Explosion proof lantern
First Claim
Patent Images
1. A portable lantern, comprising:
- at least one light emitting diode;
a rechargeable battery;
a secondary induction coil connected to the rechargeable battery and configured to provide charging current to the rechargeable battery;
at least three fault diodes connected between the rechargeable battery and ground; and
at least one fuse and resistor array connected between the rechargeable battery and the light emitting diode.
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Accused Products
Abstract
A portable rechargeable lantern capable of use in an explosive environment includes light emitting diode light source, fault tolerant circuitry, a rechargeable battery and a charging circuit that receives power from an external charger via an induction coil. Formed within a sealed housing, the induction coil charging system eliminates external metal contacts, thereby eliminating a potential ignition source during charging operations. Fault tolerant circuitry and a cool-running light emitting diode light source eliminate potential ignition sources due to breakage or fault conditions. Mating surfaces between the lantern and its charger cradle facilitate aligning the charging induction coils.
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Citations
28 Claims
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1. A portable lantern, comprising:
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at least one light emitting diode; a rechargeable battery; a secondary induction coil connected to the rechargeable battery and configured to provide charging current to the rechargeable battery; at least three fault diodes connected between the rechargeable battery and ground; and at least one fuse and resistor array connected between the rechargeable battery and the light emitting diode. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10, 11)
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12. A portable rechargeable lantern system, comprising:
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a lantern comprising; at least one light emitting diode; a rechargeable battery; a secondary induction coil connected to the rechargeable battery to provide charging current to the rechargeable battery; at least three fault diodes connected between the rechargeable battery and ground; and at least one fuse and resistor array connected between the rechargeable battery and the at least one light emitting diode; and a charging cradle comprising; a power source; a charging post; and a primary induction coil disposed within the charging post and electrically connected to the power source. - View Dependent Claims (13, 14, 15, 16, 17, 18, 19, 20, 21, 22, 23, 24, 25, 26, 27, 28)
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Specification