Patents by Inventor Wilhelm Lupold

Wilhelm Lupold 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).

  • Hydraulic device in accordance with the features of the preamble of patent claim
    Publication number: 20060021342
    Abstract: The invention relates to a hydraulic device (1), with a piston that moves inside a cylinder; a pump piston guided in a pump cylinder; a tank chamber for a hydraulic medium; and two valve units. The invention is based on the problem of proposing a functionally improved and more cost-effective hydraulic device (1). This problem is solved in that the piston (3), the pump cylinder (9), and the tank compartment (11, 12, 13, 14) are formed in each case by at least one compartment (3, 9, 11, 12, 13, 14) belonging to a profile tube (3).
    Type: Application
    Filed: August 1, 2005
    Publication date: February 2, 2006
    Inventor: Wilhelm Lupold
  • Lifting apparatus
    Patent number: D636141
    Type: Grant
    Filed: September 2, 2008
    Date of Patent: April 12, 2011
    Assignee: Andreas Lupold Hydrotechnik GmbH
    Inventor: Wilhelm Lupold