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. 23, 2014
Filed:
May. 11, 2010
Atsushi Ogawa, Nagoya, JP;
Taisuke Hayashi, Toyota, JP;
Atsushi Ogawa, Nagoya, JP;
Taisuke Hayashi, Toyota, JP;
Toyota Jidosha Kabushiki Kaisha, Aichi-ken, JP;
Abstract
A suspension apparatusincludes an electric shock absorberhaving a motorand a ball screw mechanism, an electric circuit, an inverting amplification circuit, and an inertia compensation capacitor Cp. The electric circuitelectrically connects the two electricity supply terminals of the motor. The inverting amplification circuitis connected to the electric circuit. The inertia compensation capacitor Cp is connected to the output terminal O of the inverting amplification circuit. As a result of approaching or separating motion between sprung and unsprung members, not only a generated current but also an inertia corresponding current Iwhich represents an inertial force of a rotation body, such as the ball screw shaftand the rotor of the motor, flows through the motorand the electric circuit. A current Iwhich is antiphase to the inertia corresponding current Iflows through the inertia compensation capacitor Cp. This antiphase current Icancels out the inertia corresponding current I.