Patents by Inventor Almir D. Davis

Almir D. Davis 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).

  • Publication number: 20180077663
    Abstract: A linear wireless sensor network includes network nodes having monotonically varying network node identifiers along each branch of the network. The network identifiers enable the nodes to forward network packets without use of routing tables. Low duty cycle wireless communication protocols enable network packets to be routed to all nodes of very large networks while consuming very little electrical power. Broadcast, rather than unicast, transmissions between nodes take advantage of favorable signal propagation conditions to forward messages using largest possible hops, skipping over nodes when possible. A group of network packets is broadcast and forwarded by a most distant receiving node that received all packets of the group. A receiving node's clock is automatically adjusted, based on which packet(s) of a group of packets was received. A sending node synchronizes near-by receiving nodes. Nodes are provisioned over-the-air, with built-in scheduling.
    Type: Application
    Filed: November 17, 2017
    Publication date: March 15, 2018
    Inventors: Almir D. Davis, Roger J. Wilmarth, Philip S. Babcock, IV, Imran Khan
  • Patent number: 9854551
    Abstract: A linear wireless sensor network includes network nodes having monotonically varying network node identifiers along each branch of the network. The network identifiers enable the nodes to forward network packets without use of routing tables. Low duty cycle wireless communication protocols enable network packets to be routed to all nodes of very large networks while consuming very little electrical power. Broadcast, rather than unicast, transmissions between nodes take advantage of favorable signal propagation conditions to forward messages using largest possible hops, skipping over nodes when possible, as well as automatically adapting to time- or spatially-varying conditions. A group of network packets is broadcast and forwarded by a most distant receiving node that received all packets of the group. A receiving node's clock is automatically adjusted, based on which packet(s) of a group of packets was received. A sending node synchronizes near-by receiving nodes.
    Type: Grant
    Filed: May 3, 2016
    Date of Patent: December 26, 2017
    Assignee: The Charles Stark Draper Laboratory, Inc.
    Inventors: Almir D. Davis, Roger J. Wilmarth, Philip S. Babcock, IV, Imran Khan
  • Patent number: 9743370
    Abstract: A linear wireless sensor network includes network nodes having monotonically varying network node identifiers along each branch of the network. The network identifiers enable the nodes to forward network packets without use of routing tables. Low duty cycle wireless communication protocols enable network packets to be routed to all nodes of very large networks while consuming very little electrical power. Broadcast, rather than unicast, transmissions between nodes take advantage of favorable signal propagation conditions to forward messages using largest possible hops, skipping over nodes when possible, as well as automatically adapting to time- or spatially- varying conditions. A group of network packets is broadcast and forwarded by a most distant receiving node that received all packets of the group. A receiving node's clock is automatically adjusted, based on which packet(s) of a group of packets was received. A sending node synchronizes near-by receiving nodes.
    Type: Grant
    Filed: April 28, 2015
    Date of Patent: August 22, 2017
    Assignee: The Charles Stark Draper Laboratory, Inc.
    Inventors: Almir D. Davis, Roger J. Wilmarth, Philip S. Babcock, IV, Imran Khan
  • Patent number: 9651471
    Abstract: Defects in ferromagnetic materials are detected and characterized by analyzing the items' magnetic fields to find portions of the magnetic fields that differ in characteristic ways from residual magnetic fields generated by non-defective portions of the items. The portions of the magnetic fields that differ in the characteristic ways correspond to locations of the defects. The residual magnetic fields correspond to portions of the items distant from the defects. The defect characterization may include volume of material lost due to each defect and/or width and/or depth of each defect.
    Type: Grant
    Filed: May 15, 2015
    Date of Patent: May 16, 2017
    Assignee: The Charles Stark Draper Laboratory, Inc.
    Inventors: Almir D. Davis, William J. Trinkle, Donald Gustafson, Philip S. Babcock, IV, Richard T. Berthold
  • Patent number: 9651472
    Abstract: Defects in ferromagnetic materials are detected and characterized by analyzing the items' magnetic fields to find portions of the magnetic fields that differ in characteristic ways from residual magnetic fields generated by non-defective portions of the items. The portions of the magnetic fields that differ in the characteristic ways correspond to locations of the defects. The residual magnetic fields correspond to portions of the items distant from the defects. The defect characterization may include volume of material lost due to each defect and/or width and/or depth of each defect.
    Type: Grant
    Filed: April 29, 2016
    Date of Patent: May 16, 2017
    Assignee: The Charles Stark Draper Laboratory, Inc.
    Inventors: Almir D. Davis, William J. Trinkle, Donald Gustafson, Philip S. Babcock, IV, Richard T. Berthold
  • Publication number: 20160323839
    Abstract: A linear wireless sensor network includes network nodes having monotonically varying network node identifiers along each branch of the network. The network identifiers enable the nodes to forward network packets without use of routing tables. Low duty cycle wireless communication protocols enable network packets to be routed to all nodes of very large networks while consuming very little electrical power. Broadcast, rather than unicast, transmissions between nodes take advantage of favorable signal propagation conditions to forward messages using largest possible hops, skipping over nodes when possible, as well as automatically adapting to time- or spatially-varying conditions. A group of network packets is broadcast and forwarded by a most distant receiving node that received all packets of the group. A receiving node's clock is automatically adjusted, based on which packet(s) of a group of packets was received. A sending node synchronizes near-by receiving nodes.
    Type: Application
    Filed: April 28, 2015
    Publication date: November 3, 2016
    Inventors: Almir D. Davis, Roger J. Wilmarth, Philip S. Babcock, IV, Imran Khan
  • Publication number: 20160323841
    Abstract: A linear wireless sensor network includes network nodes having monotonically varying network node identifiers along each branch of the network. The network identifiers enable the nodes to forward network packets without use of routing tables. Low duty cycle wireless communication protocols enable network packets to be routed to all nodes of very large networks while consuming very little electrical power. Broadcast, rather than unicast, transmissions between nodes take advantage of favorable signal propagation conditions to forward messages using largest possible hops, skipping over nodes when possible, as well as automatically adapting to time- or spatially-varying conditions. A group of network packets is broadcast and forwarded by a most distant receiving node that received all packets of the group. A receiving node's clock is automatically adjusted, based on which packet(s) of a group of packets was received. A sending node synchronizes near-by receiving nodes.
    Type: Application
    Filed: May 3, 2016
    Publication date: November 3, 2016
    Inventors: Almir D. Davis, Roger J. Wilmarth, Philip S. Babcock, IV, Imran Khan
  • Publication number: 20160245737
    Abstract: Defects in ferromagnetic materials are detected and characterized by analyzing the items' magnetic fields to find portions of the magnetic fields that differ in characteristic ways from residual magnetic fields generated by non-defective portions of the items. The portions of the magnetic fields that differ in the characteristic ways correspond to locations of the defects. The residual magnetic fields correspond to portions of the items distant from the defects. The defect characterization may include volume of material lost due to each defect and/or width and/or depth of each defect.
    Type: Application
    Filed: April 29, 2016
    Publication date: August 25, 2016
    Inventors: Almir D. Davis, William J. Trinkle, Donald Gustafson, Philip S. Babcock, IV, Richard T. Berthold
  • Publication number: 20150330946
    Abstract: Defects in ferromagnetic materials are detected and characterized by analyzing the items' magnetic fields to find portions of the magnetic fields that differ in characteristic ways from residual magnetic fields generated by non-defective portions of the items. The portions of the magnetic fields that differ in the characteristic ways correspond to locations of the defects. The residual magnetic fields correspond to portions of the items distant from the defects. The defect characterization may include volume of material lost due to each defect and/or width and/or depth of each defect.
    Type: Application
    Filed: May 15, 2015
    Publication date: November 19, 2015
    Inventors: Almir D. Davis, William J. Trinkle, Donald Gustafson, Philip S. Babcock, IV, Richard T. Berthold