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:
Dec. 03, 2013
Filed:
Jun. 17, 2010
Atsushi Ogawa, Nagoya, JP;
Atsushi Ogawa, Nagoya, JP;
Toyota Jidosha Kabushiki Kaisha, Aichi, JP;
Abstract
An electrical shock absorberof the present embodiment includes a motor, which is rotated by approaching and separating motions between sprung and unsprung members which approach and separate from each other; and an electric circuit, which connects the electric terminals of the motorso as to cause current to flow through the motor. The electric circuitincludes P-channel JFETs. The gate of the P-channel JFETis connected to one electric terminal of the motor, and the source of the P-channel JFETis connected to the other electric terminal of the motor. Therefore, the induced voltage is applied to the gate. The induced voltage represents the stroke speed of the electrical shock absorber. Therefore, the gate voltage VGS is changed on the basis of the above-mentioned relative speed such that the gate voltage VGS increases with the stroke speed of the electrical shock absorber. By means of changing the gate voltage VGS in this manner, the magnitude of the induced current flowing through the electric circuitis limited by the P-channel JFETson the basis of the characteristic of the P-channel JFETin terms of change of drain-source current iDS with the gate voltage VGS.