Patents by Inventor Janice David

Janice David 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).

  • Earth bit with hub and thrust units
    Patent number: 7798254
    Abstract: An earth bit includes a cone rotatably mounted to a shaft with a hub unit and thrust roller bearings. The hub unit is moveable between mounted and unmounted positions on the shaft, as a single unit, in a repeatable manner. The hub unit includes a pair of roller bearings positioned between inner and outer races. The outer race includes a recess extending around its outer periphery. A sealing structure is slidingly engaged with the recess to provide a seal between the cone and shaft.
    Type: Grant
    Filed: January 3, 2008
    Date of Patent: September 21, 2010
    Assignees: Atlas Copco Secoroc LLC, SKF USA Inc.
    Inventors: Gregory W. Peterson, Anthony D. Podnieks, Tim Chu, Elisabeth Smith, Janice David
  • EARTH BIT WITH HUB AND THRUST UNITS
    Publication number: 20090173546
    Abstract: An earth bit includes a cone rotatably mounted to a shaft with a hub unit and thrust roller bearings. The hub unit is moveable between mounted and unmounted positions on the shaft, as a single unit, in a repeatable manner. The hub unit includes a pair of roller bearings positioned between inner and outer races. The outer race includes a recess extending around its outer periphery. A sealing structure is slidingly engaged with the recess to provide a seal between the cone and shaft.
    Type: Application
    Filed: January 3, 2008
    Publication date: July 9, 2009
    Applicants: ATLAS COPCO SECOROC LLC, SKF USA, INC.
    Inventors: Gregory Wayne Peterson, Anthony D. Podnieks, Tim Chu, Elisabeth Smith, Janice David