Patents by Inventor Don Keller

Don Keller 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).

  • Exchange based-water treatment
    Patent number: 11008230
    Abstract: A water treatment system comprising an ion exchange vessel, a cationic resin located within the ion exchange vessel, and an anionic resin located within the ion exchange vessel.
    Type: Grant
    Filed: March 11, 2019
    Date of Patent: May 18, 2021
    Inventor: Don Keller
  • EXCHANGE BASED-WATER TREATMENT
    Publication number: 20190202716
    Abstract: A water treatment system comprising an ion exchange vessel, a cationic resin located within the ion exchange vessel, and an anionic resin located within the ion exchange vessel.
    Type: Application
    Filed: March 11, 2019
    Publication date: July 4, 2019
    Inventor: Don Keller
  • EXCHANGE BASED-WATER TREATMENT
    Publication number: 20140197083
    Abstract: A water treatment system comprising an ion exchange vessel, a cationic resin located within the ion exchange vessel, and an anionic resin located within the ion exchange vessel.
    Type: Application
    Filed: January 3, 2014
    Publication date: July 17, 2014
    Inventor: Don Keller
  • Material handling assembly for excavating machines and the like having improved component storage means
    Patent number: 6209237
    Abstract: An assembly mountable on a maneuverable handle of a machine for performing various earth working and material handling functions generally consisting of a first implement pivotally mountable on the handle; a second implement pivotally mountable on the handle, cooperable with the first implement when the implements are mounted on the handle and angularly displaceable between extended, operable positions and a retracted, storage position; a bracket mountable on the handle, an extendable assembly operatively interconnecting the bracket and the second element; and devices disposed on the bracket engageable with the second implement for releaseably retaining the second implement in the storage position.
    Type: Grant
    Filed: August 4, 1999
    Date of Patent: April 3, 2001
    Assignee: Rockland Inc.
    Inventors: Ashley Heiple, Don Keller, Samuel S Pratt
  • Material handling assembly for machines and thumb assembly thereof
    Patent number: 6203267
    Abstract: A material handling assembly mountable on the handle of a machine generally having a bucket pivotally connectable to the handle and a device for pivoting the bucket about the pivotal connection of the bucket to the handle, an arm member pivotally connectable to the handle and cooperable with the bucket when mounted on the handle for clamping material therebetween, a bracket mountable on the handle having a guideway therein, a strut having a first section pivotally connected to the arm member and a second section received within and displaceable along the guideway, and a device for detachably securing the second section of the strut to the bracket at selected points along the length of the guideway.
    Type: Grant
    Filed: August 3, 1999
    Date of Patent: March 20, 2001
    Assignee: Rockland Inc.
    Inventors: Ashley Heiple, Don Keller, Peter Lalos
  • Lamp assembly for a flashlight
    Patent number: 6074072
    Abstract: A lamp assembly for a flashlight including an assembly member, a base carrying a bulb, a board containment member for containing the base within the assembly member, and a fastener for retaining the board containment member against the base. The fastener has external threading which mates with internal threading provided in the through bore of the assembly member.
    Type: Grant
    Filed: July 30, 1998
    Date of Patent: June 13, 2000
    Assignee: Armament and Procedures, Inc.
    Inventors: Kevin L. Parsons, Don Keller, Clay Reeves, Dan Greaney