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Improperly inserted battery detector

  • US 5,103,216 A
  • Filed: 03/09/1990
  • Issued: 04/07/1992
  • Est. Priority Date: 06/12/1989
  • Status: Expired due to Fees
First Claim
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1. A surface mountable electrical unit powered at least in part by a battery comprising a surface mountable base with the battery carriable thereon, a moveable cover closable against said base, andan essentially rigid member carried on said cover, oriented to block closure thereof against said base if the battery is not properly positioned in and electrically coupled to the unit.

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  • 3 Assignments
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