Electric heating – Microwave heating – With control system
Patent
1997-06-30
1998-07-28
Leung, Philip H.
Electric heating
Microwave heating
With control system
219710, 219762, 116216, 374150, 374161, 523137, 607 78, 607102, H05B 680
Patent
active
057865787
ABSTRACT:
A microwave-heatable therapeutic exercise putty mass is packaged in a microwaveable container having at least one transparent wall. The putty mass within the container is in heat transfer proximity with transparent wall of the container. A thermochromic heat sensitive semiconductor material (strip, label or coating) is affixed to the transparent wall in intimate heat transfer contact with the putty mass. The thermochromatic material provides a visual first indication through the transparent wall when the putty mass has been microwave heated to a heat exercise therapy acceptable temperature range of about 40 to about 47 degrees C. and a visual second indication through the transparent wall when the putty mass has been microwave heated to a temperature range of about 54 to about 60 degrees C. or above which is non-acceptable for heat exercise therapy.
REFERENCES:
patent: 4786773 (1988-11-01), Keefer
patent: 4933525 (1990-06-01), St. Phillips
patent: 5319021 (1994-06-01), Christy
patent: 5369257 (1994-11-01), Gibbon
patent: 5446075 (1995-08-01), Gibbon
patent: 5464968 (1995-11-01), Germain et al.
patent: 5472994 (1995-12-01), Micallef et al.
Christy George M.
Parker Robert
Junkins Philip D.
Leung Philip H.
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