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:
Feb. 26, 2013
Filed:
Nov. 18, 2008
Ansgar Fries, Munich, DE;
Eduard Hilberer, Hockenheim, DE;
Ansgar Fries, Munich, DE;
Eduard Hilberer, Hockenheim, DE;
KNORR-BREMSE Systeme fuer Nutzfahrzeuge GmbH, Munich, DE;
Abstract
A compressed air supply system for a utility vehicle includes a compressor that can be driven by a drive by a pneumatic clutch, and a valve having a magnetic coil for selectively supplying compressed air to a coupling inlet of the clutch. When the valve is opened or maintained open, a pick-up current flows through the magnetic coil during a first phase, and a holding current weaker than the pick-up current flows through the magnetic coil during a second phase, a driver signal generating the holding current being pulse-width-modulated in the second phase.
Data source: USPTO (United States Patent and Trademark Office) public patent records. Weekly synchronization. How IDiyas builds this profile