Patents by Inventor Keith Coffman

Keith Coffman 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).

  • Apparatus for feeding livestock
    Patent number: 4640229
    Abstract: Apparatus for feeding livestock comprises a pan accessible to the livestock for feeding therefrom, a container for holding a quantity of feed comprising dry powdered feed material and a mixing chamber. A dispensing mechanism dispenses measured increments of the feed to the mixing chamber and a control valve is coupled with a water supply line for dispensing measured increments of water to the mixing chamber. A mixer is selectively operable for mixing the water with the feed to produce a fluid feed mixture for delivery into the pan.
    Type: Grant
    Filed: February 28, 1985
    Date of Patent: February 3, 1987
    Assignee: Chore-Time Equipment, Inc.
    Inventors: Ray E. Swartzendruber, Keith Coffman
  • Base for a pig feeder
    Patent number: D295905
    Type: Grant
    Filed: February 28, 1985
    Date of Patent: May 24, 1988
    Assignee: Chore-Time Equipment, Inc.
    Inventors: Ray E. Swartzendruber, Keith Coffman