Patents by Inventor by Richard C. Harwood, executor

by Richard C. Harwood, executor 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).

  • Production of laces and granules of fibre-reinforced thermoplastics
    Patent number: 3940464
    Abstract: A method of producing fibre-reinforced thermoplastic materials in which a plurality of rovings are impregnated with a powdered thermoplastic, the thermoplastic is melted and each impregnated roving is consolidated by passing it through a die which includes the step of contacting all the rovings with a common pool of molten polymer.
    Type: Grant
    Filed: September 27, 1974
    Date of Patent: February 24, 1976
    Assignee: Imperial Chemical Industries Limited
    Inventors: John Howard Davis, deceased, Richard C. Harwood, executor, Barbara Davis, executrix
  • Control of lace production
    Patent number: 3933545
    Abstract: A process for controlling the amount of polymer applied to a lace in which a powdered heat is applied to melt the polymer and the composite is passed through a die to consolidate the product and remove excess polymer, the control being effected by detecting the amount of excess molten polymer and automatically adjusting the polymer input. The process is also suitable for controlling the amount of polymer applied in a process for coating a lace.
    Type: Grant
    Filed: May 29, 1974
    Date of Patent: January 20, 1976
    Assignee: Imperial Chemical Industries Limited
    Inventors: Kenneth Edward Wilkinson, John Howard Davis, deceased, by Richard C. Harwood, executor