Transmission-ratio-varying steering apparatus

Details Transmission-ratio-varying steering apparatus Transmission-ratio-varying steering apparatus

2006-08-08

2006-08-08

Morris, Lesley D. (Department: 3611)

Motor vehicles

Steering gear

With electric power assist

C180S444000, C180S446000, C180S402000, C701S041000

Reexamination Certificate

active

07086495

ABSTRACT:
A transmission-ratio-varying steering apparatus has a control circuit capable of storing a rotation angle between input and output shafts in a non-volatile memory when the generator outputs a surge voltage. The transmission-ratio-varying steering apparatus includes clamp means provided between a battery and generator on one side and a power-supply circuit on the other side. The clamp means clamps a surge voltage generated by the generator to a third predetermined voltage higher than a first predetermined voltage but lower than a second predetermined voltage. If a surge voltage higher than the second predetermined voltage is generated by the generator, a self-protection function of the power-supply circuit can be prevented from cutting off power being supplied to a microcomputer and an EEPROM.

REFERENCES:
patent: 5798634 (1998-08-01), Terada et al.
patent: 6868933 (2005-03-01), Kameya
patent: 6915194 (2005-07-01), Kodama et al.
patent: 6922621 (2005-07-01), Kodama et al.
patent: A-2000-351383 (2000-12-01), None

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