Patents by Inventor John L. Wenger

John L. Wenger 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: 5815057
    Abstract: An electromagnetic switching device for controlling the flow of electrical current between a plurality of pins. The switching device includes a base, an input pin, first and second output pins, a reed, an actuator, a magnetic field generator, and generator pins. The reed and actuators are movable between a first position which electrically couples the first output pin and the input pin, and a second position which electrically couples the second output pin and the input pin. Dielectric compatible plastic material with enhanced shielding characteristics is located in apertures in the base to structurally retain the pins therein. The actuator further includes a center body portion, an arm integrally molded with the center body portion extending generally laterally outward therefrom, and a finger depending downwardly from the arm. The finger is structurally coupled to the movable reed to move the reed between its first and second positions.
    Type: Grant
    Filed: May 17, 1996
    Date of Patent: September 29, 1998
    Assignee: K & L Microwave Incorporated
    Inventors: Jerzy Hoffman, John L. Wenger
  • Patent number: 4543806
    Abstract: A portable, hand-holdable, retractable cable lock includes a cable-carrying spool rotatably mounted within a casing. The cable extends through the casing and its free end may be locked to the casing to provide a theft deterrent. A coil spring within the casing applies a retracting force on the spool so that when the cable is unlocked and in an extended position the spring automatically rotates the spool to rewind the cable thereon. A ratchet mechanism permits free rotation of the spool in one direction to extend the cable, but prevents rotation of the spool in its other direction to rewind the cable unless disengaged.
    Type: Grant
    Filed: July 18, 1983
    Date of Patent: October 1, 1985
    Assignee: James J. Papandrea
    Inventors: James J. Papandrea, John L. Wenger