Patents by Inventor Peter Koeppel

Peter Koeppel 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).

  • ROTOR DEVICE FOR A VACUUM PUMP, AND VACUUM PUMP
    Publication number: 20160290343
    Abstract: A rotor device for a vacuum pump comprises a rotor shaft and at least one rotor element on the rotor shaft. The rotor element contains aluminum, titanium and/or CFRP, while the rotor shaft contains a chromium-nickel steel. This makes it in particular possible to join the at least one rotor element to the rotor shaft at room temperature using a pressing process.
    Type: Application
    Filed: November 5, 2014
    Publication date: October 6, 2016
    Inventors: Markus Henry, Juergen Brezina, Robert Stolle, Peter Koeppel
  • Filters for liquids
    Patent number: 4123228
    Abstract: A filter for liquids and particularly coffee comprises a container having a planar horizontal base formed with at least one filtrate drainage opening, and on its inner face formed with a plurality of radial ribs and a central support member which together support a generally planar filter element of thin sheet material in spaced parallel relationship to the base. In use the arrangement produces a toroidal circulation of liquid which prevents compaction of the filter cake and reduces clogging of the filter element.
    Type: Grant
    Filed: August 15, 1977
    Date of Patent: October 31, 1978
    Assignee: Plaston AG, Kunststoffwerke Hans Frei & Sohne
    Inventors: Roland Frei, Franz Gutmann, Peter Sieber, Peter Koeppel