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Secondary power supply system and method of activating subsystems from a vehicle steering wheel

  • US 7,405,540 B2
  • Filed: 10/12/2004
  • Issued: 07/29/2008
  • Est. Priority Date: 10/20/2003
  • Status: Active Grant
First Claim
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1. A method for powering at least one subsystem switch provided on a steering wheel assembly of a marine vehicle, comprising:

  • providing a rechargeable accumulator having an energy level, in said steering wheel assembly;

    powering said switch from said accumulator;

    providing an energy source in said marine vehicle, able to induce recharge energy into said accumulator;

    comparing one ofa detected value of said energy level with an energy threshold value corresponding to a value of said energy level sufficient to power said at least one switch and enable its use, anda detected time elapsed since recharge energy was induced into said accumulator with a time threshold value corresponding to a time after which said energy level equals said energy threshold value,determining one of a sufficiency and an insufficiency of said energy level upon said comparison;

    if said comparison yields said insufficiency, instructing said energy source to recharge said accumulator, thereby increasing said energy level; and

    repeating said steps of comparing, determining, and instructing thereby ensuring said sufficiency.

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