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:
Jan. 04, 2005
Filed:
Jun. 27, 2003
Anton Münzebrock, Dortmund, DE;
Etienne Nitidem, Lemgo, DE;
Jörg Praczyk, Wetter, DE;
Demag Cranes & Components GmbH, Wetter, DE;
Abstract
A control device for overhead conveyors equipped with at least two actuators (), specifically crane and crane trolley drive units, with transmission of control signals and transmission of safety signals from control unit () to actuators () via a signal connection, with a control unit () exhibiting a safety switch unit emitting at least one safety signal, which can be triggered manually in order to shut down at least one actuator (). In order to specify a simple control device ensuring a conveyor's increased operational safety, it is suggested that a signal connection feature serial bi-directional data bus () used for signal transmission between control unit () and actuators (), which are therefore equipped with the pertinent controls (), each operating jointly with a corresponding safety control (), monitoring independently from each other all of the safety signals transmitted via data bus () and emitting at least one shut-down command to at least one of controls (), when at least one predetermined incident has occurred.