Patents by Inventor Michael A. Otterby

Michael A. Otterby 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).

  • Hydraulic spool lock and method of use
    Patent number: 6926034
    Abstract: A hydraulic spool lock with a hydraulic spool housing, first and second hydraulic spools mounted within the hydraulic spool housing for independent selective movement with respect to the hydraulic spool housing, and a lock plunger movable mounted to the hydraulic spool housing. The present invention allows independent movement of the spools with respect to the hydraulic spool housing when the hydraulic spool lock is in the unlocked position. The present inventions prevents movement of the spools with respect to the hydraulic spool housing when the hydraulic spool lock is in a locked position.
    Type: Grant
    Filed: January 24, 2003
    Date of Patent: August 9, 2005
    Assignee: Prince Manufacturing Corporation
    Inventor: Michael A. Otterby