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:
Jan. 12, 1993
Filed:
Dec. 18, 1991
Tadashi Terazawa, Toyota, JP;
Tatsuo Kato, Handa, JP;
Mitsuo Kikkawa, Anjo, JP;
Shoichi Doi, Kariya, JP;
Aisin Seiki Kabushiki Kaisha, Kariya, JP;
Abstract
A throttle control apparatus includes an accelerator operation mechanism, a driving source generating driving force in response to at least an operation amount of the accelerator operation mechanism, a throttle shaft fixing a throttle valve of an internal combustion engine thereto and supported on a housing so as to be able to rotate, an electromagnetic clutch mechanism being intermittent a connection between the throttle shaft and the driving source and having a dog clutch which transmits the driving force of the driving source to the throttle shaft and a driving control device for controlling the electromagnetic clutch and the driving source and opening and closing the throttle valve. According to this constitution, when the electromagnetic clutch mechanism operates, the driving source is connected with the throttle shaft via the dog clutch and the driving force of the driving source is immediately transmitted to the throttle shaft. Therefore, it is able to obtain a good response performance and it is able to improve the durability. Furthermore, the electromagnetic clutch mechanism may be provided with an electromagnetic coil, a rotor and a movable member. In this case, when the throttle control apparatus is constituted so as to transmit the driving source via outer teeth which are connected with the driving source and which are formed on outer circumferential edge portion of the rotor and the nail portions which are formed on the rotor and the movable member adjacent to the outer teeth, the throttle control apparatus can be made lighter and smaller.