US4953550A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Chemical thermal pack having an outer pouch provided with capillaries
Assignee: 3M Co
•
Filing: 1988-11-09
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Granted: 1990-09-04
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Expires: 2008-11-09
Abstract
Abstract This invention relates to hot or cold thermal packs having an outer pouch provided with capillaries to allow drainage of the pack and optionally to provide a temperature moderating effect.
Inventors
- 👤 Wayne K. Dunshee
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-02 11:23
CPC Classifications
A; A61; A61F; A61F7/00; A61F7/02; A61F7/03; F; F25; F25D; F25D3/00; F25D3/02; F25D3/06; F25D3/08; F25D2303/00; F25D2303/08; F25D2303/082; F25D2331/00; F25D2331/80; F25D2331/801; F25D2331/8015
Claims Analysis
Total Claims: 26
Claim 1
Independent Claim
65 words
A chemical thermal pack consisting of a flexible liquid tight inner bag containing a temperature-retaining composition and a non-water absorbant insulation sheet, said inner bag being disposed within an outer pouch constructed at least partially from a sheet of liquid impermeable material provided with capillaries each having a base in the plane of the sheet and an apex remote from said plane of said sheet.
Claim 2
Dependent Claim
65 words
A chemical thermal pack consisting of a flexible liquid tight inner bag containing a temperature-retaining composition and a non-water absorbant insulation sheet, said inner bag being disposed within an outer pouch constructed at least partially from a sheet of liquid impermeable material provided with capillaries each having a base in the plane of the sheet and an apex remote from said plane of said sheet.
Claim 3
Dependent Claim
12 words
The chemical thermal pack of claim 1 wherein said capillaries are tapered.
Claim 4
Dependent Claim
20 words
The chemical thermal pack of claim 2 wherein said capillaries are in the shape of frustum of a conical surface.
Claim 5
Dependent Claim
34 words
The chemical thermal pack of claim 3 wherein the apex has a diameter of from about 0.10 to about 2.54 mm. and the base has a diameter of about 0.15 to about 6.35 mm.
Claim 6
Dependent Claim
36 words
The chemical thermal pack of claim 4 wherein the apex has a diameter of from about 0.13 mm. to about 0.51 mm. and the base has a diameter of about 0.2 mm. to about 2.00 mm.
Claim 7
Dependent Claim
27 words
The chemical thermal pack of claim 4 wherein the apex has a diameter of about 0.35 mm. and the base has a diameter of about 0.5 mm.
Claim 8
Dependent Claim
23 words
The chemical thermal pack of claim 7 wherein said capillary has a base to apex distance of about 0.04 to about 2.0 mm.
Claim 9
Dependent Claim
23 words
The chemical thermal pack of claim 7 wherein said capillary has a base to apex distance of about 0.5 to about 1 mm.
Claim 10
Dependent Claim
18 words
The chemical thermal pack of claim 2 wherein said capillaries are in the shape of pyramidal tapered capillaries.
Claim 11
Dependent Claim
14 words
The chemical thermal pack of claim 9 wherein said pyramidal capillaries have triangular bases.
Claim 12
Dependent Claim
14 words
The chemical thermal pack of claim 9 wherein said pyramidal capillaries have square bases.
Claim 13
Dependent Claim
26 words
The chemical thermal pack of claim 1 wherein said capillaries are in an ordered arrangement with from about 5 to about 231 capillaries per square centimeter.
Claim 14
Dependent Claim
26 words
The chemical thermal pack of claim 1 wherein said capillaries are in an ordered arrangement with from about 50 to about 100 capillaries per square centimeter.
Claim 15
Dependent Claim
16 words
The chemical thermal pack of claim 1 wherein said outer pouch is sealed on all sides.
Claim 16
Dependent Claim
15 words
The chemical thermal pack of claim 1 that is mode from material that are microwaveable.
Claim 17
Dependent Claim
15 words
The chemical thermal pack of claim 1 that is made from material that are boilable.
Claim 18
Dependent Claim
15 words
The chemical thermal pack of claim 1 wherein said outer pouch is made from polyethylene.
Claim 19
Dependent Claim
20 words
The chemical thermal pack of claim 1 wherein said inner bag is made from a linear low density polyethylene/polyester laminate.
Claim 20
Dependent Claim
59 words
A chemical thermal pack consisting of a flexible liquid tight inner bag containing a temperature-retaining composition, said inner bag being disposed within an outer pouch constructed at least partially from a sheet of liquid impermeable material provided with capillaries each having a base in the plane of the sheet and an apex remote from said plane of said sheet.
Claim 21
Dependent Claim
59 words
A chemical thermal pack consisting of a flexible liquid tight inner bag containing a temperature-retaining composition, said inner bag being disposed within an outer pouch constructed at least partially from a sheet of liquid impermeable material provided with capillaries each having a base in the plane of the sheet and an apex remote from said plane of said sheet.
Claim 22
Dependent Claim
27 words
The chemical thermal pack of claim 14 wherein at least one-half of said outer pouch is constructed from a sheet of liquid impermeable material provided with capillaries.
Claim 23
Dependent Claim
38 words
The chemical thermal pack of claim 14 wherein said outer pouch is constructed from an upper sheet of liquid impermeable material provided with capillaries and a lower sheet of liquid impermeable material that is not provided with capillaries.
Claim 24
Dependent Claim
71 words
A chemical thermal pack having a flexible liquid tight inner bag containing a temperature-retaining composition, said inner bag being disposed within an outer pouch constructed at least partially from a sheet of liquid impermeable material provided with capillaries each having a base in the plane of the sheet and an apex remote from said plane of said sheet, provided that no insulation material appears between said capillaries and said inner bag.
Claim 25
Dependent Claim
71 words
A chemical thermal pack having a flexible liquid tight inner bag containing a temperature-retaining composition, said inner bag being disposed within an outer pouch constructed at least partially from a sheet of liquid impermeable material provided with capillaries each having a base in the plane of the sheet and an apex remote from said plane of said sheet, provided that no insulation material appears between said capillaries and said inner bag.
Claim 26
Dependent Claim
30 words
The chemical thermal pack of claim 21 which additionally contains an insulation sheet that is adjacent to and substantially covers the portion of the bag constructed from said lower sheet.
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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) | 1993-09-03 | 1994-03-05 | 1994-09-04 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1997-09-03 | 1998-03-05 | 1998-09-04 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 2001-09-03 | 2002-03-05 | 2002-09-04 | $7700.00 | Window Closed / Lapsed |