Patents by Inventor Gerd Roth

Gerd Roth 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: 4086313
    Abstract: In manufacturing pressed boards, a flowable mixture of thermosetting resinous material and filler is blown through one or more nozzles into a converging throat formed by a pair of relatively inclined perforated conveyor bands in which the mixture is compacted into a continuous, coherent but preferably still pliable web by the application of heat to preset the resinous material thereof. The web may be immediately converted into a rigid board by being led, without intermediate cooling, into a continuously working press for final condensation of the resin; on the way to that press it may be subjected to a finishing operation, as by adhesion of preheated strips of paper or other coverings to its still tacky surfaces.
    Type: Grant
    Filed: December 13, 1974
    Date of Patent: April 25, 1978
    Assignee: G. Siempelkamp & Co.
    Inventors: Heinrich Axer, Gerd Roth
  • Patent number: 4047865
    Abstract: In manufacturing pressed boards, a flowable mixture of thermosetting resinous material and filler is blown through one or more nozzles into a converging throat formed by a pair of relatively inclined perforated conveyor bands in which the mixture is compacted into a continuous, coherent and self-supporting web by the application of heat to preset the resinous material thereof. The web is transversely cut into individually manipulable sections which are fed by a stack conveyor to a platen press, operating in step with the feeding and cutting mechanisms, for final setting of the resin.
    Type: Grant
    Filed: October 20, 1975
    Date of Patent: September 13, 1977
    Assignee: G. Siempelkamp & Co.
    Inventors: Heinrich Axer, Gerd Roth