Electricity: battery or capacitor charging or discharging – Battery or cell discharging – Regulated discharging
Patent
1997-09-08
1999-10-05
Wong, Peter S.
Electricity: battery or capacitor charging or discharging
Battery or cell discharging
Regulated discharging
307 103, 340426, 340428, H02J 700, B60R 2504
Patent
active
059630183
ABSTRACT:
A battery immobilizer is described in which power provided by the battery to the ignition switch of an automobile is discontinued when the starter motor of the automobile is engaged without proper previous authorization. The authorization is provided by entry of a user code on a keypad within the automobile compartment. Once the code is entered, the automobile will start as normal, but if the code is not entered the battery will intelligently provide power to resistive loads while disconnecting power to the starter motor once the immobilizer detects that the starter motor has been engaged. The present battery can be connected to an automobile system using only standard electrical connections between the automobile electrical system and the battery and further does not require any connection between the immobilizer circuit and the user keypad.
REFERENCES:
patent: 4553127 (1985-11-01), Issa
patent: 5023591 (1991-06-01), Edwards
patent: 5397925 (1995-03-01), Carlo et al.
patent: 5404129 (1995-04-01), Novak et al.
patent: 5449957 (1995-09-01), Carlo
patent: 5498486 (1996-03-01), Gatehouse
patent: 5552642 (1996-09-01), Dougherty et al.
patent: 5729192 (1998-03-01), Badger
Letter to Wragge & Co. from Gartside, Harding & Davies dated Jul. 14, 1998, 2 pgs.
Peter Gatehouse Letter to Exide Corporation, May 3, 1998, 2 pgs.
Diagram of Compuguard, 2 pages.
"The New Tudor Intelligent Battery," the Tudor Group Intelligent Battery Advertisement, 1 page.
Peter Gatehouse Letter dated May 10, 1999 w/attachments (7 pages).
Exide Batteries Ltd.
Shin K.
Wong Peter S.
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