Patents by Inventor Ethridge E. Hardesty

Ethridge E. Hardesty 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: 3966533
    Abstract: An apparatus and a method for fabricating on-site storage structures with reinforced composite materials, as well as the storage structures produced in accordance with the apparatus and method. In one aspect of the invention, reinforcing material which comprises at least one layer of fiber containing strand material, and one or more layers of fiber containing mat material are resin impregnated and passed through a draw-die orifice. Upon passing through the draw-die orifice this material is deposited in a continuously formed spiral where the turns forming the spiral are registered with each other. A cure of the resin material is initiated as the impregnated reinforcing material passes through the draw-die orifice. The cure is initiated by means of a curing device which applies dielectric energy to the impregnated reinforcing material, to thereby form a rigid spiral turn which becomes bonded to the next adjacent registered layer.
    Type: Grant
    Filed: September 19, 1973
    Date of Patent: June 29, 1976
    Assignee: Goldsworthy Engineering, Inc.
    Inventors: William Brandt Goldsworthy, Ethridge E. Hardesty
  • Patent number: 3957410
    Abstract: Reinforced plastic pipe and similar tubular members are formed by centrifugally casting filamentary strand materials, such as glass roving, in a rotating cylindrical mold. A solvent dispersed mold release agent may be sprayed into the mold prior to the application of the filament. Thereafter, a spray of catalyzed binder resin is added to the filamentary material. A lance is extended into the mold and contains feeding tubes for depositing the filamentary strand, as well as nozzles for depositing the resin on the surface of the mold. Also, the lance contains extra nozzles for the addition of particulate matter such as sand to achieve desired structural quality and economic fabrication of the tubular member. The amount of the components added and the timing of the component addition is determined by the desired end product to be achieved.
    Type: Grant
    Filed: April 14, 1972
    Date of Patent: May 18, 1976
    Assignee: Goldsworthy Engineering, Inc.
    Inventors: William B. Goldsworthy, Ethridge E. Hardesty