Patents by Inventor Ronald H. Renshaw

Ronald H. Renshaw 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).

  • Patent number: 6926261
    Abstract: A trailer tongue jack includes a grease (or zerk) fitting for providing grease to internal parts The jack includes an outer tube and an inner telescoping tube. A threaded insert (or nut) is fixedly attached inside an upper end of the inner telescoping tube. A screw shaft threadedly cooperates with the insert to extend or retract the inner telescoping tube from a lower end of the outer tube. A crank is provided to turn the screw shaft either directly or through gears, and a thrust bearing carries a vertical load between the screw shaft and the outer tube. The grease fitting allows the internal parts, and the thrust bearing in particular, to be easily lubricated.
    Type: Grant
    Filed: July 26, 2004
    Date of Patent: August 9, 2005
    Assignee: Kaper II, Inc.
    Inventor: Ronald H. Renshaw
  • Patent number: D668372
    Type: Grant
    Filed: June 2, 2011
    Date of Patent: October 2, 2012
    Assignee: Kaper II, Inc.
    Inventors: Ronald H. Renshaw, Kenneth J. Courian
  • Patent number: D670416
    Type: Grant
    Filed: August 23, 2010
    Date of Patent: November 6, 2012
    Assignee: Kaper II, Inc.
    Inventor: Ronald H. Renshaw