Patents by Inventor Richard L. Holtz

Richard L. Holtz 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).

  • Rotary sprinkler with reversing mechanism and adapter seal
    Patent number: 5673855
    Abstract: A rotary sprinkler including a sprinkler head, a drive motor and a drive train drivingly coupled to the motor and to the sprinkler head so that the motor can impart rotational movement to the sprinkler head. The drive train includes a shifter drivable between first and second positions for reversing the direction of the rotational output of the drive train. A buckling column spring provides the energy to move the shifter between the first and second positions. A one piece seal is used to provide a plurality of separate annular seals as well as to assist in mounting one or more components of the rotary sprinkler.
    Type: Grant
    Filed: October 16, 1995
    Date of Patent: October 7, 1997
    Assignee: James Hardie Irrigation, Inc.
    Inventors: Jack Thai Nguyen, Tuan Van Le, Richard L. Holtz