Patents by Inventor Hartmut Waffenschmidt

Hartmut Waffenschmidt 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: 5713272
    Abstract: A powder press with mechanical-hydraulic shuttle control including a main press shaft, a control unit mounted on the powder press for converting rotational motion into translational motion, including a first actuator assembly; a second actuator assembly in fluid communication with the first actuator assembly; a shuttle assembly disposed at one end of the second actuator assembly; and a cardan shaft for transferring rotational motion of the main press shaft to the control unit. The control unit includes first and second shafts disposed in spaced relationship to each other; first and second wheels, each mounted on a respective one of the first and second shafts; a member interconnecting the first and second wheels in rotational engagement; and an adjustable cam member mounted on the second shaft and operatively engaging the first actuator assembly such that rotation of the main press shaft rotates the cardan shaft which, in turn, is coupled to the first shaft in the control unit.
    Type: Grant
    Filed: January 30, 1996
    Date of Patent: February 3, 1998
    Assignee: Dorst-Maschinen und Anlagenbay Otto Dorst und Dipl-Lng Walter Schegel GmbH & Co
    Inventors: Hubert Schaidl, Walter Rau, Hartmut Waffenschmidt, Alfred Eisensehr