Patents by Inventor James A. Threadgill

James A. Threadgill 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).

  • Tap lubricating system
    Patent number: 4708539
    Abstract: A self-contained system for applying a viscous tapping fluid to a tapping tool at a machining work site independent of any other cutting fluid system. A supply tank, control cabinet and an air actuating nozzle are interconnected to supply the tapping fluid for a timed period initiated by a limit switch, NC signal or manual command for ready adaptation to equipment ranging from a machining center to dedicated tapping work stations.
    Type: Grant
    Filed: November 22, 1985
    Date of Patent: November 24, 1987
    Assignee: Master Chemical Corporation
    Inventor: James A. Threadgill
  • Liquid separator
    Patent number: 4652372
    Abstract: A liquid separator utilizing an endless belt for skimming extraction of oil from a liquid body and doctoring rollers for gathering the oil from both sides of the belt.
    Type: Grant
    Filed: April 8, 1985
    Date of Patent: March 24, 1987
    Assignee: Master Chemical Corporation
    Inventor: James A. Threadgill