Patents by Inventor Paul Smallidge

Paul Smallidge 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).

  • Double-crowned valve seat insert having seating surface formed of hard-facing material
    Patent number: 10989321
    Abstract: A valve seat insert for a gas exchange valve controlling gas exchange of a cylinder includes an insert body having an inner peripheral surface, an outer peripheral surface, and a valve seating surface structured to contact the gas exchange valve at a closed position and profiled to limit valve recession thereof. The valve seating surface includes an arrangement of linear segments and curved segments forming crowns to contact the gas exchange valve at different wear states. The valve seat insert further includes a base material, and a hard-facing material metallurgically bonded to the base material and forming the valve seating surface.
    Type: Grant
    Filed: April 26, 2019
    Date of Patent: April 27, 2021
    Assignee: Caterpillar Inc.
    Inventors: Ashwin A Hattiangadi, Rong Qu, Paul Smallidge, Karen Snelling, Pay Broderson
  • DOUBLE-CROWNED VALVE SEAT INSERT HAVING SEATING SURFACE FORMED OF HARD-FACING MATERIAL
    Publication number: 20200340593
    Abstract: A valve seat insert for a gas exchange valve controlling gas exchange of a cylinder includes an insert body having an inner peripheral surface, an outer peripheral surface, and a valve seating surface structured to contact the gas exchange valve at a closed position and profiled to limit valve recession thereof. The valve seating surface includes an arrangement of linear segments and curved segments forming crowns to contact the gas exchange valve at different wear states. The valve seat insert further includes a base material, and a hard-facing material metallurgically bonded to the base material and forming the valve seating surface.
    Type: Application
    Filed: April 26, 2019
    Publication date: October 29, 2020
    Applicant: Caterpillar Inc.
    Inventors: Ashwin A Hattiangadi, Rong Qu, Paul Smallidge, Karen Snelling, Pay Broderson