Patents by Inventor Michael W. Dugan

Michael W. Dugan 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).

  • Hoistway communication system
    Patent number: 10099893
    Abstract: A communication system includes a host node and a plurality of network nodes. The host node has a processor, a non-transitory computer memory, a host receiver, and a host output select line. Each of the plurality of network nodes has an input select line, an output select line, and a tri-state transceiver. The host node and the plurality of network nodes are daisy chained such that the input select line of one of the plurality of network nodes is coupled to the output select line of the preceding node. The tri-state transceiver of each of the plurality of network nodes is activated when the input select line of that node receives a token from the output select line of the preceding node.
    Type: Grant
    Filed: September 21, 2015
    Date of Patent: October 16, 2018
    Assignee: THYSSENKRUPP ELEVATOR AG
    Inventors: Michael W. Dugan, Christopher A. Taylor
  • Hoistway Communication System
    Publication number: 20170081149
    Abstract: A communication system includes a host node and a plurality of network nodes. The host node has a processor, a non-transitory computer memory, a host receiver, and a host output select line. Each of the plurality of network nodes has an input select line, an output select line, and a tri-state transceiver. The host node and the plurality of network nodes are daisy chained such that the input select line of one of the plurality of network nodes is coupled to the output select line of the preceding node. The tri-state transceiver of each of the plurality of network nodes is activated when the input select line of that node receives a token from the output select line of the preceding node.
    Type: Application
    Filed: September 21, 2015
    Publication date: March 23, 2017
    Inventors: Michael W. Dugan, Christopher A. Taylor