Patents by Inventor David Bartholomew Chadwick
David Bartholomew Chadwick 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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Patent number: 11950580Abstract: An example line restraint system comprises a housing, a processor, a motor, a release cam, and a timer. The release cam comprises a stem portion and an arm portion. The stem portion is proximate to the housing and the arm portion may be opposite the stem portion. The stem portion may be rotatably coupled to the motor. The motor may be configured to turn the arm portion of the release cam between an open and closed state. When in the closed state, an overhang of the arm portion at least partially defines a cavity capable of retaining a release line. When in the open state, the release cam opens the cavity to enable release of the release line. The timer may receive instructions from the processor to set a particular time and to trigger the motor to turn the release cam from the closed state to the open state.Type: GrantFiled: January 12, 2023Date of Patent: April 9, 2024Assignee: Sub Sea Sonics, LLCInventor: David Bartholomew Chadwick
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Publication number: 20230413792Abstract: An example line restraint system comprises a housing, processor, motor, release cam, and a receiver. The release cam comprises a stem portion opposite an arm portion. The arm portion may extend away from the stem portion of the release cam. The stem portion may be rotatably coupled to the motor with the motor being configured to turn the arm portion of the release cam between an open and closed state. When in the closed state, an overhang of the arm portion of the release cam at least partially defining a cavity capable of retaining a release line. When in the open state, the release cam opening the cavity to enable release of the release line. The receiver may be configured to receive an acoustic signal. The processor may be configured to trigger the release cam to turn based on the acoustic signal.Type: ApplicationFiled: June 22, 2023Publication date: December 28, 2023Applicant: Sub Sea Sonics, LLCInventor: David Bartholomew Chadwick
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Publication number: 20230148113Abstract: An example line restraint system comprises a housing, a processor, a motor, a release cam, and a timer. The release cam comprises a stem portion and an arm portion. The stem portion is proximate to the housing and the arm portion may be opposite the stem portion. The stem portion may be rotatably coupled to the motor. The motor may be configured to turn the arm portion of the release cam between an open and closed state. When in the closed state, an overhang of the arm portion at least partially defines a cavity capable of retaining a release line. When in the open state, the release cam opens the cavity to enable release of the release line. The timer may receive instructions from the processor to set a particular time and to trigger the motor to turn the release cam from the closed state to the open state.Type: ApplicationFiled: January 12, 2023Publication date: May 11, 2023Applicant: Sub Sea Sonics, LLCInventor: David Bartholomew Chadwick
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Patent number: 11570973Abstract: An example line restraint system comprises a housing, a processor, a motor, a release cam, and a timer. The release cam comprises a stem portion and an arm portion. The stem portion is proximate to the housing and the arm portion may be opposite the stem portion. The stem portion may be rotatably coupled to the motor. The motor may be configured to turn the arm portion of the release cam between an open and closed state. When in the closed state, an overhang of the arm portion at least partially defines a cavity capable of retaining a release line. When in the open state, the release cam opens the cavity to enable release of the release line. The timer may receive instructions from the processor to set a particular time and to trigger the motor to turn the release cam from the closed state to the open state.Type: GrantFiled: November 5, 2020Date of Patent: February 7, 2023Assignee: Sub Sea Sonics, LLCInventor: David Bartholomew Chadwick
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Publication number: 20220132819Abstract: An example line restraint system comprises a housing, a processor, a motor, a release cam, and a timer. The release cam comprises a stem portion and an arm portion. The stem portion is proximate to the housing and the arm portion may be opposite the stem portion. The stem portion may be rotatably coupled to the motor. The motor may be configured to turn the arm portion of the release cam between an open and closed state. When in the closed state, an overhang of the arm portion at least partially defines a cavity capable of retaining a release line. When in the open state, the release cam opens the cavity to enable release of the release line. The timer may receive instructions from the processor to set a particular time and to trigger the motor to turn the release cam from the closed state to the open state.Type: ApplicationFiled: November 5, 2020Publication date: May 5, 2022Inventor: David Bartholomew Chadwick
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Patent number: 10460045Abstract: A drifting particle simulator buoy system for a stormwater discharge plume which includes a GPS unit for tracking the buoy GPS location at the surface of the plume and a drogue/winch unit including a drogue chute and winch package which is lowered to the seafloor at a controlled descent rate which is comparable to the descent rate of certain size sediment particles of interest within the stormwater discharge plume. The drogue chute controls lateral drift with the underwater current at approximately the same velocity of the sediment particles of interest. A control unit controls the drogue/winch unit, including controlling the speed of the chute/winch unit to mimic the settling rate of the sediment particles of interest. A bottom detection sensor determines the GPS location where the chute/winch package reaches the seafloor and determining the depositional footprint of contamination at the determined GPS location.Type: GrantFiled: February 18, 2015Date of Patent: October 29, 2019Assignee: United States of America as represented by Secretary of the NavyInventors: David Bartholomew Chadwick, Jonathon Keith Oiler, Matthew Joseph Nicholson
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Patent number: 9810678Abstract: A drifting buoy sampler system for a stormwater discharge plume formed from stormwater discharged into coastal waters. The system compresan electronics sampling pod for collecting integrated water samples within the stormwater plume as the buoy system drifts with the stormwater plume near the water surface as the plume travels out to sea. The pod includes a watertight section including a GPS/radio module for providing GPS (geo-position) location information and a processor for monitoring and controlling the sampling rate, a pump module and a battery module; a passive sampler bag for collecting the integrated water samples; a free flooding section including a composite sample bag module such that the pump module pumps collected samples from the passive sampler bag to the composite sample bag module at a predetermined sampling rate and a ballast module for providing ballast to the system when drifting within the plume.Type: GrantFiled: February 9, 2015Date of Patent: November 7, 2017Assignee: The United States of America as represented by the Secretary of the NavyInventors: David Bartholomew Chadwick, Jonathon Keith Oiler, Matthew Joseph Nicholson
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Patent number: 9484589Abstract: A microbial fuel cell comprising: an anode; an anode chamber configured to house the anode and an oxygen-reduced, nutrient-rich solution from a sediment bottom of a natural water body, wherein the anode chamber shields the anode from surrounding oxygen-rich water; a cathode disposed outside the anode chamber in the oxygen-rich water and electrically coupled in series to the anode via an electrical load; and an agitator configured to periodically agitate the sediment bottom to increase the quantity of nutrients in the nutrient-rich solution.Type: GrantFiled: June 17, 2014Date of Patent: November 1, 2016Assignee: The United States of America as represented by Secretary of the NavyInventors: Lewis Hsu, Wayne Po-Wen Liu, David Bartholomew Chadwick, Jeffrey Asher Kagan
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Publication number: 20160239588Abstract: A drifting particle simulator buoy system for a stormwater discharge plume which includes a GPS unit for tracking the buoy GPS location at the surface of the plume and a drogue/winch unit including a drogue chute and winch package which is lowered to the seafloor at a controlled descent rate which is comparable to the descent rate of certain size sediment particles of interest within the stormwater discharge plume. The drogue chute controls lateral drift with the underwater current at approximately the same velocity of the sediment particles of interest. A control unit controls the drogue/winch unit, including controlling the speed of the chute/winch unit to mimic the settling rate of the sediment particles of interest. A bottom detection sensor determines the GPS location where the chute/winch package reaches the seafloor and determining the depositional footprint of contamination at the determined GPS location.Type: ApplicationFiled: February 18, 2015Publication date: August 18, 2016Inventors: David Bartholomew Chadwick, Joathon Keith Oiler, Matthew Joseph Nicholson
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Publication number: 20160231302Abstract: A drifting buoy sampler system for a stormwater discharge plume formed from stormwater discharged into coastal waters. The system compresan electronics sampling pod for collecting integrated water samples within the stormwater plume as the buoy system drifts with the stormwater plume near the water surface as the plume travels out to sea. The pod includes a watertight section including a GPS/radio module for providing GPS (geo-position) location information and a processor for monitoring and controlling the sampling rate, a pump module and a battery module; a passive sampler bag for collecting the integrated water samples; a free flooding section including a composite sample bag module such that the pump module pumps collected samples from the passive sampler bag to the composite sample bag module at a predetermined sampling rate and a ballast module for providing ballast to the system when drifting within the plume.Type: ApplicationFiled: February 9, 2015Publication date: August 11, 2016Inventors: David Bartholomew Chadwick, Jonathon Keith Oiler, Matthew Joseph Nicholson
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Patent number: 9166242Abstract: An energy harvester comprising: a microbial fuel cell comprising an anode; and a pump comprising a flexible diaphragm that is configured to be flexed by an ambient, renewable energy source such that with each flexing of the diaphragm nutrient-rich media is pumped past the anode.Type: GrantFiled: August 13, 2013Date of Patent: October 20, 2015Assignee: The United States of America, as represented by the Secretary of the NavyInventors: Wayne Po-Wen Liu, David Bartholomew Chadwick, Jeffrey Asher Kagan
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Publication number: 20150249257Abstract: An energy harvester comprising: a microbial fuel cell comprising an anode; and a pump comprising a flexible diaphragm that is configured to be flexed by an ambient, renewable energy source such that with each flexing of the diaphragm nutrient-rich media is pumped past the anode.Type: ApplicationFiled: August 13, 2013Publication date: September 3, 2015Inventors: Wayne Po-Wen Liu, David Bartholomew Chadwick, Jeffrey Asher Kagan
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Patent number: 9040204Abstract: A microbial fuel cell comprising: a first cathode; at least two anodes electrically connected to each other and to the cathode in a reconfigurable manner; and a processor operatively coupled to the anodes and configured to monitor a parameter of each anode to determine if a given anode has been oxygen-contaminated, and further configured to convert an oxygen-contaminated anode into a second cathode by reconfiguring the electrical connections.Type: GrantFiled: February 21, 2013Date of Patent: May 26, 2015Assignee: The United States of America as represented by the Secretary of the NavyInventors: Wayne P. Liu, David Bartholomew Chadwick, Kenneth E. Richter, Adriane Q. Wotawa-Bergen, Jeffrey Asher Kagan
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Patent number: 7711489Abstract: A Trident Probe Groundwater Exchange System (NC#096456). The apparatus includes a groundwater conductivity sensor, designed to determine a groundwater conductivity surface; a water conductivity sensor, designed to determine a surface water conductivity groundwater; a temperature sensor, designed to determine a groundwater temperature; a surface water temperature sensor, designed to determine a surface water temperature; and a processor operatively coupled to a plurality of sensors and designed to receive information from the plurality of sensors.Type: GrantFiled: September 27, 2007Date of Patent: May 4, 2010Assignee: United States of America as represented by Secretary of the NavyInventors: David Bartholomew Chadwick, Gregory Jon Groves, Christopher Field Smith, Ronald J. Paulsen
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Patent number: 7444891Abstract: A method includes providing a sampling device having a sampling chamber therein, a pump operatively coupled to the sampling chamber, and a drive means coupled to the sampling chamber; situating the sampling device against an underwater boat hull having contaminants attached thereto, wherein situating the sampling device against the underwater boat hull causes water to be disposed within the sampling chamber; activating the pump to remove a portion of the water from the sampling chamber, wherein negative pressure is created within the sampling chamber and a watertight seal is formed between the sampling chamber and the underwater boat hull; activating the drive means to remove a sample of the contaminants from the underwater boat hull, wherein the sample of the contaminants is collected in the sampling chamber; deactivating the mechanical drive means; and sealing the sampling chamber, wherein the sample of the contaminants is stored within the sampling chamber.Type: GrantFiled: June 7, 2006Date of Patent: November 4, 2008Assignee: The United States of America as represented by the Secretary of the NavyInventors: David Bartholomew Chadwick, Ignacio Rivera-Duarte, Robert Martin Cook
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Patent number: 7437959Abstract: An In-Water Hull Cleaning Sampling Device includes a sampling chamber, a drive shaft housing, a drive shaft sealing membrane, a drive shaft, a spring retainer, a pressure spring, a cleaning pad, a mechanical drive device and a chamber sealing means. The sampling chamber further includes a chamber sealing membrane coupled to a base; and a chamber wall coupled to the base and a chamber ceiling.Type: GrantFiled: May 1, 2006Date of Patent: October 21, 2008Assignee: The United States of America as represented by the Secretary of the NavyInventors: David Bartholomew Chadwick, Ignacio Rivera-Duarte, Robert Martin Cook