Patents by Inventor Art J. Lallo

Art J. Lallo 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: 5248242
    Abstract: A rotor blade, whose principal structural components are of fiber-reinforced composite material, includes a spar, fairing skins, spar wraps, splices and doublers in the precured condition cut from rolls of raw stock into flat sheets having the dimensions of the components in the assembled position and laid one laminate upon another laminate to the desired thickness dimension. A noseblock and trailing edge block are precompacted and formed to desired shapes and sizes in the precured condition. A honeycomb core, formed to the contour of the trailing portion of an airfoil behind the spar, is prepared. Molding tools, one tool having the contour of the upper blade surface and another tool having the contour of the lower blade surface, each tool adapted for assembly together so that their inner surfaces envelop the outer blade surface, are formed and adapted to receive the components of the blade therein.
    Type: Grant
    Filed: September 28, 1990
    Date of Patent: September 28, 1993
    Assignee: The Boeing Company
    Inventors: Art J. Lallo, Peter G. C. Dixon