US2009151102A1PendingUtilityA1

Wash cloth

57
Individually held — no corporate assignee on recordPriority: Dec 13, 2007Filed: Dec 13, 2007Published: Jun 18, 2009
Est. expiryDec 13, 2027(~1.4 yrs left)· nominal 20-yr term from priority
Inventors:James A. Donovan
A47K 7/02
57
PatentIndex Score
0
Cited by
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References
0
Claims

Abstract

A washcloth or other personal hygiene cloth having an adjustable temperature when used. A first ply of fabric has a dry temperature changing chemical embedded on it to form an embedded surface and at least one additional ply of fabric is placed to cover the embedded surface. The addition of water to the device causes the dry temperature changing chemical to change the temperature of the washcloth device. The temperature changing chemical can be one that heats or one that cools the washcloth. More plies may be added to increase the thickness of the device.

Claims

exact text as granted — not AI-modified
1 . A washcloth device having an adjustable temperature when used, comprising:
 a first ply of fabric;   a dry temperature changing chemical embedded on the first ply to form an embedded surface; and   at least one additional ply of fabric covering the embedded surface;   whereby the addition of water to the device causes the dry temperature changing chemical to change the temperature of the washcloth device.   
   
   
       2 . The device of  claim 1 , wherein the device includes at least one additional fabric ply. 
   
   
       3 . The device of  claim 1 , wherein the fabric is comprised of cellulose fibers. 
   
   
       4 . The device of  claim 1 , wherein the dry temperature changing chemical is a heat generating chemical. 
   
   
       5 . The device of  claim 6 , wherein the heat generating chemical is a crystalline material embedded in the first ply of fabric. 
   
   
       6 . The device of  claim 5 , wherein the crystalline material is calcium oxide. 
   
   
       7 . The device of  claim 6 , wherein the calcium oxide is calcined prior to forming the crystalline mixture and the crystalline material further includes a zeolite in a ratio of calcium oxide to powdered zeolite of from about 14 to 20 for calcium oxide and from about 7 to 10 for powdered zeolite. 
   
   
       8 . The device of  claim 7 , which further includes a quantity of exotherm delaying material coating the heat source to slow down the penetration of the actuation agent. 
   
   
       9 . The device of  claim 8 , wherein the exotherm delaying material is a polyalkyl glycol. 
   
   
       10 . The device of  claim 1 , wherein the dry temperature changing chemical is a temperature lowering material. 
   
   
       11 . The device of  claim 10 , wherein the temperature lowering material is selected from the group consisting of sodium sulfate*10H 2 O; sodium bicarbonate, ammonium nitrate, ammonium chloride, urea, ammonium dichromate, citric acid, potassium perchlorate, potassium sulfate, potassium chloride, calcium nitrate, vanillin. 
   
   
       12 . A method of making a washcloth device having an adjustable temperature when used, comprising the steps of:
 providing a first ply of fabric;   embedding a dry temperature changing chemical on the first ply to form an embedded surface; and   placing at least one additional ply of fabric covering the embedded surface;   whereby the addition of water to the device causes the dry temperature changing chemical to change the temperature of the washcloth device.   
   
   
       13 . The method of  claim 12 , wherein the fabric is comprised of cellulose fibers. 
   
   
       14 . The method of  claim 12 , wherein the dry temperature changing chemical is a heat generating chemical. 
   
   
       15 . The method of  claim 14 , wherein the heat generating chemical is a crystalline material embedded in the first ply of fabric. 
   
   
       16 . The method of  claim 15 , wherein the crystalline material is calcium oxide. 
   
   
       17 . The method of  claim 16 , wherein the calcium oxide is calcined prior to forming the crystalline mixture and the crystalline material further includes a zeolite in a ratio of calcium oxide to powdered zeolite of from about 14 to 20 for calcium oxide and from about 7 to 10 for powdered zeolite. 
   
   
       18 . The device of  claim 17 , which further includes a quantity of exotherm delaying material coating the heat source to slow down the penetration of the actuation agent. 
   
   
       19 . The device of  claim 18 , wherein the exotherm delaying material is a polyalkyl glycol. 
   
   
       20 . The method of  claim 12 , wherein the dry temperature changing chemical is a temperature lowering material.

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