Patents Represented by Law Firm McAffe & Taft
  • Smart logic switching uninterruptible power source
    Patent number: 5955844
    Abstract: An uninterruptible power source for emergency lighting in an AC powered electrical system utilizes X-10 protocol transmitters and receivers for transmitting and receiving data signals over existing wiring to emergency wall switches interposed in the wiring for maintaining emergency lighting in the on condition when AC commercial power is interrupted and a battery powered backup unit converting DC to AC is activated upon the interruption of the commercial AC source.
    Type: Grant
    Filed: August 25, 1997
    Date of Patent: September 21, 1999
    Inventor: Robert Redgate
  • Trailer entry handle
    Patent number: D407293
    Type: Grant
    Filed: October 24, 1997
    Date of Patent: March 30, 1999
    Assignee: Antec Fabrication, Inc.
    Inventor: Michale W. Haggard