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:
May. 02, 2006
Filed:
Jun. 27, 2003
Satoru Onozawa, Anjo, JP;
Takashi Kikuta, Kariya, JP;
Tsutomu Tanoi, Kariya, JP;
Aisin Seiki Kabushiki Kaisha, Kariya, JP;
Abstract
A trapping detection device of an opening/closing member includes a motor, a motor speed detection device, a control device, a voltage detection device for detecting a drive voltage applied to the motor, an actual speed decision device for deciding the actual speed of a rotation of the motor, an estimated speed calculation device for calculating the estimated speed of the rotation of the motor based on the drive voltage, an estimated speed storage device for storing the estimated speed for a predetermined time, an estimated speed correction device for correcting the estimated speed based on a difference between the actual speed and the estimated speed obtained before the predetermined time, a trapping determination device for determining the trapping based on a change state of a difference between the estimated speed being corrected and the actual speed.