초록 ▼

An improved battery charger of the type having a housing with a source of electrical energy therein suitable for recharging units capable of being electrically recharged. The housing includes a plurality of cavities each arranged to accommodate a unit to be recharged, and each cavity has electrical

An improved battery charger of the type having a housing with a source of electrical energy therein suitable for recharging units capable of being electrically recharged. The housing includes a plurality of cavities each arranged to accommodate a unit to be recharged, and each cavity has electrical contacts which are positioned to contact the terminals of the unit inserted into each cavity for delivering electrical energy to that unit. The improvement comprises a switch in each cavity which is activatable by insertion of the unit therein, the switch being separate from and free from direct contact with the electrical contacts, but electrically connected to the energy source which, in turn, energizes the electrical contacts for recharging the unit upon activation of the switch. A battery pack unit capable of being recharged including a housing with a first pair of electrically conductive metallic strips on the outside of a side portion thereof, and a second pair of metallic strips on the outside of a top portion of the housing. A plurality of batteries is in the housing, the batteries being electrically connected to each other and to both pairs of the metallic strips. One of the strips in each pair is a negative terminal and the other strip in each pair is a positive terminal for the pack unit.

대표청구항 ▼

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

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.