Patents by Inventor Manfred Schafer

Manfred Schafer 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).

  • Temperature controllable heater plate for molds
    Patent number: 4208574
    Abstract: A heater plate for plunger-type molding presses comprises a plurality of electrically heated heating elements which are inserted into holes through the plate. These holes are disposed in rows parallel to the peripheral outline of the plate so that the density of the heating elements decreases toward the center of the plate. The heating elements are interconnected and also connected to a temperature control device so that the heating elements can be selectively heated whereby the plate can be uniformly heated in spite of higher heat loss at marginal portions of the plate.
    Type: Grant
    Filed: March 10, 1978
    Date of Patent: June 17, 1980
    Assignee: Werner & Pfleiderer
    Inventor: Manfred Schafer