Patents by Inventor STEVEN MURRAY SHAFFER

STEVEN MURRAY SHAFFER 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).

  • Wethead seal design for continuous mining machine
    Patent number: 8967730
    Abstract: A continuous mining machine may include a stationary boom member, a stationary gear and bearing housing attached to the boom member, and a cutter drum assembly rotatably mounted on the stationary gear and bearing housing. Cutting elements and spray nozzles may be mounted on the rotatable cutter drum assembly. The spray nozzles may be configured to direct liquid spray at a mine face as mine material is dislodged by rotation of the cutter drum assembly and contact of the cutting elements with the mine face. Stationary liquid passageways may be provided through the gear and bearing housing, and rotatable liquid passageways may be provided through the rotatable cutter drum assembly and configured to convey liquid to the spray nozzles.
    Type: Grant
    Filed: July 1, 2013
    Date of Patent: March 3, 2015
    Assignee: Caterpillar Global Mining America LLC
    Inventors: Darren Brent Antoine, Todd William Wampler, Roger Lee O'Quinn, Estel Owens, Steven Murray Shaffer
  • WETHEAD SEAL DESIGN FOR CONTINUOUS MINING MACHINE
    Publication number: 20150001912
    Abstract: A continuous mining machine may include a stationary boom member, a stationary gear and bearing housing attached to the boom member, and a cutter drum assembly rotatably mounted on the stationary gear and bearing housing. Cutting elements and spray nozzles may be mounted on the rotatable cutter drum assembly. The spray nozzles may be configured to direct liquid spray at a mine face as mine material is dislodged by rotation of the cutter drum assembly and contact of the cutting elements with the mine face. Stationary liquid passageways may be provided through the gear and bearing housing, and rotatable liquid passageways may be provided through the rotatable cutter drum assembly and configured to convey liquid to the spray nozzles.
    Type: Application
    Filed: July 1, 2013
    Publication date: January 1, 2015
    Applicant: Caterpillar Global Mining America, LLC
    Inventors: DARREN BRENT ANTOINE, TODD WILLIAM WAMPLER, ROGER LEE O'QUINN, ESTEL OWENS, STEVEN MURRAY SHAFFER