Data processing: vehicles – navigation – and relative location – Vehicle control – guidance – operation – or indication – Vehicle subsystem or accessory control
Reexamination Certificate
2005-06-14
2005-06-14
Black, Thomas G. (Department: 3663)
Data processing: vehicles, navigation, and relative location
Vehicle control, guidance, operation, or indication
Vehicle subsystem or accessory control
C318S075000, C318S722000, C318S790000, C318S812000, C318S280000, C180S446000
Reexamination Certificate
active
06907334
ABSTRACT:
An electric power steering apparatus for assisting the steering force of a steering member by an electric motor (18) driven by a driving circuit (13) connected to a power supply (P) by power connecting means (15a). The electric power steering apparatus comprising: means (12) for detecting a short-circuit failure on the driving circuit (13) and on a wiring connecting the driving circuit (13) and the electric motor (18); power off means (15) for turning off the power connecting means (15a) when a short circuit failure is detected; current detecting means (17) for detecting the value of a current flowing between the electric motor (18) and the driving circuit (13) after the power off means (15) turns off the power connecting means (15a); and current cutting means (Fa, Fb) for, when the current detecting means (17) detects a current value exceeding a predetermined value, irreversibly cutting off the current whose current value exceeds the predetermined. With such a configuration, it is possible to realize an electric power steering apparatus that has simple structures to enable a reduction in the cost of parts, and prevents the force required for steering from becoming too large at occurring of a short-circuit failure.
REFERENCES:
patent: 4765426 (1988-08-01), Shimizu
patent: 5969919 (1999-10-01), Kobayashi et al.
patent: 6064172 (2000-05-01), Kuznetsov
patent: 6439336 (2002-08-01), Noro et al.
patent: 6497303 (2002-12-01), Nishimura et al.
patent: 2002/0070072 (2002-06-01), Sato
patent: 2002/0189893 (2002-12-01), Mukai et al.
patent: 2003/0011334 (2003-01-01), Kifuku
patent: 2003/0052639 (2003-03-01), Tanaka et al.
patent: 2003/0069675 (2003-04-01), Kifuku et al.
patent: 2003/0102181 (2003-06-01), Tokumoto
patent: 198 11 992 (1999-09-01), None
patent: 7-96387 (1995-04-01), None
patent: 7-096387 (1995-10-01), None
patent: 2662315 (1997-06-01), None
patent: 2662315 (1997-06-01), None
patent: 11-250790 (1999-09-01), None
patent: 11-250790 (1999-09-01), None
patent: 2001-43783 (2001-02-01), None
patent: 2001-043783 (2001-02-01), None
Searching PAJ; (Patent Abstracts of Japan); JP 07-096387 (translation of Abstract only).
Searching PAJ; (Patent Abstracts of Japan); JP 11-250790 (translation of Abstract only).
Searching PAJ; (Patent Abstracts of Japan); JP 2001-043783 (translation of Abstract only).
Norito Yasuji
Yoshida Kouya
Black Thomas G.
Darby & Darby
Koyo Seiko Co. Ltd.
To Tuan C
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