Patents by Inventor Gaston Grandmenil

Gaston Grandmenil 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).

  • Scraper arm
    Patent number: 4417652
    Abstract: A scraper arm apparatus for use especially with concrete mixers, including an endless chain provided at spaced apart intervals with scraper members and movable in a vertical plane about a support member, which is fixed to the opening of a hopper which receives aggregate from a pile on the ground level. The upper end of the support member is movable vertically with respect to the fixed hopper.
    Type: Grant
    Filed: May 12, 1980
    Date of Patent: November 29, 1983
    Inventor: Gaston Grandmenil