US4958635A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Therapeutic temperature pack
Assignee: Bio Support Industries Ltd
•
Filing: 1989-03-21
•
Granted: 1990-09-25
•
Expires: 2009-03-21
Abstract
Abstract A temperature pack for therapeutic use comprises a sealed envelope of flexible sheet plastic material and a thickened aqueous composition contained within the envelope. At least one major surface of the envelope is embossed with a plurality of small blisters, which substantially increases the ability of the bag to conform to body contours. The sheet plastic material is preferably metallized to reduce undesired heat transfer.
Inventors
- 👤 Frank L. Roberts
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-04 01:10
CPC Classifications
A; A61; A61F; A61F7/00; A61F7/02; A61F2007/0244; A61F2007/0249; A61F2007/0255
Claims Analysis
Total Claims: 13
Claim 1
Independent Claim
100 words
In a temperature pack for therapeutic use comprising a sealed envelope-like bag of flexible sheet plastic material, said bag having an interior, and a thickened aqueous liquid composition contained within said interior of said bag, the improvement wherein said plastic sheet material is embossed to form a large plurality of small blisters on at least medial portions of at least one major surface of said bag, said blisters (i) being open to the interior of said bag (ii) cumulatively having a volume of not greater than about 3% of the total volume of said liquid composition contained within said bag.
Claim 2
Dependent Claim
100 words
In a temperature pack for therapeutic use comprising a sealed envelope-like bag of flexible sheet plastic material, said bag having an interior, and a thickened aqueous liquid composition contained within said interior of said bag, the improvement wherein said plastic sheet material is embossed to form a large plurality of small blisters on at least medial portions of at least one major surface of said bag, said blisters (i) being open to the interior of said bag (ii) cumulatively having a volume of not greater than about 3% of the total volume of said liquid composition contained within said bag.
Claim 3
Dependent Claim
30 words
A temperature pack as defined in claim 1, wherein said blisters occupy from about one half to two thirds of the portion of the embossed surface area of said bag.
Claim 4
Dependent Claim
26 words
A temperature pack as defined in claim 1, wherein said sheet material is embossed to form said blisters over one major surface only of said bag.
Claim 5
Dependent Claim
24 words
A temperature pack as defined in claim 1, wherein said blisters have a wall thickness less than the thickness of said sheet plastic material.
Claim 6
Dependent Claim
27 words
A temperature pack as defined in claim 1, wherein said blisters are arranged symmetrically in columns and rows, and adjacent blisters in any column are in alignment.
Claim 7
Dependent Claim
16 words
A temperature pack as defined in claim 5, wherein alternate rows of blisters are in alignment.
Claim 8
Dependent Claim
34 words
A temperature pack as defined in claim 1, wherein said bag has a length greater than the width thereof, and wherein said blisters have a plan form elongated along the length of the bag.
Claim 9
Dependent Claim
18 words
A temperature pack as defined in claim 5, wherein said blisters are in the form of spherical caps.
Claim 10
Dependent Claim
18 words
A temperature pack as defined in claim 1, wherein said plastic material is coated with a metallic film.
Claim 11
Dependent Claim
17 words
A temperature as defined in claim 9, wherein said metallic film is sandwiched in said plastic material.
Claim 12
Dependent Claim
27 words
A temperature pack as defined in claim 7, wherein said aqueous composition comprises water and propylene glycol in a weight ratio of not less than about 7:3.
Claim 13
Dependent Claim
18 words
A temperature pack as defined in claim 7, wherein said aqueous composition includes a thickner and stabilizer therefor.
References Cited (Backward Citations)
US2043327A
Cited
US2602302A
Cited
US3092112A
Cited
US4404820A
Cited
US4575097A
Cited
US4596250A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1993-09-24 | 1994-03-26 | 1994-09-25 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1997-09-24 | 1998-03-26 | 1998-09-25 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 2001-09-24 | 2002-03-26 | 2002-09-25 | $7700.00 | Window Closed / Lapsed |