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:
Mar. 06, 2007
Filed:
Dec. 05, 2005
Kazuo Itoh, Kasai, JP;
Yoshio Inoue, Hyogo, JP;
Kazuo Itoh, Kasai, JP;
Yoshio Inoue, Hyogo, JP;
Itoh Denki Co., Ltd., Hyogo, JP;
Abstract
A conveyor unit () including a driving roller (), a motor () for powering the driving roller (), and a controller () adapted to adjust the motor () so as to control the driving roller (), the motor () including a permanent magnet and an armature having a plurality of armature coils (), and the controller () having an interrupter () adapted to repeat shunting and deshunting of at least one of the coils () and a rotation detector () adapted to detect an externally forced rotation of the motor () in response to an electromotive force induced in at least one of the coils (), wherein in the case that the motor () is not driven, the controller () maintains operations of the interrupter () and outputs a presence signal by determining conveyance of an article (W) into an area powered by the motor () upon detection of the rotation of the motor () by means of the rotation detector ().