ELECTRICALLY-HEATED, INSULATED WARMING BAG FOR IGNITION SYSTEM INTERLOCK DEVICE
First Claim
1. A warming bag for storing the handheld unit of an ignition interlock device while the latter is not in use so that it can be removed from the bag and used immediately without generating device read errors caused by internal condensation, the warming bag comprising:
- a wall having inner and outer insulation layers;
resistive wire pattern sandwiched between said inner and outer insulation layers;
a power cord connected to said resistive wire pattern;
a plug coupled to said power cord which engages an automotive power receptacle; and
a sealable opening.
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Accused Products
Abstract
An electrically-heated insulated warming bag, in which the handheld unit of an ignition interlock device can be stored while not in use so that the handheld unit can be used on cold days without experiencing condensation problems, plugs into a cigarette lighter receptacle. The warming bag, which has resistive wire pattern sandwiched between an insulation layer and an inner lining layer, also has an outer cover which overlies the insulation layer. The stack, consisting of the outer cover, the insulation layer, the resistive wire pattern, and the inner lining layer, is folded over and sewn around the resulting perimeter to create the bag. One side, which is left open to provide entry to the interior of the bag, is sealable by means of hook and loop fastener strips, which are sewn to inside opposite edges of the opening. The bag may incorporate a thermostat to minimize power consumption.
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Citations
20 Claims
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1. A warming bag for storing the handheld unit of an ignition interlock device while the latter is not in use so that it can be removed from the bag and used immediately without generating device read errors caused by internal condensation, the warming bag comprising:
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a wall having inner and outer insulation layers; resistive wire pattern sandwiched between said inner and outer insulation layers; a power cord connected to said resistive wire pattern; a plug coupled to said power cord which engages an automotive power receptacle; and a sealable opening. - View Dependent Claims (2, 3, 5, 6, 7, 8, 9, 10)
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11. A method of fabricating a warming bag for storing the handheld unit of an ignition interlock device while the latter is not in use so that it can be removed from the bag and used immediately without generating device read errors caused by internal condensation, said method comprising the steps of:
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creating a generally rectangular multilayer stack including an outer cover layer, an outer insulation layer, a resistive wiring pattern layer, and an inner insulation layer; folding said multilayer stack about a centerline; and sewing together a lower edge and a side edge of the folded multilayer stack to form a bag having an upper opening. - View Dependent Claims (12, 13, 14, 15, 16, 17, 18, 19, 20)
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Specification