Heating and cooling blanket

• US 4,132,262 A
• Filed: 01/17/1977
• Issued: 01/02/1979
• Est. Priority Date: 01/17/1977
• Status: Expired due to Term

• Current Assignee: Joan Wibell
• Original Assignee: Joan Wibell
• Inventors: Wibell, Joan
• Primary Examiner(s): Davis, Jr., Albert W.
• Application Number:
  US05/759,797
• Time in Patent Office: 715 Days
• Field of Search: 165/46, 165/26, 62/261, 219/212
• US Class Current: 165/206
• CPC Class Codes: A47G 9/0215 with cooling or heating means electric blankets H05B3/34
• CPC Class Codes: F25D 17/02 for circulating liquids, e.g. brine
• CPC Class Codes: H05B 3/34 flexible, e.g. heating nets or webs

Abstract

A cooling and heating blanket comprising a blanket enclosure with heating means including a plurality of flexible elements positioned within the enclosure for being electrically energized for supplying heat to the enclosure, such that the enclosure may be retained above room temperature, and cooling means including a plurality of flexible fluid carrying conduits positioned within the enclosure through which a heat transfer fluid can flow, such that the enclosure may be retained below room temperature. Control means including an electric motor and a pump driven thereby located remotely relative to the enclosure is provided with flexible conduit means connecting the enclosure and the cooling means, and regulating means is operatively associated with the heating means and the cooling means. The regulating means being adapted to energize the control means or the heating means in response to increases and decreases of the temperature associated with the enclosure, such that the temperature of the blanket may be retained above or below the room temperature in which the blanket is located.

Claims

1. A cooling and heating blanket comprising:

a. a blanket enclosure,

b. heating means including a plurality of flexible elements positioned within said enclosure for being electrically energized for supplying heat to said enclosure, such that said enclosure may be retained above room temperature,

c. cooling means including a plurality of flexible fluid carrying conduits positioned within said enclosure through which a heat transfer fluid can flow, such that said enclosure may be retained below room temperature,

d. control means including an electric motor and a pump driven thereby located remotely relative to said enclosure,

e. flexible conduit means connecting said enclosure and said cooling means,

f. regulating means operatively associated with said heating means and said cooling means, said regulating means adapted to energize said control means or said heating means in response to increases and decreases of the temperature associated with said enclosure, such that the temperature of the blanket may be retained above or below the room temperature in which the blanket is located,

g. said enclosure is divided into at least two major sections and each one of said sections may be independently regulated from said heating means or said cooling means,

h. said major sections are each divided into respective zones,

i. each one of said zones being independently controllable by said regulating means such that different respective portions of the human body may be concurrently maintained at temperatures ranging from below to above room temperature by said heating means and said cooling means, and

j. said zones include;

(1) an upper zone for maintaining the upper torso of the body at a preselected temperature,

(2) an intermediate zone for maintaining the lower torso at a preselected temperature, and

(3) a lower zone for maintaining the legs at a preselected temperature.

2. A cooling and heating blanket as in claim 1, wherein

a. said regulating means includes a switch having a bimetallic element adapted to open and close said switch in response to increases and decreases in the temperature of said bimetallic element, and

b. said bimetallic element being movable from one position in which said heating means is electrically energized to another position in which said cooling means is energized, such that said enclosure may be maintained at the desired temperature.

3. A cooling and heating blanket as in claim 1, wherein said enclosure is adapted to be used by two persons, with each said major section coinciding with one half of said enclosure.

4. A cooling and heating blanket as in claim 1, wherein said regulating means is operatively associated with each one of said respective zones.

5. A cooling and heating blanket as in claim 1, including fastening means within said enclosure for maintaining said flexible elements and said conduits in substantially fixed spaced relationship to each other.

6. A cooling and heating blanket as in claim 5, wherein said enclosure includes spaced apart inner and outer layers of fabric material forming the exterior surfaces of said enclosure.

7. A cooling and heating blanket as in claim 6, including energy reflecting means interposed between said fastening means and said outer layer of fabric so as to aid in retaining the temperature level of said enclosure.

8. A cooling and heating blanket as in claim 5, said fastening means including:

a. a first resilient strap having alternate first sections engaging said conduits along one side thereof and first intermediate sections integrally formed with and between said alternate first sections for engagement with an oppositely disposed side of said flexible elements, and

b. a second resilient strap mounted in interlocking relationship to said first resilient strap by means of alternate second sections engaging said conduits along an oppositely disposed side as compared to said first sections, and second intermediate sections integrally formed with and between said second sections for engagement with an oppositely disposed side of said flexible elements as compared to said first intermediate sections.

9. A cooling and heating blanket as in claim 1, wherein said control means includes:

a. a fluid reservoir having fluid therein for pumping through said conduits by said motor,

b. a compressor,

c. a condenser operatively connected to said reservoir and said compressor,

d. a compressor motor for driving said compressor, and

e. a thermostat in said reservoir for determining when said compressor motor is to be energized or deenergized depending upon when the temperature of the fluid falls below or rises above predetermined temperature levels.

10. A cooling and heating blanket as in claim 9, including an input manifold and an output manifold, said input manifold connected to said motor and to said conduits to supply fluid thereto, and said output manifold connected to said conduits and said reservoir for the return flow of the fluid.

11. A cooling and heating blanket comprising:

a. a blanket enclosure having at least upper and lower zones generally covering the torso and legs of the person using the blanket,

b. heating means operatively associated with each of said zones, each of said heating means comprising a plurality of flexible elements positioned within said enclosure for being electrically energized for supplying heat to a respective zone of said enclosure, such that each one of said zones of said enclosure may be retained at relative temperatures,

c. cooling means operatively associated with each of said zones, each of said cooling means comprising a plurality of flexible fluid carrying conduits positioned within each of said zones of said enclosure through which a heat transfer fluid can flow, such that each one of said zones of said enclosure may be retained at relative temperatures,

d. control means operatively associated with each of said zones, each of said control means comprises an electric motor and a pump driven thereby located remotely relative to said enclosure,

e. flexible conduit means connecting said enclosure and said cooling means,

f. regulating means operatively associated with said heating means and said cooling means of each of said zones, each of said regulating means adapted to energize said control means or said heating means of a respective one of said zones in response to increases and decreases of the temperature associated with each one of said zones of said enclosure, so as to permit the temperature of said zones to be independently retained above or below predetermined temperature levels, such that the person using the blanket may obtain selective temperature levels for body comfort that may be concurrently maintained,

g. fastening means within said enclosure for maintaining said flexible elements and said conduits in each of said zones in substantially fixed spaced relationship to each other, and

h. said fastening means including;

(1) a first resilient strap having alternate first sections engaging said conduits along one side thereof and first intermediate sections integrally formed with and between said alternate first sections for engagement with an oppositely disposed side of said flexible elements, and

(2) a second resilient strap mounted in interlocking relationship to said first resilient strap by means of alternate second sections engaging said conduits along an oppositely disposed side as compared to said first sections, and second intermediate sections integrally formed with and between said second sections for engagement with an oppositely disposed side of said flexible elements as compared to said first intermediate sections.

12. A cooling and heating blanket as in claim 11, including an intermediate zone interposed between said upper and lower zones for maintaining the lower torso at a preselected temperature.

13. A cooling and heating blanket as in claim 11, wherein

a. said regulating means for each one of said zones includes a switch having a bimetallic element adapted to open and close said switch in response to increases and decreases in the temperature of said bimetallic element,

b. said bimetallic element being movable from one position in which said heating means is electrically energized to another position in which said cooling means is energized, such that each of said zones of said enclosure may be maintained at the desired temperature, and

c. adjusting means manually engageable by the user to preselect the desired temperature for a given zone.

14. A cooling and heating blanket as in claim 11, wherein said enclosure is divided into at least two major sections and each one of said sections having said zones therein and being independently regulated from said heating means or said cooling means, such that said enclosure is adapted to be used by two persons, with each said major section coinciding with one half of said enclosure.

15. A cooling and heating blanket as in claim 11, wherein said enclosure includes spaced apart inner and outer layers of fabric material forming the exterior surfaces of said enclosure.

16. A cooling and heating blanket as in claim 15, including energy reflecting means interposed between said fastening means and said outer layer of fabric so as to aid in retaining the temperature level of said enclosure.

17. A cooling and heating blanket as in claim 11, wherein said control means is operatively connected to each of said zones, and each said control means includes:

a. a fluid reservoir having fluid therein for pumping through said conduits by said motor,

b. a compressor,

c. a condenser operatively connected to said reservoir and said compressor,

d. a compressor motor for driving said compressor, and

e. a thermostat in said reservoir for determining when said compressor motor is to be energized or deenergized depending upon when the temperature of the fluid falls below or rises above predetermined temperature levels.

18. A cooling and heating blanket as in claim 17, including an input manifold and an output manifold, said input manifold connected to said motor and to said conduits to supply fluid thereto, and said output manifold connected to said conduits and said reservoir for the return flow of the fluid.