Toroidal continuously variable transmission control apparatus
Number of patents in Portfolio can not be more than 2000
United States of America Patent
Stats
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Aug 16, 2005
Grant Date -
Dec 11, 2003
app pub date -
May 13, 2003
filing date -
Jun 5, 2002
priority date (Note) -
In Force
status (Latency Note)
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Abstract
In a toroidal continuously variable transmission (TCVT) control apparatus with a variator unit and a ratio control hydraulic system, an electronic TCVT control unit electronically feedback-controls a transmission ratio based on a deviation from a desired transmission ratio, and generates a normal-period command signal to be input to a step motor for compensating for the deviation. The control unit determines whether the deviation can be compensated for by electronically feedback-controlling the transmission ratio based on the deviation and generates an abnormal-period command signal to be input to the step motor to realize a step-motor displacement capable of shifting or diverging the transmission ratio to a speed-reduction side, while keeping a trunnion out of contact with a stopper in the direction of the trunnion axis, when the deviation cannot be compensated for by electronically feedback-controlling the transmission ratio based on the deviation.
First Claim
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Family

- 15 United States
- 10 France
- 8 Japan
- 7 China
- 5 Korea
- 2 Other
Patent Owner(s)
Patent Owner | Address | |
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NISSAN MOTOR CO LTD | YOKOHAMA-SHI KANAGAWA |
International Classification(s)
Inventor(s)
Inventor Name | Address | # of filed Patents | Total Citations |
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Joe, Shinichiro | Kanagawa, JP | 26 | 1292 |
# of filed Patents : 26 Total Citations : 1292 | |||
Kawabe, Taketoshi | Yokohama, JP | 34 | 2009 |
# of filed Patents : 34 Total Citations : 2009 |
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Patent Citation Ranking
- 182 Citation Count
- G06F Class
- 93.55 % this patent is cited more than
- 20 Age
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Maintenance Fees
Fee | Large entity fee | small entity fee | micro entity fee | due date |
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Fee | Large entity fee | small entity fee | micro entity fee |
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Surcharge after expiration - Late payment is unavoidable | $700.00 | $350.00 | $175.00 |
Surcharge after expiration - Late payment is unintentional | $1,640.00 | $820.00 | $410.00 |
Full Text

Legal Events
Date | Code | Event | Description |
---|---|---|---|
Aug 11, 2014 | STCH | INFORMATION ON STATUS: PATENT DISCONTINUATION | free format text: PATENT EXPIRED DUE TO NONPAYMENT OF MAINTENANCE FEES UNDER 37 CFR 1.362 |
Jul 16, 2014 | FP | EXPIRED DUE TO FAILURE TO PAY MAINTENANCE FEE | Effective Date: Jul 16, 2014 |
Jul 16, 2014 | LAPS | LAPSE FOR FAILURE TO PAY MAINTENANCE FEES | |
Feb 21, 2014 | REMI | MAINTENANCE FEE REMINDER MAILED | |
Dec 30, 2009 | FPAY | FEE PAYMENT | year of fee payment: 8 |
Jan 13, 2006 | FPAY | FEE PAYMENT | year of fee payment: 4 |
Jul 16, 2002 | I | Issuance | |
Jan 21, 2000 | F | Filing | |
Jan 11, 2000 | AS | ASSIGNMENT | free format text: ASSIGNMENT OF ASSIGNORS INTEREST;ASSIGNORS:KISHIKI, KIYOSHI;TORIKAI, YUKIO;YAMASHITA, TOSHIHIKO;AND OTHERS;REEL/FRAME:010529/0493 Owner name: NEW JAPAN RADIO CO., LTD, JAPAN Effective Date: Jan 11, 2000 |
Feb 10, 1999 | PD | Priority Date |

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