Patents by Inventor Jeremy Marcus

Jeremy Marcus 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).

  • Air circulation ports in rotary rock bit journal bearing
    Patent number: 8337085
    Abstract: A thrust bearing system for a roller cone rock bit includes at least one roller cone disposed on a leg having an air channel therethrough, the thrust bearing system including a primary thrust bearing surface on the leg configured to contact a corresponding primary bearing surface on the roller cone, wherein the primary thrust bearing surface on the leg includes at least one air circulation port in fluid communication with the air channel.
    Type: Grant
    Filed: May 6, 2009
    Date of Patent: December 25, 2012
    Assignee: Sandvik Intellectual Property AB
    Inventors: Mahavir Nagaraj, Jeremy Marcus, Vincent Wayne Shotton, Sameer Bhoite
  • AIR CIRCULATION PORTS IN ROTARY ROCK BIT JOURNAL BEARING
    Publication number: 20100284636
    Abstract: A thrust bearing system for a roller cone rock bit includes at least one roller cone disposed on a leg having an air channel therethrough, the thrust bearing system including a primary thrust bearing surface on the leg configured to contact a corresponding primary bearing surface on the roller cone, wherein the primary thrust bearing surface on the leg includes at least one air circulation port in fluid communication with the air channel.
    Type: Application
    Filed: May 6, 2009
    Publication date: November 11, 2010
    Applicant: Sandvik Mining and Construction
    Inventors: Mahavir Nagaraj, Jeremy Marcus, Vincent Wayne Shotton, Sameer Bhoite