Patents by Inventor Erich H. Woltermann

Erich H. Woltermann 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: 4859337
    Abstract: The invention relates to A filter for making portions of coffee or tea, comprising a substantially cup-shaped supporting vessel having a pouring-in opening at the top, a chamber for filling with liquid and having an outlet opening at the bottom, and a filter insert disposed in the supporting vessel above the outlet opening, wherein the filter insert (5) comprises a filter mat and extends approximately parallel to the inner wall of the supporting vessel and its periphery is connected to the supporting vessel (1) in the edge region of the pouring-in opening (2).
    Type: Grant
    Filed: July 10, 1987
    Date of Patent: August 22, 1989
    Inventor: Erich H. Woltermann
  • Patent number: 4662271
    Abstract: A machine for preparing hot beverages such as coffee or tea or the like and comprising a casing having a water vessel, a heating element and a delivery line with spout. The water vessel (6) has a bottom opening (18), which is closable by a valve (19), disposed near a tray (25) receiving a predetermined metered volume and is in other respects closed in airtight fashion, and the maximum filling level (Y--Y) in the tray (25), such level corresponding to said volume, is disposed in the plane of the opening (18), the valve (19) being in the closed state and the heating element (27) heating the said volume.
    Type: Grant
    Filed: October 4, 1985
    Date of Patent: May 5, 1987
    Inventor: Erich H. Woltermann