US3628537A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Self-retaining cold wrap
Assignee: Individual
•
Filing: 1970-04-06
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Granted: 1971-12-21
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Expires: 1990-04-06
Abstract
Abstract A self-retaining cold wrap for application to an animal or human to relieve a traumatized area, reduce inflammatory edema and pain, among other uses. The cold wrap embodies an outer envelope, an inner container for a volatile refrigerant communicating with the interior of the outer envelope to provide reduced temperature and also pressure within the outer envelope, a gastight closure for the outer envelope, and means for attaching the wrap to the body of an animal.
Inventors
- 👤 Wilbur C Berndt
- 👤 Harry J Hardenbrook
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-23 15:27
CPC Classifications
A; A61; A61F; A61F7/00; A61F7/10; A61D; A61D9/00; A61F7/103; A61F2007/0001; A61F2007/0054; A61F2007/0056; A61F2007/0058
Claims Analysis
Total Claims: 10
Claim 1
Independent Claim
68 words
In a self-retaining cold wrap, an envelope open at the top only, complemental closure means on opposed side edges of said envelope, gastight closure means to close the open top thereof, a pouch carried by said envelope inside thereof to contain a volatile refrigerant, and said pouch having at least one opening in communication with the inside of said envelope to permit vaporized refrigerant to enter the envelope.
Claim 2
Dependent Claim
68 words
In a self-retaining cold wrap, an envelope open at the top only, complemental closure means on opposed side edges of said envelope, gastight closure means to close the open top thereof, a pouch carried by said envelope inside thereof to contain a volatile refrigerant, and said pouch having at least one opening in communication with the inside of said envelope to permit vaporized refrigerant to enter the envelope.
Claim 3
Dependent Claim
30 words
The cold wrap of claim 1, wherein said envelope includes outer and inner thermoplastic panels joined by a marginal heat seal seam extending around all sides thereof except the top.
Claim 4
Dependent Claim
27 words
The cold wrap of claim 1, including an adjustable valve in the outer part of said envelope to limit the pressure of vaporized refrigerant within said envelope.
Claim 5
Dependent Claim
29 words
The cold wrap of claim 1, including spacer means between the adjacent wall of said pouch and the inner wall of said envelope to prevent full face contact therebetween.
Claim 6
Dependent Claim
18 words
The cold wrap of claim 1, including a closure for the top of said pouch inside said envelope.
Claim 7
Dependent Claim
37 words
The cold wrap of claim 1, wherein said gastight closure means comprise flexible plastic strips secured one each to the upper margins of the inner and outer parts of said envelope, and carrying complemental interlocking portions thereon.
Claim 8
Dependent Claim
36 words
The cold wrap of claim 2, wherein said complemental closure means include thermoplastic strips carrying zipper components locked in said heat seal seam at the sides of said panels to secure the wrap around an affliction.
Claim 9
Dependent Claim
38 words
The cold wrap of claim 2, wherein said pouch comprises a thermoplastic sheet of less size than said envelope and is heat sealed except at the top to the inside face of said inner panel of the envelope.
Claim 10
Dependent Claim
17 words
The cold wrap of claim 4, wherein said spacer means are integral with one of said walls.
References Cited (Backward Citations)
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1974-12-20 | 1975-06-21 | 1975-12-21 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1978-12-20 | 1979-06-21 | 1979-12-21 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1982-12-20 | 1983-06-21 | 1983-12-21 | $7700.00 | Window Closed / Lapsed |