Patents by Inventor Roger E. Wiersma

Roger E. Wiersma 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).

  • Sonic monitor system for a tank
    Patent number: 11566932
    Abstract: A sonic monitor system for a tank is disclosed in which the system comprises a remote tank sensor device for installation in a bung opening of a storage tank for determining a level of fluid within the storage tank and for generating a signal indicative of the level of fluid within the storage tank, and a receiver device for receiving the signal indicative of the level of fluid within the storage tank, the receiver device having a display and a siren with the receiver device actuating the siren when the receiver device determines that the level of fluid within the tank is at a predetermined level.
    Type: Grant
    Filed: July 1, 2015
    Date of Patent: January 31, 2023
    Assignee: Husky Corporation
    Inventors: Roger E. Wiersma, Christopher D Gander, Mike E Ciholas
  • Sonic monitor system for a tank
    Publication number: 20160011036
    Abstract: A sonic monitor system for a tank is disclosed in which the system comprises a remote tank sensor device for installation in a bung opening of a storage tank for determining a level of fluid within the storage tank and for generating a signal indicative of the level of fluid within the storage tank, and a receiver device for receiving the signal indicative of the level of fluid within the storage tank, the receiver device having a display and a siren with the receiver device actuating the siren when the receiver device determines that the level of fluid within the tank is at a predetermined level.
    Type: Application
    Filed: July 1, 2015
    Publication date: January 14, 2016
    Inventors: Roger E. Wiersma, Christopher D. Gander
  • Spray gun having multiple size handles
    Publication number: 20030042333
    Abstract: An electrostatic hand (manual) spray gun is provided with a body having a molded handle shaped for smaller hands. One or more grips may be provided which snap on over the molded handle to provide a properly shaped and sized handle for larger hands.
    Type: Application
    Filed: September 6, 2002
    Publication date: March 6, 2003
    Inventors: Roger E. Wiersma, Jeffrey S. Swanson
  • Electrostatic spray gun
    Patent number: D457599
    Type: Grant
    Filed: May 7, 2001
    Date of Patent: May 21, 2002
    Assignee: Graco Minnesota Inc.
    Inventors: Stanley G. Karwoski, Richard D. Anderson, Mark E. Ulrich, Roger E. Wiersma, Mark C. Richter