Patents by Inventor Duane M. Jensen

Duane M. Jensen 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).

  • Switch mat with active threshold
    Patent number: 5602428
    Abstract: A pressure sensitive switch mat capable of interconnection with other such switch mats on all sides to eliminate non-activation zones as disclosed. The switch mat has a main switch mat portion and an activation edge on all sides of the switch mat. The activation edge includes a connector retainer lip, an actuation platform and an end portion. When an actuation force is applied to the actuation platform, the switch mat is actuated. A bridge connector for connecting adjacent pressure sensitive switch mats to eliminate non-activation zones therebetween is disclosed. Additionally, a control circuit for the switch mat system that has an integrity monitoring system for providing reliable control of the switch mat system is disclosed.
    Type: Grant
    Filed: June 7, 1995
    Date of Patent: February 11, 1997
    Assignee: Acrometal Companies, Inc.
    Inventors: Joseph F. Schultz, Duane M. Jensen