Patents by Inventor Lawrence G. Corey

Lawrence G. Corey 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: 5694011
    Abstract: A windshield wiper control detects a stall condition of the windshield wiper motor such as may be caused by a freezing of wiper blades to the windshield by monitoring the commutating switch normally used to park the windshield wiper blades when the wipers are turned off. Failure of the signal from the switch to change indicates the motor has stalled and causes a timer holding a value greater than a wiper cycle to time out and de-energize the wiper motor. The wiper motor is re-energized by turning off then on again the wiper control. A method of setting the interval between intermittent operation of the wiper with a single switch, times from previous wiper cycles to the switch activation to set a longer or shorter wiper cycle interval.
    Type: Grant
    Filed: April 25, 1996
    Date of Patent: December 2, 1997
    Assignee: Eaton Corporation
    Inventors: Lawrence G. Corey, Helmut Guehr
  • Patent number: 5691612
    Abstract: Harsh full voltage conductive switching action is removed from a commutator-type rotary switch integral with a motor assembly and is placed in relay contacts external to the motor assembly by controlling reduced current through the rotary switch to the relay to maintain the relay energized after a control voltage is removed from the relay, and initiating a fixed time one-shot pulse generator in response to the rotary switch opening the reduced current to de-energize the relay and switch the load into a dynamic braking circuit at a particularly timed moment.
    Type: Grant
    Filed: January 29, 1996
    Date of Patent: November 25, 1997
    Assignee: Eaton Corporation
    Inventor: Lawrence G. Corey
  • Patent number: 5471024
    Abstract: A flexible movable contact having fulcrums for pivoting the contact within notches of a terminal has a tab between the fulcrums offset downwardly and projecting outwardly that extends through an aperture in a flat U-shaped insulating contact carrier to attach one end of the contact to the carrier. A right-angle flat transition surface between the offset tab and primary plane of the contact abuts a convex surface forming an edge of the aperture to permit the contact to pivot relative to the carrier for self-alignment of the fulcrums in the notches. A beam of the contact extends obliquely away from the carrier and has lateral arms terminating in hook portions engaging an opposite side of the carrier. Ears bent over on the free end of the contact beam arrest overtravel movement of the carrier, which movement can be closely controlled by tolerances between the ears and hook portions during manufacture of the movable contact.
    Type: Grant
    Filed: September 12, 1994
    Date of Patent: November 28, 1995
    Assignee: Eaton Corporation
    Inventors: Michael E. Ross, Robert A. Borsos, Lawrence G. Corey
  • Patent number: 5153806
    Abstract: An alarm circuit for a transient voltage suppression circuit for protection of equipment using alternating current power is shown and described. This device utilizes a pair of diodes having the same terminals (polarity) connected to a node to which a resistor provides an AC voltage. The diodes conduct during one half cycle in normal operation, and the node is at a virtual ground when both diodes conduct. When a fuse from one diode to ground opens, current no longer flows and the voltage at the node rises as the other diode conducts and applies a voltage to resistors and an alarm input.There is also disclosed a suppression circuit which provides for isolation of the ground from neutral in the event of failure of the varistor.
    Type: Grant
    Filed: June 7, 1989
    Date of Patent: October 6, 1992
    Inventor: Lawrence G. Corey
  • Patent number: 4199791
    Abstract: Apparatus for receiving a transmission including message signals each preceded by a recording device selection component and recording each message signal on a recording device identified by the selection component. The apparatus includes a plurality of recording devices, means for identifying the recording device selected by the selection component and for actuating the recording device to record the next succeeding message signal.
    Type: Grant
    Filed: April 17, 1978
    Date of Patent: April 22, 1980
    Assignee: UMC Electronics Co.
    Inventor: Lawrence G. Corey