Patents Assigned to TMC Enterprises
  • Patent number: 7274153
    Abstract: A hand-held fluorescent lamp assembly powered by typical line supply of 120 VAC, 60 Hz via an attached power cord and employing multiple commonly available fluorescent lamps. The assembly includes switches to independently control the multiple fluorescent lamps. The assembly includes lightweight solid state power regulation components. The power regulation circuit employs a self-oscillating circuit that is approximately matched in frequency of oscillation to the natural frequency of the fluorescent lamp load to automatically ignite the fluorescent lamps. The power regulation circuit includes circuit elements to automatically protect the ballast circuit and lamps from overdrawing in the run state and from abnormal load conditions.
    Type: Grant
    Filed: February 24, 2004
    Date of Patent: September 25, 2007
    Assignee: TMC Enterprises
    Inventors: Thomas J. Miller, Zhou Dong Yue
  • Patent number: 7186130
    Abstract: A plug retention apparatus for use in securing two plug members together to prevent undesired disengagement. The plug retention apparatus is affixed to a first plug member using a retention ring which provides a means for adjustable positioning via a threaded coupling to facilitate securing a second plug member to the first plug member. A plug clamp may be rotatably positioned about the second plug member retaining the plug members in a desired position. The clamp used for retaining the second plug may include a cord support, a latch to secure the cord on the support and a locking mechanism to selectively retain the latch in a closed position.
    Type: Grant
    Filed: July 21, 2005
    Date of Patent: March 6, 2007
    Assignee: TMC Enterprises
    Inventor: Thomas J. Miller
  • Patent number: 7182624
    Abstract: A plug retention apparatus for use in securing two plug members together to prevent undesired disengagement. The plug retention apparatus is affixed to a first plug member using a retention ring which provides a means for adjustable positioning via a threaded coupling to facilitate securing a second plug member to the first plug member. A plug clamp may be rotatably positioned about the second plug member retaining the plug members in a desired position. The plug retention apparatus may include a sleeve removably disposed about the cord of the first plug. The clamp used for retaining the second plug may include a cord support, a latch to secure the cord on the support and a locking mechanism to selectively retain the latch in a closed position.
    Type: Grant
    Filed: September 13, 2005
    Date of Patent: February 27, 2007
    Assignee: TMC Enterprises
    Inventor: Thomas J. Miller
  • Patent number: 7101214
    Abstract: A plug retention apparatus for use in securing two plug members together to prevent undesired disengagement. The plug retention apparatus is affixed to a first plug member using a retention ring which provides a means for adjustable positioning via a threaded coupling to facilitate securing a second plug member to the first plug member. A plug clamp may be rotatably positioned about the second plug member retaining the plug members in a desired position.
    Type: Grant
    Filed: August 22, 2005
    Date of Patent: September 5, 2006
    Assignee: TMC Enterprises
    Inventor: Thomas J. Miller