Patents by Inventor Joseph S. Calabrese

Joseph S. Calabrese 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).

  • Tapped variable potentiometer resistor with current sense and safety circuit
    Patent number: 5812411
    Abstract: An electronic selector knob circuit (10) which uses a tapped potentiometer (POT1) to provide accurate operation without requiring factory calibration. The potentiometer (POT1) is calibrated through on-board circuitry which includes a tap voltage biasing device and which monitors operation on a continual basis through both a current monitor (16) and a voltage monitor (18). A redundant disable circuit (14) provides a redundant hardware means for shutting off all oven heating elements.
    Type: Grant
    Filed: January 28, 1997
    Date of Patent: September 22, 1998
    Inventors: Joseph S. Calabrese, Bay E. Estes, III
  • Multiple switch assembly including spring biased rotary cam with concentric cam tracks for selectively operating switches
    Patent number: 5668359
    Abstract: A rotary encoded switch having a plurality of stationary discrete micro switches operated by a rotor having a plurality of concentric cam tracks. The cam tracks and switches are disposed such that for each rotary position of the rotor at least two switches, on opposite sides of the rotor are actuated and a discrete combination of switches is actuated for each position of the rotor. The number of microswitches required is less than half the number of rotary positions.
    Type: Grant
    Filed: March 1, 1996
    Date of Patent: September 16, 1997
    Assignee: Eaton Corporation
    Inventors: Robert J. Alvord, Jeffrey M. Huffington, Yoshio W. Kano, Joseph S. Calabrese, Kayvan K. Mirza