Patents by Inventor Ralph Chrzastek

Ralph Chrzastek 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: 5253564
    Abstract: A control device for a multi-zone conveyor oven constructed according to the present invention comprises a microprocessor-based controller, appropriate control software, a keyboard and display for interaction with a user, means for sensing the conveyor speed and the heating chamber temperature, and means for controlling the power supplied to the conveyor motor and the heating elements. The controller provides facilities for user programming of sets of oven parameters, each set corresponding to a particular food product to be cooked in the oven. Each set of parameters includes the total cook time for the product and a desired temperature which is independently selectable for each heating zone. Once a set of parameters has been programmed, it is assigned to a particular key on the keyboard, and the user may select that entire set of parameters by simply pushing the assigned key. The parameters are stored in the EEPROM to prevent their loss during electrical power interruptions.
    Type: Grant
    Filed: September 4, 1992
    Date of Patent: October 19, 1993
    Assignee: The Middleby Corporation
    Inventors: Richard Rosenbrock, William S. Schjerven, Sr., Ralph A. Chrzastek
  • Patent number: 5197375
    Abstract: A control device for a multi-zone conveyor oven constructed according to the present invention comprises a microprocessor-based controller, appropriate control software, a keyboard and display for interaction with a user, means for sensing the conveyor speed and the heating chamber temperature, and means for controlling the power supplied to the conveyor motor and the heating elements. The controller provides facilities for user programming of sets of oven parameters, each set corresponding to a particular food product to be cooked in the oven. Each set of parameters includes the total cook time for the product and a desired temperature which is independently selectable for each heating zone. Once a set of parameters has been programmed, it is assigned to a particular key on the keyboard, and the user may select that entire set of parameters by simply pushing the assigned key. The parameters are stored in the EEPROM to prevent their loss during electrical power inteerruptions.
    Type: Grant
    Filed: August 30, 1991
    Date of Patent: March 30, 1993
    Assignee: The Middleby Corporation
    Inventors: Richard Rosenbrock, Ralph A. Chrzastek, William S. Schjerven, Sr.
  • Patent number: 4964392
    Abstract: An oven for baking objects, especially pizzas, has an indirect drive for enabling it to accommodate differences in commercial power on a worldwide basis, by simply changing the ratio of gears, sprockets or pulleys. Various access panels and doors on the oven may be opened to facilitate installation, removal, and maintenance of the oven without requiring a significant partial disassembly thereof. An access window is held under gravity in either an open or a closed position in order to eliminate clips, springs, and the like, which may tend to become fatigued and break as a result of the repeated heating and cooling.
    Type: Grant
    Filed: December 15, 1988
    Date of Patent: October 23, 1990
    Assignee: Middleby Marshall Inc.
    Inventors: Adrian A. Bruno, Thomas Diwisch, Ralph Chrzastek, Richard Casanzio