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Engine running time indicator

  • US 3,965,669 A
  • Filed: 02/18/1975
  • Issued: 06/29/1976
  • Est. Priority Date: 02/18/1975
  • Status: Expired due to Term
First Claim
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1. A running-time indicator for use with an engine comprising generator means driven by said engine for generating electric power above and below a threshold power level when the speed of said engine is respectively above and below a predetermined speed, and electronic clock means including means for measuring time that elapses only while said generated electric power is above said threshold power level, said electronic clock means being electrically powered solely by said generator means.

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