Patents by Inventor Gerhard Hild

Gerhard Hild 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).

  • Multi-chamber vacuum installation
    Patent number: 5054748
    Abstract: A multi-chamber vacuum installation includes a charge-changing chamber (5) and a plurality of processing chambers (1, 2, 3, 4) located within the charge-changing chamber. One of the processing chambers (4) also serves as an air lock chamber. The air lock chamber (4) is formed of two parts, and inner part (4a) and an outer part (4b). The inner part is secured to the inside and the outer part is secured to the outside of the charge-changing chamber.
    Type: Grant
    Filed: October 18, 1990
    Date of Patent: October 8, 1991
    Assignee: Arthur Pfeiffer Vakuumtechnik Wetzlar GmbH
    Inventor: Gerhard Hild
  • Apparatus for treating workpieces with hot gases including gas distributing means
    Patent number: 4818223
    Abstract: Apparatus for treating workpieces under the action of hot gases within a chamber in order to achieve as homogeneous a treatment or processing as possible are provided with a valve mechanism whereby the gas is made to flow alternately from one side to the other over objects or workpieces within the chamber, the valve mechanism being especially designed to operate with heated gases and serving to reverse the gas flow.
    Type: Grant
    Filed: June 18, 1987
    Date of Patent: April 4, 1989
    Assignee: Arthur Pfeiffer Vakuumtechnik Wetzlar GmbH
    Inventor: Gerhard Hild