Patents by Inventor John Hoff

John Hoff 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: 5333704
    Abstract: Lubricant is applied to a lubrication point by moving an emitter in a first portion of a movement path through lubricant in a reservoir and then moving the emitter through a second portion of the movement path. The emitter is loaded with lubricant in the first portion of the movement path and is drained from a drain port during the second portion of the movement path. The lubricant drained from the emitter is distributed to the lubrication point. A distribution device may be positioned below the emitter to collect the lubricant drained from the emitter and to distribute the collected lubricant to a lubrication point or position other than a position below the emitter during the second portion of the movement path.
    Type: Grant
    Filed: April 1, 1993
    Date of Patent: August 2, 1994
    Inventor: John Hoff
  • Patent number: 5273611
    Abstract: An apparatus for applying a continuous film to a tube. A carriage allows the apparatus to move axially along the exterior of the tube. A film holder retains and dispenses the continuous film. A mechanism is provided to change the orientation of the film after being dispensed from the film holder. Guide rollers spaced radially and axially about the tube shape the continuous film longitudinally about the circumference of the tube.
    Type: Grant
    Filed: May 4, 1992
    Date of Patent: December 28, 1993
    Assignee: SIG-A-RAP
    Inventors: Brian C. Webb, Donald Hoff, John Hoff