Patents by Inventor Daniel D. Silbelus

Daniel D. Silbelus 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).

  • Treadmill foot-control for electronic gauging of classroom satisfaction
    Patent number: 5225804
    Abstract: A belted-roller treadmill may be modified to serve as a potentiometer whose variable potential may be controlled by sliding the treadmill's belt (10) back and forth with one's foot. The exposed surfaces of the belt would be flush with the exposed surface of a classroom floor (190). An array of such treadmills may be connected to computer hardware for real-time acquisition of data so that an instructor may gauge his students' satisfaction with his instruction in real time.
    Type: Grant
    Filed: September 30, 1991
    Date of Patent: July 6, 1993
    Inventor: Daniel D. Silbelus