Patents by Inventor Donald MacKinnon Davis

Donald MacKinnon Davis 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: 3943028
    Abstract: Apparatus and process for manufacturing non-woven textile pile fabric from a plurality of pile-forming strands having thermoplastic characteristics, as follows. A hollow strand extruder receives parallel textile strands therein extending longitudinally therethrough and shapes the strands into a continuous mass of a predetermined configuration for withdrawal therefrom. A plurality of relatively thin spaced-apart successive compartment devices are positioned generally in axial alignment with the extruder and define successive spaced-apart open-sided interior areas of the same general configuration of the shaped mass of strands and collectively define a longitudinally-extending passageway for receiving and holding the continuous mass of strands therein after withdrawal from the extruder.
    Type: Grant
    Filed: June 3, 1974
    Date of Patent: March 9, 1976
    Inventor: Donald MacKinnon Davis