Patents by Inventor Darrell E. Lee

Darrell E. Lee 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).

  • High intensity light shut-down circuit for night vision goggle
    Patent number: 4755725
    Abstract: A circuit for automatically removing battery power from a night vision goggle (10) upon its detachment from a headgear (12) or when subjected to excessive light. A magnet (34) on the headgear (12) is magnetically coupled to a magnetic reed switch (36) fixed to the goggle (10). On detachment of the goggle (10) from the headgear (12), the reed switch (36) switches battery current to a goggle location monitor (75) for drilling on/off control logic (79) to remove power from an image intensifier tube (40). A high intensity light monitor (80) senses when the ambient light exceeds a predefined intensity, for a predetermined period of time, and also drives the control logic (79) to open a switch (86) in series with the battery (38) and the image intensifier tube (40). A low voltage monitor (82) provides a visual indication (84) of reduced battery voltages.
    Type: Grant
    Filed: February 27, 1987
    Date of Patent: July 5, 1988
    Assignee: Varo, Inc.
    Inventors: William A. Kastendieck, Darrell E. Lee