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:
Jun. 11, 2002
Filed:
Jun. 30, 2000
Masaru Ito, Hitachinaka, JP;
Shinichi Fujino, Mito, JP;
Hisaya Shimizu, Hitachinaka, JP;
Yoshinori Fukasaku, Hitachinaka, JP;
Masahiro Hiruta, Hitachinaka, JP;
Takashi Yokoyama, Hitachinaka, JP;
Other;
Abstract
In an electric throttle-control apparatus for controlling an open position of a throttle valve connected to reduction gears to reduce rotational speed of the motor , by driving a motor which includes a commutator with a plurality of slots , and brushes and ′, the number of the slots in the commutator and the arrangement of brushes on the slots are set such that even and odd number slot states appear alternately in an electrical equivalent-circuit of a wire-connection among slots including the brushes while the motor rotates. Further, if the number of the slots is the odd number , or , the brushes and ′ are arranged in a 180° opposed placement, and if the number of the slots is the even number or , the brushes and ′ are arranged in a non-opposed placement shifted from a 180° opposed placement.