Apparatus comprising an electrical device and a battery holder

Details Apparatus comprising an electrical device and a battery holder Apparatus comprising an electrical device and a battery holder

1997-05-28

1999-06-29

Kalafut, Stephen

Chemistry: electrical current producing apparatus, product, and

Having polarity safety feature

429 97, 327581, 381323, H01M 210

Patent

active

059166983

ABSTRACT:
An apparatus comprising an electrical device having a first connection terminal, a second connection terminal and a holder for holding a voltage source having two voltage-source terminals. The holder has a first contact, a second contact and a third contact for cooperation with the voltage-source terminals. Via these contacts the first connection terminal is connectable to one voltage-source terminal and the second connection terminal is connectable to the other voltage-source terminal. The holder is adapted to allow the first contact, the second contact and the third contact to engage simultaneously with the voltage-source terminals. When the voltage source is present the first contact and one of the two other contacts are in engagement with one of the voltage-source terminals, and the other contact, which is not in engagement with the first voltage-source terminal, is in engagement with the second voltage-source terminal. The first contact is connected to the first connection terminal of the electrical device and the second contact and the third contact are connected to, respectively, a first input and a second input of a FET circuit. The FET circuit has an output connected to the second connection terminal of the electrical device.

REFERENCES:
patent: 3062911 (1962-11-01), Joy
patent: 5089728 (1992-02-01), Nguyen
patent: 5378549 (1995-01-01), Eylon
patent: 5541495 (1996-07-01), Gali

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