Patents Assigned to Qualmag, Inc.
  • Uninterruptible transfer switch
    Patent number: 6630752
    Abstract: An uninterruptible transfer switch (UTS) coupled to two or more power sources and a load, said UTS including switches and an inverter, powered through one of several sources routed through rectifiers, capable of sensing power quality of two or more power sources and automatically switching sources when the primary power source is degraded to a predetermined limit and the switching of sources occurring without appreciable power loss on the load side of the UTS.
    Type: Grant
    Filed: September 12, 2001
    Date of Patent: October 7, 2003
    Assignee: Qualmag, Inc.
    Inventors: David J. Fleming, Hassan Yarpezeshkan