US5476490A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Heating pad
Assignee: Prism Enterprises LP
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Filing: 1994-05-10
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Granted: 1995-12-19
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Expires: 2014-05-10
Abstract
Abstract A heating pad is disclosed. The heating pad is essentially "C-shaped" and is filled with a chemical composition. When activated by the triggering device, the chemical composition undergoes a reversible exothermic reaction and generates heat that warms the breast or other body part with which it is in contact. Because of its shape, the heating pad fits comfortably around the human female breast and efficiently transfers heat to the breast when activated. Also disclosed is an embodiment where the heating pad is connected to a breast pump so that the heating pad warms the breast while the breast pump is being used.
Inventors
- 👤 Brian Silver
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-02 21:20
CPC Classifications
A; A61; A61F; A61F7/00; A61F7/02; A61F7/03; A61F2007/0001; A61F2007/0018; A61F2007/0021; A61F2007/0292; A61F2007/0293; A61M; A61M1/00; A61M1/06; A61M1/062; A61M1/064; A61M1/066; A61M2205/00; A61M2205/36; A61M2205/364
Claims Analysis
Total Claims: 20
Claim 1
Independent Claim
94 words
A heating pad adapted for use in warming the breast of a lactating woman, comprising: a hollow, flattened, flexible, interrupted toroidal container, said container being sized to encompass a substantial portion of a woman's breast centered around the nipple, said flexibility provided to said container enabling said container to conform around a breast to which it is applied; and a chemical composition permanently sealed inside said container that undergoes an exothermic reaction when triggered, and that may be recharged after completion of the exothermic reaction for re-use of the pad in warming a breast.
Claim 2
Dependent Claim
94 words
A heating pad adapted for use in warming the breast of a lactating woman, comprising: a hollow, flattened, flexible, interrupted toroidal container, said container being sized to encompass a substantial portion of a woman's breast centered around the nipple, said flexibility provided to said container enabling said container to conform around a breast to which it is applied; and a chemical composition permanently sealed inside said container that undergoes an exothermic reaction when triggered, and that may be recharged after completion of the exothermic reaction for re-use of the pad in warming a breast.
Claim 3
Dependent Claim
18 words
The heating pad of claim 1 wherein the exothermic reaction is reversible and the heating pad is re-usable.
Claim 4
Dependent Claim
53 words
A heating pad comprising: a hollow, flattened, interrupted toroidal container; a chemical composition inside said container that undergoes an exothermic reaction when triggered, and that may be recharged after completion of the exothermic reaction; and a retractable nipple cover that is contiguous with said container and contains a portion of said chemical composition.
Claim 5
Dependent Claim
53 words
A heating pad comprising: a hollow, flattened, interrupted toroidal container; a chemical composition inside said container that undergoes an exothermic reaction when triggered, and that may be recharged after completion of the exothermic reaction; and a retractable nipple cover that is contiguous with said container and contains a portion of said chemical composition.
Claim 6
Dependent Claim
16 words
The heating pad of claim 1 wherein the chemical composition is a solution of sodium acetate.
Claim 7
Dependent Claim
33 words
The heating pad of claim 4 wherein the chemical composition comprises a concentration of sodium acetate sufficient to generate a temperature of about 98.6° to about 135° F. in response to being triggered.
Claim 8
Dependent Claim
19 words
The heating pad of claim 1 wherein the exothermic reaction is triggered by the flexing of a metal disk.
Claim 9
Dependent Claim
25 words
The heating pad of claim 1 wherein the heating pad achieves a temperature of about 98.6° to about 135° F. in response to being triggered.
Claim 10
Dependent Claim
25 words
The heating pad of claim 1 wherein the heating pad achieves a temperature of about 110° to about 120° F. in response to being triggered.
Claim 11
Dependent Claim
39 words
The heating pad of claim 1 wherein the container further comprises: a front side that is adapted to contact a breast; and a back side that is peripherally connected to said front side so as to form said container.
Claim 12
Dependent Claim
21 words
The heating pad of claim 9 wherein the front side has a cloth surface that is adapted to contact the breast.
Claim 13
Dependent Claim
21 words
The heating pad of claim 9 wherein at least a portion of the front side or the back side is transparent.
Claim 14
Dependent Claim
18 words
The heating pad of claim 9 wherein the front side and the back side comprise plastic sheeting material.
Claim 15
Dependent Claim
13 words
The heating pad of claim 1 wherein the container has a flattened edge.
Claim 16
Independent Claim
77 words
A method for making a heating pad comprising the steps of: (a) providing a front piece comprising a water-proof material; (b) sealing a back piece comprising a water-proof material to the front piece so as to form a C-shaped container; (c) die-cutting the edges of the container; (d) placing a chemical composition that is capable of undergoing an exothermic reaction inside the container; and (e) placing a triggering device that instigates the exothermic reaction inside the container.
Claim 17
Independent Claim
77 words
A method for making a heating pad comprising the steps of: (a) providing a front piece comprising a water-proof material; (b) sealing a back piece comprising a water-proof material to the front piece so as to form a C-shaped container; (c) die-cutting the edges of the container; (d) placing a chemical composition that is capable of undergoing an exothermic reaction inside the container; and (e) placing a triggering device that instigates the exothermic reaction inside the container.
Claim 18
Dependent Claim
28 words
The method of claim 14 wherein step (c) further comprises cutting the edges so that the edges are curved away from the front piece of the heating pad.
Claim 19
Dependent Claim
64 words
A heating pad comprising: a C-shaped front piece comprising a water-proof material; a C-shaped back piece comprising a water-proof material that is peripherally sealed to the front piece so as to form a container; a chemical composition that is capable of undergoing an exothermic reaction, and that is present inside the container; and a triggering device inside the container that instigates the exothermic reaction.
Claim 20
Dependent Claim
64 words
A heating pad comprising: a C-shaped front piece comprising a water-proof material; a C-shaped back piece comprising a water-proof material that is peripherally sealed to the front piece so as to form a container; a chemical composition that is capable of undergoing an exothermic reaction, and that is present inside the container; and a triggering device inside the container that instigates the exothermic reaction.
References Cited (Backward Citations)
US986738A
Cited
GB533493A
Cited
US2298361A
Cited
GB660283A
Cited
US4077390A
Cited
DE2807646A1
Cited
US4263912A
Cited
US4323067A
Cited
GB2155792A
Cited
US4572158A
Cited
US4740196A
Cited
US4872442A
Cited
US4880953A
Cited
US5050595A
Cited
US5074300A
Cited
US5058563A
Cited
US5230335A
Cited
US5235974A
Cited
US5304215A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1998-12-18 | 1999-06-19 | 1999-12-19 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 2002-12-18 | 2003-06-19 | 2003-12-19 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 2006-12-18 | 2007-06-19 | 2007-12-19 | $7700.00 | Window Closed / Lapsed |