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Battery charger

  • US 4,227,140 A
  • Filed: 02/16/1978
  • Issued: 10/07/1980
  • Est. Priority Date: 02/16/1978
  • Status: Expired due to Term
First Claim
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1. A battery charger comprising:

  • a housing having means therein for providing electrical energy suitable for recharging units capable of being electrically recharged,said housing having at least one energy value indicating meter mounted on an outside surface thereof,said meter adapted to indicate the recharged level of said unit,said housing including two cavities therein each arranged to accommodate a unit to be recharged and defined by a bottom, two opposed side walls, and two opposed end walls;

    two curved, resilient, electrical contact, leaf springs each having a pronounced arc projecting through one of said end walls into each cavity;

    said recharging units having recesses in a side wall thereof aligned with said contact springs;

    contact terminals disposed in said recesses of said unit inserted into each cavity and positioned to deflect said contact springs sufficiently to provide good electrical contact therebetween to deliver electrical energy to said unit whereby good electrical contact is provided between said contact springs and said terminals but without placing the entire weight of the units on the contact spring;

    a switch projecting into each cavity activatable by insertion of the unit therein, said switch being separate from and free from direct contact with said electrical contacts but electrically connected to said energy providing means which, in turn, energizes said electrical contacts for recharging the unit upon activation of said switch;

    and a pair of covers, one for placement over each of said cavities for protection thereof.

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