US4004711A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Disposable towel
Assignee: Gorham International Inc
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Filing: 1975-06-16
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Granted: 1977-01-25
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Expires: 1995-06-16
Abstract
Abstract This invention relates to a disposable wet towel characterized by an ability to evolve heat immediately prior to use or in use such that the temperature of the towel is increased by as much as 25° or more above ambient when applied to the skin. The evolution of heat is due to the admixture of a reducing agent and an oxidizing agent reactive with said reducing agent which agents are kept separated prior to use of the towel and mixed when the towel is put into use. The agents and products resulting from the reaction thereof are not irritating to the skin. The invention also provides pouches for storing said towels prior to use which pouches contain means for maintaining said oxidizing agent and reducing agent isolated from each other.
Inventors
- 👤 Leonard E. Ravich
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-05 17:43
CPC Classifications
B; B65; B65D; B65D81/00; B65D81/32; B65D81/3261; F; F24; F24V; F24V30/00; A; A47; A47K; A47K10/00; A47K10/24; A47K10/32; A47K2010/3266; A47K2010/3293
Claims Analysis
Total Claims: 5
Claim 1
Independent Claim
151 words
In combination, a stack of pouches, one on top of another, in a container of size and shape to accommodate said stack of pouches, each of said pouches containing a towel, a solution of an oxidizing agent and a solution of a reducing agent, said solution of reducing agent being isolated from said solution of oxidizing agent, at least one of said solution of reducing agent and oxidizing agent being contained within a rupturable pod within said pouch, said container having a slit of a size and shape permitting removal of one of said pouches from said container by sliding the same through said slit, said slit having means to rupture said rupturable pod whereupon, with removal of said pouch from said container, said pod is ruptured and said solution of oxidizing agent mixes with said solution of reducing agent in contact with said towel and an exothermic reaction is initiated.
Claim 2
Dependent Claim
151 words
In combination, a stack of pouches, one on top of another, in a container of size and shape to accommodate said stack of pouches, each of said pouches containing a towel, a solution of an oxidizing agent and a solution of a reducing agent, said solution of reducing agent being isolated from said solution of oxidizing agent, at least one of said solution of reducing agent and oxidizing agent being contained within a rupturable pod within said pouch, said container having a slit of a size and shape permitting removal of one of said pouches from said container by sliding the same through said slit, said slit having means to rupture said rupturable pod whereupon, with removal of said pouch from said container, said pod is ruptured and said solution of oxidizing agent mixes with said solution of reducing agent in contact with said towel and an exothermic reaction is initiated.
Claim 3
Dependent Claim
22 words
The combination of claim 1 where said means to rupture the rupturable pod is at least one projection extending into said slit.
Claim 4
Dependent Claim
11 words
The combination of claim 2 wherein said projection is of metal.
Claim 5
Dependent Claim
16 words
The combination of claim 1 where the solution of oxidizing agent is in the rupturable pod.
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) | 1980-01-25 | 1980-07-26 | 1981-01-25 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1984-01-25 | 1984-07-26 | 1985-01-25 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1988-01-25 | 1988-07-26 | 1989-01-25 | $7700.00 | Window Closed / Lapsed |