Patents by Inventor Roy F. Johnson

Roy F. Johnson 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: 7213821
    Abstract: An expandable cart apparatus includes a cart that has a bottom wall, a front wall, a back wall, a first side wall and a second side wall. The cart includes four vertically orientated corners each defining a post with an open upper end. A plurality of wheels is rotatably coupled to the bottom wall. A loop has a generally rectangular shape and includes a pair of lateral portions and a pair of end portions. Each of a plurality of secondary walls is attached to and extends downwardly from one of the lateral and end portions. Each of a plurality of rods is attached to the loop and extends downwardly therefrom. Each of the rods is extended into one of the upper ends of the posts. The rods are selectively positionable with respect to the posts so that each of the secondary walls is positioned outside of the cart.
    Type: Grant
    Filed: December 28, 2004
    Date of Patent: May 8, 2007
    Inventor: Roy F. Johnson
  • Patent number: 6675840
    Abstract: A fill probe with an in-line mixer accelerates and facilitates automation of a fill and mix procedure required in formulating certain chemical products. In some formulas, the concentrated chemical components that combine to form the resulting formula (e.g., teat dip) have a wide range of viscosities. The in-line positioning of the mixing attachment with the fill probe on the outside of the fill probe creates a dual action mixing operation that mixes the components as they are deliver to a mixing container and continues to mix them after they are combined with other chemicals within the mixing container. By using a combination fill probe and in-line mixer of the claimed design, a user can automate the fill and mix process, decrease the required mix time, and reduce foaming and spillage of chemicals.
    Type: Grant
    Filed: September 20, 2001
    Date of Patent: January 13, 2004
    Assignee: Ecolab, Inc.
    Inventors: Ronald D. Jungmann, Roy F. Johnson, Richard V. Mullen
  • Publication number: 20030051765
    Abstract: A fill probe with an in-line mixer accelerates and facilitates automation of a fill and mix procedure required in formulating certain chemical products. In some formulas, the concentrated chemical components that combine to form the resulting formula (e.g., teat dip) have a wide range of viscosities. The in-line positioning of the mixing attachment with the fill probe on the outside of the fill probe creates a dual action mixing operation that mixes the components as they are deliver to a mixing container and continues to mix them after they are combined with other chemicals within the mixing container. By using a combination fill probe and in-line mixer of the claimed design, a user can automate the fill and mix process, decrease the required mix time, and reduce foaming and spillage of chemicals.
    Type: Application
    Filed: September 20, 2001
    Publication date: March 20, 2003
    Applicant: Ecolab Inc.
    Inventors: Ronald D. Jungmann, Roy F. Johnson, Richard V. Mullen
  • Patent number: 6131774
    Abstract: A flowable material dispensing system that will dispense a flowable material into a container and stop dispensing when the proper level is reached in the container. The container has an actuating device that is used to open the valve on the container. As the flowable material flows into the container and reaches the top, flow stops.
    Type: Grant
    Filed: April 8, 1998
    Date of Patent: October 17, 2000
    Assignee: Ecolab Inc.
    Inventors: John E. Thomas, James L. Copeland, Jamie W. Lerbs, Roy F. Johnson