Patents by Inventor Herbert C. Kroh

Herbert C. Kroh 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: 6253579
    Abstract: A valve hamper assembly for a glassware machine having a camming surface and a movable follower surface engaging the camming surface. A movable valve is operatively connected to the follower surface. A movement device is operatively connected to the follower surface for moving the follower surface along the camming surface to cause movement of the valve.
    Type: Grant
    Filed: March 24, 1999
    Date of Patent: July 3, 2001
    Assignee: Libbey Glass Inc.
    Inventors: Terry E. Hartman, Herbert C. Kroh, David E. Crots
  • Patent number: 6233975
    Abstract: A common cage assembly for a mold for a glassware machine having a mold support member. The assembly further includes a first cage member and a second cage member. Each of the cage members is movably mounted adjacent to the mold support member. Each of the cage members has a mold receiving surface.
    Type: Grant
    Filed: March 24, 1999
    Date of Patent: May 22, 2001
    Assignee: Libbey Glass Inc.
    Inventors: Terry E. Hartman, Herbert C. Kroh, David E. Crots
  • Patent number: 6038889
    Abstract: A cooling system for use with a glassware machine having a plunger, a mold and a valve. The system includes a supply of cooling fluid such as air. The system further includes devices for cooling the plunger, the mold and the valve that are in communication with the supply of fluid.
    Type: Grant
    Filed: April 14, 1999
    Date of Patent: March 21, 2000
    Assignee: Libbey Glass Inc.
    Inventors: Terry E. Hartman, Herbert C. Kroh, David E. Crots
  • Patent number: 5851257
    Abstract: The present invention is directed to an apparatus for pressing a glass article. The apparatus includes a frame. A mold having first and second mold halves are mounted on the frame. The mold halves define a cavity for receiving a glass gob. The mold halves are movable between open and closed positions. The apparatus includes a device for opening and closing the mold halves. A plunger is movably mounted on the frame adjacent the cavity. The plunger presses the glass gob into the cavity to form the glass article. The apparatus further includes a device for moving the plunger. An alternative embodiment of the invention is directed to a machine for pressing a plurality of glass articles at a high cavity rate. In this embodiment, the machine includes at least two apparatus as described above mounted on a device for moving the apparatus.
    Type: Grant
    Filed: June 26, 1996
    Date of Patent: December 22, 1998
    Assignee: Libbey Glass Inc.
    Inventors: Herbert C. Kroh, David E. Crots