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:
Aug. 28, 2018
Filed:
Jan. 12, 2017
Xerex Ab, Taby, SE;
Gustaf Wigren, Vaxholm, SE;
Peter Engborg, Skogas, SE;
Piab Aktiebolag, Täby, SE;
Abstract
A controller for controlling a vacuum generator in a vacuum system for transportation of objects, which vacuum system comprises a vacuum generator driven by a compressed air flow via a first on/off valve, to supply vacuum to a vacuum gripper, the vacuum system comprises a second valve arranged to supply compressed air into the vacuum system; a pressure sensor for monitoring a system-pressure inside a vacuum chamber; and the controller that is arranged to communicate with the first on/off valve, the second valve and the pressure sensor; and when the on/off valve is not flowing air to the vacuum generator, and the controller indicates a state of no vacuum generation, and if a fluctuation from a pressure-equilibrium to a negative time-derivative of the system-pressure is detected, the controller is arranged to activate the second valve, allowing compressed air to flow into the vacuum-chamber for compensation to re-establish the pressure-equilibrium.