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:
Oct. 01, 1991
Filed:
Dec. 21, 1989
Hikaru Kikuta, Obu, JP;
Koichi Mine, Obu, JP;
Kazumichi Hanai, Obu, JP;
Kingo Kamiya, Obu, JP;
Hitoshi Takeuchi, Obu, JP;
Aisan Kogyo Kabushiki Kaisha, Obu, JP;
Abstract
A motor-driven fuel pump including a brushless motor; a motor housing for enclosing the brushless motor; and a pump section adapted to be driven by the brushless motor for sucking a fuel and pumping the same into the motor housing. The brushless motor includes a stator fixed to an inner circumference of the motor housing; a rotor assembly adapted to be rotated by supplying current to the stator, which rotor assembly includes a motor shaft, a rotor mounted to the motor shaft a rotor cover mounted to one end of the rotor magnet on the side of the pump section, a timing rotor mounted to the other end of the rotor magnet, and a sensor magnet mounted to an end of the timing rotor on the side opposite to the rotor magnet; an end cover mounted at an inlet end of the brushless motor; a motor shaft bearing mounted in the end cover for rotatably supporting the motor shaft; and a timing rotor bearing interposed between an outer circumference of the timing rotor and the inner circumference of the motor housing for rotatably supporting the timing rotor.