Patents by Inventor Gerd Neff

Gerd Neff 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: 5257722
    Abstract: A device for filling one or more molds with flowable materials. The device includes several storage tanks (1) for the respective individual components, with each storage tank (1) being connected to one or more flow mixers (4) through a pump mechanism (2) and at least one valve mechanism (3), the casting port (5) of which flow mixers is connected to a mold (6). In order to enable both short inlet paths of the individual synthetic resin components and also a precise, uniform supply of the components to the flow mixers (4), the invention provides that the storage tank (1) and the pump mechanism (2) are combined into one structural unit.
    Type: Grant
    Filed: March 23, 1992
    Date of Patent: November 2, 1993
    Assignee: Wilhelm Hedrich Vakuumanlagen GmbH & Co. KG
    Inventors: Gerd Neff, Erhard Haeuser
  • Patent number: 5217146
    Abstract: It is often necessary to manufacture casting masses out of several components which must be homogeneously mixed in a specific ratio. It can thereby happen that such casting masses harden so quickly that they must be processed in the shortest time possible in order not to react with one another or harden already in the mixing area or in the pipelines and thus result in the possible destruction of the device. The components are in the arrangement of the invention each moved by a pump out of the respective storage tanks into a synchronous dosing mechanism which consists of a dosing chamber for each component, from where the respective now dosed amount of each component is moved with the help of a dosing piston into a flow mixer, with the dosing pistons being thereby mechanically connected and operated by a common drive, and the flow mixer moving the now ready casting mass directly into a mold. The mixing ratios can in this manner be well maintained.
    Type: Grant
    Filed: March 23, 1992
    Date of Patent: June 8, 1993
    Assignee: Wilhelm Hedrich Vakumanlagen GmbH & Co. KG
    Inventors: Gerd Neff, Erhard Haeuser