat of adsorption produced by the adsorbent layer. In lieu of static movement of the water vapor, a small fan can be operatively associated with the fan for actively moving the water vapor to a single point to enhance the evaporative cooling, particularly where a smaller amount of adsorbent material is used. The vest itself can be the evaporator and filled with working fluid which is vaporized as the evaporator section of the vest absorbs heat from the body. The vapor is transported to a bed which can contain a desiccant, molecular sieve, adsorbent or absorbent material.
Inventors
- 👤 Clyde F. Parrish
- 👤 Robert P. Scaringe
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-04 01:32
CPC Classifications
A; A41; A41D; A41D13/00; A41D13/002; A41D13/005; A41D13/0053; A41D13/0056; F; F25; F25B; F25B17/00; F25B17/08
Claims Analysis
Total Claims: 25
Claim 1
Independent Claim
60 words
A cooling device, comprising: means for inclusion of the device in a person's wearing apparel and for permitting transfer of water vapor from a first surface constituted by a person's skin; means for adsorbing the water vapor and transferring heat of adsorption toward a second surface; and means for resisting flow of the heat of adsorption toward the final surface.
Claim 2
Dependent Claim
60 words
A cooling device, comprising: means for inclusion of the device in a person's wearing apparel and for permitting transfer of water vapor from a first surface constituted by a person's skin; means for adsorbing the water vapor and transferring heat of adsorption toward a second surface; and means for resisting flow of the heat of adsorption toward the final surface.
Claim 3
Dependent Claim
17 words
The cooling device according to claim 1, wherein the transfer permitting means is an open cell material.
Claim 4
Dependent Claim
15 words
The cooling device according to claim 1, wherein the adsorbing means is a desiccant layer.
Claim 5
Dependent Claim
24 words
The cooling device according to claim 1, wherein the resisting means and the transfer permitting means are incorporated in a single layer of material.
Claim 6
Dependent Claim
15 words
The cooling device according to claim 4, wherein the material is an open cell foam.
Claim 7
Dependent Claim
15 words
The cooling device according to claim 5, wherein the adsorbing means is a desiccant layer.
Claim 8
Dependent Claim
15 words
The cooling device according to claim 1, wherein the adsorbing means is a desiccant material.
Claim 9
Dependent Claim
18 words
The cooling device according to claim 7, wherein the desiccant material is one of a powder and pellets.
Claim 10
Dependent Claim
25 words
The cooling device according to claim 1, wherein the resisting means is a thermal insulation layer between the transfer permitting means and the adsorbing means.
Claim 11
Dependent Claim
17 words
The cooling device according to claim 9, wherein the transfer permitting means is an open cell material.
Claim 12
Dependent Claim
16 words
The cooling device according to claim 10, wherein the adsorbing means is a molecular sieve layer.
Claim 13
Dependent Claim
15 words
The cooling device according to claim 10, wherein the adsorbing means is a desiccant material.
Claim 14
Dependent Claim
18 words
The cooling device according to claim 12, wherein the desiccant material is one of a powder and pellets.
Claim 15
Dependent Claim
22 words
The cooling device according to claim 1, wherein the adsorbing means includes a surface with an adhesive opposed to the second surface.
Claim 16
Dependent Claim
22 words
The cooling device according to claim 14, wherein the transfer permitting means includes a peelable film layer opposed to the first surface.
Claim 17
Dependent Claim
19 words
The cooling device according to claim 15, wherein the three-mentioned means are associated in at least two separate pouches.
Claim 18
Dependent Claim
17 words
The cooling device according to claim 17, wherein the transfer permitting means is an open cell material.
Claim 19
Dependent Claim
15 words
The cooling device according to claim 17, wherein the adsorbing means is a desiccant material.
Claim 20
Dependent Claim
30 words
The cooling device according to claim 18, wherein the first surface is a person's skin and the second surface is a material forming a sealed garment worn by a person.
Claim 21
Dependent Claim
20 words
The cooling device according to claim 1, further including means for actively moving the water vapor toward the adsorbing means.
Claim 22
Dependent Claim
54 words
A cooling device, comprising means for permitting transfer of water vapor from a first surface; means for adsorbing the water vapor and transferring heat of adsorption toward a second surface; and means for resisting flow of the heat of adsorption toward the first surface, wherein the transfer permitting means is an open cell material.
Claim 23
Dependent Claim
54 words
A cooling device, comprising means for permitting transfer of water vapor from a first surface; means for adsorbing the water vapor and transferring heat of adsorption toward a second surface; and means for resisting flow of the heat of adsorption toward the first surface, wherein the transfer permitting means is an open cell material.
Claim 24
Dependent Claim
59 words
A cooling device, comprising means for permitting transfer of water vapor from a first surface; means for adsorbing the water vapor and transferring heat of adsorption toward a second surface; and means for resisting flow of the heat of adsorption toward the first surface, wherein the transfer permitting means includes a peelable film layer opposed to the first surface.
Claim 25
Dependent Claim
59 words
A cooling device, comprising means for permitting transfer of water vapor from a first surface; means for adsorbing the water vapor and transferring heat of adsorption toward a second surface; and means for resisting flow of the heat of adsorption toward the first surface, wherein the transfer permitting means includes a peelable film layer opposed to the first surface.
References Cited (Backward Citations)
US3802215A
Cited
US4138850A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1995-05-19 | 1995-11-18 | 1996-05-19 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1999-05-19 | 1999-11-18 | 2000-05-19 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 2003-05-19 | 2003-11-18 | 2004-05-19 | $7700.00 | Window Closed / Lapsed |