US Patent No: 5,792,213
Number of patents in Portfolio can not be more than 2000
Hot or cold chemical therapy pack
Stats
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Aug 11, 1998
Issued date -
Nov 15, 1995
filing date -
08/559,469
serial no -
Expired
status
Importance
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Abstract
A hot or cold chemical therapy pack (1) is provided that has two compartments (28, 30). One compartment (28) has a natural weak point (32) or seam (at 24 or 26) and is contained inside the other compartment (30). Each compartment contains a chemical reactant. In one embodiment, the outer compartment (30), which is made of a flexible, vinyl or plastic material, is arranged in a semi-collapsed configuration. Each end of the inner compartment (28) is fixedly attached to a respective end (24, 26) of the outer compartment (30). The pack (10) is chemically activated by pressing on, kneading, or twisting the outer compartment (30), or pulling on each end of the pack (10). The lateral, outward pressure caused by the pressing on, kneading, or twisting of the pack, or by the user's pulling on the ends of the pack, is exerted at the rupturable seam (32) of the inner compartment (28). At a predetermined pressure, the natural weak point (32) or seam is ruptured and the reactant contents of the two compartments merge (34), which creates the heating (exothermic) or cooling (endothermic) chemical reaction. Consequently, the hot or cold chemical therapy pack (10) is more easily activated than existing chemical therapy packs, which makes this pack (10) more convenient to use.
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First Claim
Related Publications
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International Classification(s)
- [Classification Symbol]
- [Patents Count]
Cited Art
| Patent Info | (Count) | # Cites | Year |
|---|---|---|---|
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| 4,347,848 Small ice pack | 33 | 1980 | |
| 4,385,950 Small ice packs and method of manufacturing the same | 18 | 1982 | |
| 4,523,353 Small ice packs and method of manufacturing the same | 27 | 1982 | |
| 4,688,572 Medical/sports thermal pack | 75 | 1986 | |
| 4,951,666 Thermal pack | 30 | 1988 | |
| 5,045,041 Method of manufacturing a reusable fabric-covered heat-exchange bag | 9 | 1989 | |
| 5,074,300 Reusable fabric-covered heat-exchange bag | 27 | 1989 | |
| 5,466,251 Therapeutic sleeve | 30 | 1994 | |
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| 4,462,224 Instant hot or cold, reusable cold pack | 100 | 1983 | |
| 4,953,550 Chemical thermal pack having an outer pouch provided with capillaries | 30 | 1988 | |
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| 4,527,566 Body wrap | 86 | 1983 | |
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| 5,178,139 Absorbent pad and thermal pack | 48 | 1990 | |
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| 4,931,333 Thermal packaging assembly | 48 | 1988 | |
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| 4,805,620 Adjustable wrappable, stretchable wrap sheet | 83 | 1987 | |
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| 4,585,003 Ice-pack retention device | 35 | 1984 | |
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| 4,636,391 Apparatus and method of forming a sterile product package | 13 | 1985 | |
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| 5,184,470 Endothermic cooler for electronic components | 10 | 1991 | |
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| 5,261,241 Refrigerant | 18 | 1992 | |
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| 4,986,076 Isothermal cooling method and device | 20 | 1989 | |
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| 4,628,932 Knee ice pack | 63 | 1984 | |
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| 4,668,564 Hydrogel materials for hot and cold therapy and method for forming same | 36 | 1986 | |
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| 5,275,156 Reusable heat releasing pack | 24 | 1992 | |
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| 4,537,184 Portable orthopaedic splint system | 22 | 1983 | |
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| 5,356,426 Refillable ice pack | 24 | 1993 | |
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| 4,397,315 Dressing with temperature pack | 37 | 1981 | |
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| 4,751,119 Container for self-heating or self-cooling of drinks or foodstuffs by an exothermic or endothermic reaction | 21 | 1986 | |
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| 4,854,760 Disposable container with applicator | 29 | 1987 | |
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| 4,204,543 Coolant band | 79 | 1978 | |
| 4,326,533 Coolant band | 44 | 1979 | |
| 4,372,318 Thermal treatment device | 27 | 1980 | |
| 4,402,402 Barrier seal multiple-compartment package | 56 | 1981 | |
| 4,427,010 Method and means for cooling injured parts or areas of a human or animal body | 25 | 1981 | |
| 4,586,506 Elastic wrap connecting with heat or cold pack | 67 | 1984 | |
| 4,780,117 Time release cooling system | 43 | 1987 | |
| 4,856,651 Chemical thermal pack and method of making same | 50 | 1987 | |
| 5,163,504 Container heating or cooling device and building material | 16 | 1988 | |
| 5,020,711 Pouch for reusable hot/cold packs for medical usage | 55 | 1989 | |
| 4,972,832 Thermal pack holder | 49 | 1989 | |
| 5,205,278 Chemical bag warmer | 25 | 1992 | |