Electric heating – Heating devices – Combined with diverse-type art device
Patent
1976-05-17
1978-06-27
Albritton, C. L.
Electric heating
Heating devices
Combined with diverse-type art device
5366, 128376, 219313, H05B 100
Patent
active
040977170
ABSTRACT:
A water bed mattress with means for heating the same and with means for controlling heat losses therefrom. In one embodiment of the invention, the water bed mattress comprises a pair of upper and lower sheets connected by a peripheral side wall to form a water chamber therein. An electrically energizable heating element is located adjacent one of the sheets and is enclosed by a piece of plastic forming a heat-generating chamber therein. An electrical cord extends outwardly from this heat-generating chamber for ultimate connection to a source of electrical power. The actual electrically energizable heating means may adopt a variety of forms including a coil located in the heat generating chamber, or otherwise a strip heater or similar forms of heating elements. A heat sensor may be located within the water chamber and is connected to a feedback controller which is in turn connected through a temperature regulator, such as a variostat, to the heating means. In this way, constant temperature is maintained in the water within the water chamber. The present invention also provides various embodiments with means for reducing heat loss from the water chamber including a heat insulating strip over the upper surface of the water bed mattress. In other embodiments, the water bed mattress is actually formed of a rigid chamber-forming member with a relatively flexible plastic sheet disposed across the chamber-forming member. In each of these cases, heating means are also provided for heating the water in the water chamber. In several embodiments of the present invention, the electrically energizable heater is included within a liner disposed around the water bed mattress.
REFERENCES:
patent: 3585356 (1971-06-01), Hall
patent: 3736604 (1973-06-01), Carson, Jr.
patent: 3746835 (1973-07-01), Yu et al.
patent: 3778852 (1973-12-01), Penn et al.
Albritton C. L.
Schaap Robert J.
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