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Means for distinguishing between batteries capable of being fast charged and other batteries and for charging same accordingly

  • US 5,057,761 A
  • Filed: 01/11/1990
  • Issued: 10/15/1991
  • Est. Priority Date: 01/11/1990
  • Status: Expired due to Term
First Claim
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1. A battery charger having means to distinguish between batteries capable of being fast charged and batteries that should be slower charged comprising a housing having a compartment portion for installing a dry cell battery having a cylindrical body with terminals at both ends, one terminal being centrally located and extending outwardly from the body, said batteries being fast charged having central terminals of smaller diameter than other batteries, the compartment portion including an elongated channel having opposite ends, a contact at one end for engagement bby the central terminal of the one end of said battery, and spring biased plate means in the channel for engaging the terminal at the opposite end of the battery urging the central terminal against the contact, said contact having an opening therethrough in position to be aligned with the central battery terminal, said opening being large enough to admit the central terminals of said fast charge batteries but not of said other batteries therethrough, switch means having a switch actuator positioned adjacent to the contact on the opposite side thereof from the battery, said fast charge batteries having said central terminals that are small enough to move into the opening moving against the switch actuator and moving the switch actuator far enough to actuate the switch means associated therewith.

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