Patents by Inventor Walter Ray Marks

Walter Ray Marks 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).

  • Spider having spider arms with open channel
    Patent number: 8070084
    Abstract: A spider for use with a gyratory crusher. The spider includes spider arms each formed from two spaced flanges joined by a connecting web to define an open channel having an open top end. The configuration of the spider arms increases manufacturability and provides the required strength and rigidity for the spider. The channel formed in each spider arm is covered by a spider arm shield to reduce abrasive wear to the spider arm.
    Type: Grant
    Filed: February 5, 2010
    Date of Patent: December 6, 2011
    Assignee: Metso Minerals Industries, Inc.
    Inventors: David Francis Biggin, Walter Ray Marks
  • SPIDER HAVING SPIDER ARMS WITH OPEN CHANNEL
    Publication number: 20110192927
    Abstract: A spider for use with a gyratory crusher. The spider includes spider arms each formed from two spaced flanges joined by a connecting web to define an open channel having an open top end. The configuration of the spider arms increases manufacturability and provides the required strength and rigidity for the spider. The channel formed in each spider arm is covered by a spider arm shield to reduce abrasive wear to the spider arm.
    Type: Application
    Filed: February 5, 2010
    Publication date: August 11, 2011
    Applicant: METSO MINERALS INDUSTRIES, INC.
    Inventors: David Francis Biggin, Walter Ray Marks