Patents by Inventor Andreas Maerk

Andreas Maerk 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).

  • Patent number: 8177190
    Abstract: A vacuum valve including a valve body with a valve orifice, a closure member for closing the valve orifice, a first piston-cylinder unit, a second piston-cylinder unit, a first control element, and a second control element. When opening the vacuum valve, a pressure medium line, which applies pressure to the opening cylinder space of the second piston-cylinder unit, is blocked during the first part of the opening process, and is released at the end of the first part of the opening process by the first control element. When closing the vacuum valve, a pressure medium line, which applies pressure to the closing cylinder space of the first piston-cylinder unit, is blocked during the first part of the closing process, and is released by the second control element at the end of the first part of the closing process.
    Type: Grant
    Filed: October 9, 2009
    Date of Patent: May 15, 2012
    Assignee: VAT Holding AG
    Inventor: Andreas Maerk
  • Publication number: 20100090145
    Abstract: A vacuum valve including a valve body with a valve orifice, a closure member for closing the valve orifice, a first piston-cylinder unit, a second piston-cylinder unit, a first control element, and a second control element. When opening the vacuum valve, a pressure medium line, which applies pressure to the opening cylinder space of the second piston-cylinder unit, is blocked during the first part of the opening process, and is released at the end of the first part of the opening process by the first control element. When closing the vacuum valve, a pressure medium line, which applies pressure to the closing cylinder space of the first piston-cylinder unit, is blocked during the first part of the closing process, and is released by the second control element at the end of the first part of the closing process.
    Type: Application
    Filed: October 9, 2009
    Publication date: April 15, 2010
    Inventor: Andreas Maerk