The patent badge is an abbreviated version of the USPTO patent document. The patent badge does contain a link to the full patent document.
The patent badge is an abbreviated version of the USPTO patent document. The patent badge covers the following: Patent number, Date patent was issued, Date patent was filed, Title of the patent, Applicant, Inventor, Assignee, Attorney firm, Primary examiner, Assistant examiner, CPCs, and Abstract. The patent badge does contain a link to the full patent document (in Adobe Acrobat format, aka pdf). To download or print any patent click here.
Patent No.:
Date of Patent:
Sep. 26, 1989
Filed:
Dec. 29, 1986
Applicant:
Inventors:
Minoru Takahashi, Kobe, JP;
Jiro Masuda, Kobe, JP;
Akira Miyazaki, Kobe, JP;
Masaki Hitotsuya, Kobe, JP;
Hirofumi Yamasaki, Kobe, JP;
Junji Takahashi, Kobe, JP;
Tatsuo Teratani, Toyota, JP;
Takeshi Tachibana, Toyota, JP;
Masumi Nagasaka, Toyota, JP;
Assignees:
Fijitsu Ten Limited, Hyogo, JP;
Toyota Jidosha Kabushiki Kaisha, Aichi, JP;
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
G05D / ; B60K / ;
U.S. Cl.
CPC ...
36442604 ; 180178 ; 364162 ; 36443107 ;
Abstract
A constant speed cruise control system of duty ratio control type for approximating an actual car speed to a stored target car speed, by on/off control of a control valve of an actuator to adjust the throttle valve opening degree by an output duty ratio D obtained from a control line having a gradient showing a conversion characteristic of car speed and duty ratio. The system has a controller in which