Patents by Inventor Franz Lukas

Franz Lukas has filed for patents to protect the following inventions. This listing includes patent applications that are pending as well as patents that have already been granted by the United States Patent and Trademark Office (USPTO).

  • Circuit arrangement for a photovoltaic inverter for break relief using short-circuit switches, and uses of the circuit arrangement
    Patent number: 10298017
    Abstract: A circuit arrangement for a photovoltaic inverter includes two bus lines, input terminals for connecting at least one photovoltaic generator to the bus lines, respectively, and at least one DC/AC converter connected to the bus lines. The circuit arrangement further includes a disconnector between each DC/AC converter and the bus lines, respectively, and at least one short-circuit path for short-circuiting a voltage between the bus lines, wherein a short-circuit switch is arranged in the short-circuit path, wherein the at least one short-circuit path runs between the bus lines upstream of all disconnectors between the input terminals and the disconnectors, and wherein the short-circuit switch in the at least one short-circuit path between the bus lines is connected in series with a fuse.
    Type: Grant
    Filed: March 17, 2016
    Date of Patent: May 21, 2019
    Assignee: SMA Solar Technology AG
    Inventors: Andreas Falk, Franz Lukas
  • CIRCUIT ARRANGEMENT FOR A PHOTOVOLTAIC INVERTER FOR BREAK RELIEF USING SHORT-CIRCUIT SWITCHES, AND USES OF THE CIRCUIT ARRANGEMENT
    Publication number: 20160226256
    Abstract: A circuit arrangement for a photovoltaic inverter includes two bus lines, input terminals for connecting at least one photovoltaic generator to the bus lines, respectively, and at least one DC/AC converter connected to the bus lines. The circuit arrangement further includes a disconnector between each DC/AC converter and the bus lines, respectively, and at least one short-circuit path for short-circuiting a voltage between the bus lines, wherein a short-circuit switch is arranged in the short-circuit path, wherein the at least one short-circuit path runs between the bus lines upstream of all disconnectors between the input terminals and the disconnectors, and wherein the short-circuit switch in the at least one short-circuit path between the bus lines is connected in series with a fuse.
    Type: Application
    Filed: March 17, 2016
    Publication date: August 4, 2016
    Inventors: Andreas Falk, Franz Lukas
  • Device and method for supplying lubricating oil
    Patent number: 8230975
    Abstract: The invention relates to a device for feeding lubricating oil to an internal combustion engine. This device comprises a lubricating oil pump and an oil pressure regulating apparatus. The lubricating oil pump is designed as a reciprocating piston valve pump and the oil pressure regulating apparatus is designed as a multistage oil pressure regulating apparatus.
    Type: Grant
    Filed: February 11, 2006
    Date of Patent: July 31, 2012
    Assignee: Audi AG
    Inventors: Franz Lukas, Volker Verhees, Dieter Böhm
  • Device and Method for Supplying Lubricating Oil
    Publication number: 20080257648
    Abstract: The invention relates to a device for feeding lubricating oil to an internal combustion engine. This device comprises a lubricating oil pump and an oil pressure regulating apparatus. The lubricating oil pump is designed as a reciprocating piston valve pump and the oil pressure regulating apparatus is designed as a multistage oil pressure regulating apparatus.
    Type: Application
    Filed: February 11, 2006
    Publication date: October 23, 2008
    Applicant: Audi AG
    Inventors: Franz Lukas, Volker Verhees, Dieter Bohm