Patents by Inventor Brian Douglas Hawthorne

Brian Douglas Hawthorne 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).

  • Seal arrangement for a high speed spindle with through the spindle cooling
    Patent number: 8956093
    Abstract: An arrangement for sealing a pressurized coolant system for a drawbar cylinder rod and a spindle drawbar in a machine tool utilizes a stationary mounting plate for supporting a piston plate and a drawbar cylinder rod. A pulley is mounted on the spindle for driving the spindle and a rotary seal that rotates with the spindle is mounted to the spindle. A non-rotating seal is mounted on the mounting plate. A planar sealing surface is formed by the contact between the non-rotating seal and the rotary seal, whereby a reliable fluid seal is formed between the rotating and the non-rotating structures of the pressurized coolant system.
    Type: Grant
    Filed: November 11, 2011
    Date of Patent: February 17, 2015
    Assignee: Mag IAS, LLC
    Inventor: Brian Douglas Hawthorne