Patents by Inventor Richard A. Wrege

Richard A. Wrege 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).

  • Gas range having down draft with automatic shutoff during ignition
    Patent number: 5301653
    Abstract: A gas surface range having a downdraft ventilation system with automatic shut off during ignition. A relay is activated by current flowing to the spark coil of the electrical igniter, and has contacts connected in series with the blower motor of the downdraft system. Thus, the downdraft system is disabled during attempted ignition, and is automatically enabled at the completion of ignition.
    Type: Grant
    Filed: January 25, 1993
    Date of Patent: April 12, 1994
    Assignee: Caloric Corporation
    Inventors: Michael D. Gerdes, Richard T. Jahr, William E. Nothe, Calvin J. Thomas, Richard A. Wrege
  • Low cost instant reversing circuit
    Patent number: 4745347
    Abstract: In a single phase AC induction motor having a main winding (1) and an auxiliary winding (2) both connectable to an AC power source (4), and having a start switch (6, 74) for automatically connecting and disconnecting the auxiliary winding (2) to and from the AC source (4) in starting and running modes, respectively, and having a user operated reversing switch (207-212) for reversing the voltage polarity applied from the AC source (4) to one of the windings relative to the other winding, low cost circuitry is provided for detecting the polarity reversal by sensing when one of the main and auxiliary winding voltages shifts from a leading to a lagging position relative to the other winding voltage, whereupon the circuit automatically instantly reconnects the auxiliary winding (2) to the AC source (4) to immediately apply reverse torque.
    Type: Grant
    Filed: September 24, 1986
    Date of Patent: May 17, 1988
    Assignee: PT Components, Inc.
    Inventors: Richard A. Wrege, Victor A. Murn, Dennis K. Lorenz
  • Quick discharge motor starting circuit
    Patent number: 4719399
    Abstract: A motor starting control circuit is provided with an auxiliary switch (100), including a triac (102) and series resistor (114), connected across the start capacitor (5) for quickly discharging the start capacitor (5) upon disconnection of the start capacitor (5) from the AC source (4). This enables a lower rated start switch (6) by eliminating extra voltage thereacross caused by an otherwise charged start capacitor (5).
    Type: Grant
    Filed: September 24, 1986
    Date of Patent: January 12, 1988
    Assignee: PT Components, Inc.
    Inventor: Richard A. Wrege
  • Low cost, load and speed sensitive motor control starting circuit
    Patent number: 4670697
    Abstract: A low cost, low part content single phase AC induction motor control starting circuit is provided which is speed sensitive, load sensitive and AC line voltage fluctuation insensitive. A quad comparator chip (61-64) senses and compares relative magnitudes of main and auxiliary winding voltages (30, 32 and 42) to de-energize the auxiliary winding (2) at cut-out speed, and automatically re-energize the auxiliary winding (2) at cut-in speed to accelerate or restart the motor from a stall or overload condition. Simplified power supply and voltage detection circuitry is also disclosed.
    Type: Grant
    Filed: July 14, 1986
    Date of Patent: June 2, 1987
    Assignee: PT Components, Inc.
    Inventors: Richard A. Wrege, Steven F. Chmiel, Victor A. Murn