Patents by Inventor Christopher K. Littleford

Christopher K. Littleford 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).

  • Piston Assembly for Gyratory Crusher
    Publication number: 20120260798
    Abstract: A piston assembly for a gyratory crusher that contains designed wear parts comprising an upper piston bushing, a lower piston bushing, a piston wear ring and a hydraulic seal.
    Type: Application
    Filed: October 10, 2011
    Publication date: October 18, 2012
    Applicant: FLSMIDTH A/S
    Inventors: Mark Solomon, Christopher K. Littleford
  • Top service gyratory crusher
    Patent number: 8033491
    Abstract: The apparatus is a gyratory crusher in which all the wear parts can be removed and replaced from the top of the crusher, thus eliminating the need to remove large, heavy parts from below the crusher. This is accomplished by constructing the crusher so that the eccentric and the piston assembly can be lifted up and out sequentially. The piston assembly then includes all the wear parts within the lowest assembly, the hydraulic support, so that those parts can be replaced without access to the underside of the crusher. If necessary, the hydraulic support within which the piston assembly is held can also be removed from above the crusher.
    Type: Grant
    Filed: May 22, 2008
    Date of Patent: October 11, 2011
    Assignee: FLSmidth A/S
    Inventors: Mark Solomon, Christopher K. Littleford
  • Top Service gyratory crusher
    Publication number: 20090289135
    Abstract: The apparatus is a gyratory crusher in which all the wear parts can be removed and replaced from the top of the crusher, thus eliminating the need to remove large, heavy parts from below the crusher. This is accomplished by constructing the crusher so that the eccentric and the piston assembly can be lifted up and out sequentially. The piston assembly then includes all the wear parts within the lowest assembly, the hydraulic support, so that those parts can be replaced without access to the underside of the crusher. If necessary, the hydraulic support within which the piston assembly is held can also be removed from above the crusher.
    Type: Application
    Filed: May 22, 2008
    Publication date: November 26, 2009
    Inventors: Mark Solomon, Christopher K. Littleford