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:
Mar. 17, 1987
Filed:
Apr. 03, 1986
Manabu Shiraki, Yamato, JP;
Hiroyuki Amano, Kariya, JP;
Tomoaki Nishimura, Toyoake, JP;
Katsumasa Shimizu, Toyoake, JP;
Aisin Seiki Kabushiki Kaisha, Kariya, JP;
Abstract
An electric motor for controlling the tilt of a throttle valve is disclosed. A rotatable field magnet having at least two pairs of N and S poles is mounted on a rotary shaft carrying the throttle valve for rotation relative to a disk-shaped stator yoke having at least one armature coil formed therearound. The coil includes a first toroidal windings of conductor effective for the development of torque wound in one direction and a second toroidal windings of conductor similarly effective for the development of torque wound in the other direction and disposed away from said first toroidal windings of conductor circumferentially of the stator yoke at an angular interval which is equal to about 2n-1 times the pole-to-pole interval of said magnet, said first and second windings being electrically connected to each other. The first and second windings of conductor are phase shifted in spaced-apart relation to each other. Further, a spring is provided which act to urge the rotatable shaft in the direction which will cause the throttle valve to tilt to its 'closed' position.