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Switching system for battery jumper cables

  • US 4,972,135 A
  • Filed: 08/04/1989
  • Issued: 11/20/1990
  • Est. Priority Date: 08/04/1989
  • Status: Expired due to Fees
First Claim
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1. A switching system for interconnecting first and second batteries through jumper cables which can be connected to the system in a first correct polarity and a second incorrect polarity, comprising;

  • a first manual switch means arranged to connect the batteries in correct polarity when the jumper cables are connected in the first correct polarity;

    a second manual switch means arranged to connect the batteries incorrectly polarity where the jumper cables are connected in the second incorrect polarity;

    means latching each of the first and second switch means in an open position in which battery interconnection is prevented;

    circuit means for sensing the polarity in which the jumper cables are connected, and including an unlatching means for each switch means, the circuit being arranged to actuate the unlatching means which will enable one of the switching means to be manually actuated to a closed position to interconnect the batteries in correct polarity.

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