Range switchover apparatus for automatic transmission

Number of patents in Portfolio can not be more than 2000

United States of America Patent

PATENT NO 6546348
APP PUB NO 20010005816A1
SERIAL NO

09740055

Stats

ATTORNEY / AGENT: (SPONSORED)

Importance

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Abstract

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A range switchover apparatus includes a range switchover means operating device capable of switching over a switchover means, which switches over a shift range, among respective shift positions, a drive motor for driving the range switchover means operating device, a measuring device for measuring a time, during which the drive motor causes the range switchover means operating device to switch over between predetermined shift positions, a rotation control device for controlling the rotational speed of the drive motor, a correcting device for correcting the rotational speed by the rotation control device so that when a time measured by the measuring device differs from a target time in a predetermined range, the measured time becomes the target time, and a storage device for storing the rotational speed corrected by the correcting device. The range switchover apparatus prevents a change in rotational speed due to long term change from being generated in a motor for driving a switchover means in an automatic transmission.

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First Claim

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Patent Owner(s)

Patent OwnerAddressTotal Patents
AISIN AW CO., LTD.ANJO-SHI1432

International Classification(s)

Inventor(s)

Inventor Name Address # of filed Patents Total Citations
Eishima, Hirotoshi Anjo, JP 4 22
Kusafuka, Muneo Anjo, JP 22 258
Murase, Yoshitaka Anjo, JP 17 228
Ohkoshi, Naoki Anjo, JP 6 52
Takemoto, Kazuo Anjo, JP 23 279

Cited Art Landscape

Patent Info (Count) # Cites Year
 
DENSO CORPORATION (1)
* 6230576 Electrically-driven position changing apparatus 30 1999
 
MAZDA MOTOR CORPORATION (1)
* 5094115 Operation apparatus for vehicle automatic transmission mechanism 25 1991
 
MITSUBISHI DENKI KABUSHIKI KAISHA (1)
* 6141494 DC motor driven power steering system for a motor vehicle 8 1997
 
FIAT AUTO S.P.A. (1)
* 5370015 Electronic device for gear selection in an automatic transmission for motor vehicles with hall effect sensors and manual backup shaft 44 1992
 
NISSAN MOTOR CO., LTD. (1)
* 6157884 Speed ratio control device and control method for automatic transmission 29 1999
 
TOYOTA JIDOSHA KABUSHIKI KAISHA (3)
* 4523281 Automatic transmission controller for automobiles 62 1982
* 4693143 Control device for an automatic transmission system 17 1986
* 4724725 Transmission control system for controlling a main transmission speed changing pattern relative to a subtransmission speed changing ratio 8 1986
 
SMC KABUSHIKI KAISHA (1)
* 5689994 Actuator and actuator system 32 1994
* Cited By Examiner

Patent Citation Ranking

Forward Cite Landscape

Patent Info (Count) # Cites Year
 
AISIN AW CO., LTD. (2)
* 6877390 Shift range changeover mechanism 6 2003
* 2004/0018,907 Shift range changeover mechanism 1 2003
 
NIPPON SOKEN, INC. (2)
* 7835839 Drive-permission apparatus 3 2006
* 2006/0201,768 Drive-permission apparatus 2 2006
* Cited By Examiner