Patents by Inventor Thomas B. Hill

Thomas B. Hill 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).

  • Method of molding resin-impregnated fabric layer using release sheet and absorbent sheet inside evacuated bag
    Patent number: 4062917
    Abstract: Fiber reinforced plastic structural components having curved surface areas are produced in molds utilizing a bleeder cloth comprising a textile-like non-woven polyester fabric characterized by a fiber interlock value of at least 7 and a fiber entanglement completeness of at least 0.5. The utilization of this bleeder cloth allows quicker assembly of the mold components since cutting and forming are not necessary, proper pressure transmittal is ensured, and the air permeability, drape, stretchability, and resin holding capacity of the cloth are ideal. For producing the desired structural components with curved surface areas, at least one layer of resin pre-impregnated partially cured fabric is disposed in cooperation with a first mold section, a release liner is placed on the fabric, and a bleeder cloth according to the invention is placed on the release liner.
    Type: Grant
    Filed: November 5, 1976
    Date of Patent: December 13, 1977
    Assignee: Burlington Industries, Inc.
    Inventors: Thomas B. Hill, Charles Tomasino