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Three-component protective head gear powered by a rechargeable battery

  • US 7,075,250 B2
  • Filed: 12/02/2003
  • Issued: 07/11/2006
  • Est. Priority Date: 12/02/2003
  • Status: Expired due to Fees
First Claim
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1. A protective helmet providing at least one illuminating LED array, including a circuit driven by at least one battery for powering amplifying means to drive the array, the circuit comprising:

  • a comparator, the battery providing an input voltage and a reference voltage for the comparator, the comparator being turned on when the input voltage exceeds the reference voltage, a semiconductor device actuated by the comparator, and functioning as a shunt to maintain a load voltage constant for voltage/current variations as the battery is worn down, and amplifiers connected to the battery, semiconductor device and comparator for turning on the LED array.

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