US4865012A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Reusable cold pack for medical usage
Assignee: Polar Products Inc
•
Filing: 1984-09-04
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Granted: 1989-09-12
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Expires: 2004-09-04
Abstract
Abstract A thermo pack for heating or chilling body portions comprising a mixture of water, salt, cellulose and flour sealed in a pliable bag.
Inventors
- 👤 Jerry S. Kelley
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-23 16:05
CPC Classifications
A; A61; A61F; A61F7/00; A61F7/02
Claims Analysis
Total Claims: 9
Claim 1
Independent Claim
46 words
A thermo pack used for variant temperature treatment, comprising: a sealed flexible bag containing a mixture having a mush-like to past consistency and comprising water, a salt dissolved therein, cellulose and flour, said cellulose and flour being present in amounts sufficient to impart the desired consistency.
Claim 2
Dependent Claim
46 words
A thermo pack used for variant temperature treatment, comprising: a sealed flexible bag containing a mixture having a mush-like to past consistency and comprising water, a salt dissolved therein, cellulose and flour, said cellulose and flour being present in amounts sufficient to impart the desired consistency.
Claim 3
Dependent Claim
51 words
A thermo pack as recited in claim 1, wherein the paste is made by the process of saturating the water with salt to an approximate specific gravity of 1.125, then mixing the resultant saline solution, paper and flour in the following proportions by weight: saline--84.5 percent, paper--8.3 percent, and flour--7.2 percent.
Claim 4
Dependent Claim
33 words
A thermo pack as recited in claim 1, wherein the paste is sealed in a first bag by heat sealing and said first bag is sealed into a second bag by heat sealing.
Claim 5
Dependent Claim
24 words
A thermo pack as recited in claim 3, wherein the bags are made of low density polyethylene film using vinyl acetate as a plasticizer.
Claim 6
Dependent Claim
37 words
A thermo pack as recited in claim 4, wherein the first bag has a greater film thickness than the second bag and the bag sizes are the same, the second bag stretching slightly to cover the first.
Claim 7
Dependent Claim
14 words
A thermo pack according to claim 1 in which said cellulose is shredded paper.
Claim 8
Dependent Claim
14 words
A thermo pack according to claim 1 in which said salt is common salt.
Claim 9
Dependent Claim
19 words
A thermo pack according to claim 7 in which said water and common salt form an essentially saturated solution.
References Cited (Backward Citations)
US1716551A
Cited
US3736769A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1992-09-11 | 1993-03-13 | 1993-09-12 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1996-09-11 | 1997-03-13 | 1997-09-12 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 2000-09-11 | 2001-03-13 | 2001-09-12 | $7700.00 | Window Closed / Lapsed |