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).
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Publication number: 20180077663Abstract: 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: ApplicationFiled: November 17, 2017Publication date: March 15, 2018Inventors: Almir D. Davis, Roger J. Wilmarth, Philip S. Babcock, IV, Imran Khan
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Patent number: 9854551Abstract: 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: GrantFiled: May 3, 2016Date of Patent: December 26, 2017Assignee: The Charles Stark Draper Laboratory, Inc.Inventors: Almir D. Davis, Roger J. Wilmarth, Philip S. Babcock, IV, Imran Khan
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Patent number: 9743370Abstract: 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: GrantFiled: April 28, 2015Date of Patent: August 22, 2017Assignee: The Charles Stark Draper Laboratory, Inc.Inventors: Almir D. Davis, Roger J. Wilmarth, Philip S. Babcock, IV, Imran Khan
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Patent number: 9651472Abstract: 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: GrantFiled: April 29, 2016Date of Patent: May 16, 2017Assignee: The Charles Stark Draper Laboratory, Inc.Inventors: Almir D. Davis, William J. Trinkle, Donald Gustafson, Philip S. Babcock, IV, Richard T. Berthold
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Patent number: 9651471Abstract: 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: GrantFiled: May 15, 2015Date of Patent: May 16, 2017Assignee: The Charles Stark Draper Laboratory, Inc.Inventors: Almir D. Davis, William J. Trinkle, Donald Gustafson, Philip S. Babcock, IV, Richard T. Berthold
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Publication number: 20160323841Abstract: 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: ApplicationFiled: May 3, 2016Publication date: November 3, 2016Inventors: Almir D. Davis, Roger J. Wilmarth, Philip S. Babcock, IV, Imran Khan
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Publication number: 20160323839Abstract: 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: ApplicationFiled: April 28, 2015Publication date: November 3, 2016Inventors: Almir D. Davis, Roger J. Wilmarth, Philip S. Babcock, IV, Imran Khan
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Publication number: 20160245737Abstract: 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: ApplicationFiled: April 29, 2016Publication date: August 25, 2016Inventors: Almir D. Davis, William J. Trinkle, Donald Gustafson, Philip S. Babcock, IV, Richard T. Berthold
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Publication number: 20150330946Abstract: 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: ApplicationFiled: May 15, 2015Publication date: November 19, 2015Inventors: Almir D. Davis, William J. Trinkle, Donald Gustafson, Philip S. Babcock, IV, Richard T. Berthold