Patents by Inventor Hildegard Schwarz

Hildegard Schwarz 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).

  • Closure device for the discharge opening of an autoclave
    Patent number: 4607767
    Abstract: In an autoclave (1) which can be charged with bulk material and has at its bottom a discharge opening (2) to be closed by means of a cover (4), the cover (4) can be opened inward. For preventing that the bulk material obstructs the opening movement of the cover (4), a closure device (13) is provided to shut off the cross-section of the autoclave, said closure device being opened only after the cover (4) closing the discharge opening (2) has started its opening movement. The preceding closure device (13) comprises downwardly swivellable plates (12).
    Type: Grant
    Filed: March 15, 1984
    Date of Patent: August 26, 1986
    Assignee: Voest-Alpine Aktiengesellschaft
    Inventors: Johann Stadler, Hildegard Schwarz