Charging apparatus for wireless device with magnetic lead switch

Details Charging apparatus for wireless device with magnetic lead switch Charging apparatus for wireless device with magnetic lead switch

1997-02-12

1999-02-23

Gross, Anita Pellman

Registers

Coded record sensors

Particular sensor structure

235439, 235441, 320115, G06K 710

Patent

active

058747230

ABSTRACT:
A charging apparatus suitable for use with a wireless device, which is capable of eliminating the occurrence of an electric shock and an electrical short due to an operator's contact with charging terminals of the wireless device upon non-charging of the wireless device. The charging apparatus comprises a charger including a wireless device placement portion, a pair of charging terminals exposed to the wireless device placement portion, a charging circuit portion for supplying power for charging the wireless device to the charging terminals, and a built-in magnet; and the wireless device including a secondary battery, a pair of power receiving terminals respectively provided at positions where they are brought into contact with the charging terminals when the wireless device is placed in the wireless device placement portion, and a magnetic switch. When the wireless device is placed in the wireless device placement portion and the magnetic switch detects magnetism of the magnet, the secondary battery is electrically connected to the pair of power receiving terminals so as to charge the secondary battery.

REFERENCES:
patent: 3200320 (1965-08-01), Mallory
patent: 4290059 (1981-09-01), Noyes et al.
patent: 4441066 (1984-04-01), Burmenko
patent: 4945216 (1990-07-01), Tanabe et al.
patent: 5250892 (1993-10-01), Yang
patent: 5465038 (1995-11-01), Register
patent: 5468948 (1995-11-01), Koenck et al.
patent: 5521370 (1996-05-01), Hanson
patent: 5536979 (1996-07-01), McEachern et al.

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