Patents by Inventor David E. Vokey
David E. Vokey 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: 20230386308Abstract: In some embodiments, optical fiber monitoring may be facilitated. In some embodiments, monitoring of an optical fiber may be performed via a detection system to detect changes in the optical fiber that are indicative of one or more events. During the monitoring, a monitor signal may be transmitted along the optical fiber via a light source, where the monitor signal is received by the detection system as light from the optical fiber. While the detection system continues to receive light from the optical fiber in connection with the transmitting of the monitor signal, a test disturbance event may be caused to occur at a predetermined location along the optical fiber via a device at the predetermined location. In response to a failure of the detection system to detect test-related changes in the optical fiber caused by the test disturbance event, a notification indicating an issue may be generated.Type: ApplicationFiled: July 31, 2023Publication date: November 30, 2023Applicant: CyberSecure IPS, LLCInventors: Cary R. MURPHY, David E. VOKEY, Mark K. BRIDGES
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Patent number: 11735016Abstract: In an optical fiber monitoring system which detects physical disturbance or other parameters such as temperature or strain of a fiber where a monitor signal is transmitted along the optical fiber and analyzed to detect changes which are indicative of an event, a method is provided for periodically checking proper operation of the optical fiber monitoring system. A fiber disturbance actuator periodically causes a pattern of disturbances of a portion of the fiber at a predetermined location thereon where the disturbance is characteristic of the event to be monitored. The monitor signal is analyzed to detect the pattern of changes and in the event that expected changes are not detected, a warning is issued that the intrusion detection system is not properly operating.Type: GrantFiled: October 14, 2022Date of Patent: August 22, 2023Assignee: CYBERSECURE IPS LLCInventors: Cary R. Murphy, David E. Vokey, Mark K. Bridges
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Publication number: 20230069526Abstract: In an optical fiber monitoring system which detects physical disturbance or other parameters such as temperature or strain of a fiber where a monitor signal is transmitted along the optical fiber and analyzed to detect changes which are indicative of an event, a method is provided for periodically checking proper operation of the optical fiber monitoring system. A fiber disturbance actuator periodically causes a pattern of disturbances of a portion of the fiber at a predetermined location thereon where the disturbance is characteristic of the event to be monitored. The monitor signal is analyzed to detect the pattern of changes and in the event that expected changes are not detected, a warning is issued that the intrusion detection system is not properly operating.Type: ApplicationFiled: October 14, 2022Publication date: March 2, 2023Inventors: Cary R. Murphy, David E. Vokey, Mark K. Bridges
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Patent number: 11501617Abstract: In an optical fiber monitoring system which detects physical disturbance or other parameters such as temperature or strain of a fiber where a monitor signal is transmitted along the optical fiber and analyzed to detect changes which are indicative of an event, a method is provided for periodically checking proper operation of the optical fiber monitoring system. A fiber disturbance actuator periodically causes a pattern of disturbances of a portion of the fiber at a predetermined location thereon where the disturbance is characteristic of the event to be monitored. The monitor signal is analyzed to detect the pattern of changes and in the event that expected changes are not detected, a warning is issued that the intrusion detection system is not properly operating.Type: GrantFiled: November 4, 2020Date of Patent: November 15, 2022Assignee: Network Integrity Systems, Inc.Inventors: Cary R. Murphy, David E. Vokey, Mark K. Bridges
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Publication number: 20220084377Abstract: In an optical fiber monitoring system which detects physical disturbance or other parameters such as temperature or strain of a fiber where a monitor signal is transmitted along the optical fiber and analyzed to detect changes which are indicative of an event, a method is provided for periodically checking proper operation of the optical fiber monitoring system. :A fiber disturbance actuator periodically causes a pattern of disturbances of a portion of the fiber at a predetermined location thereon where the disturbance is characteristic of the event to be monitored. The monitor signal is analyzed to detect the pattern of changes and in the event that expected changes are not detected, a warning is issued that the intrusion detection system is not properly operating.Type: ApplicationFiled: November 4, 2020Publication date: March 17, 2022Inventors: Cary R. Murphy, David E. Vokey, Mark K. Bridges
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Patent number: 10600294Abstract: A method is provided for detecting intrusion into an optical cable of a single mode optical fiber network comprising where monitoring light signals are transmitted along a telecommunications optical fiber to be monitored either along a fiber additional to a data fiber or by multiplexing onto a common fiber. The received monitoring light signals after transmission along the telecommunications optical fiber are analyzed for changes indicative of movement of the optical fiber for detecting an intrusion event. The monitoring light signals at the receive end of the fiber signals are monitored by feeding the signals from the single mode fiber into a multi-mode fiber in a manner which causes changes in modal power distribution which can be detected by taking a portion only of the modes.Type: GrantFiled: August 16, 2019Date of Patent: March 24, 2020Assignee: Network Integrity Systems, Inc.Inventors: Cary R. Murphy, Mark K. Bridges, David Thompson, Joseph Giovannini, David E. Vokey
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Publication number: 20200035074Abstract: A method is provided for detecting intrusion into an optical cable of a single mode optical fiber network comprising where monitoring light signals are transmitted along a telecommunications optical fiber to be monitored either along a fiber additional to a data fiber or by multiplexing onto a common fiber. The received monitoring light signals after transmission along the telecommunications optical fiber are analyzed for changes indicative of movement of the optical fiber for detecting an intrusion event. The monitoring light signals at the receive end of the fiber signals are monitored by feeding the signals from the single mode fiber into a multi-mode fiber in a manner which causes changes in modal power distribution which can be detected by taking a portion only of the modes.Type: ApplicationFiled: August 16, 2019Publication date: January 30, 2020Inventors: Cary R. Murphy, Mark K. Bridges, David Thompson, Joseph Giovannini, David E. Vokey
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Patent number: 10388128Abstract: A method is provided for detecting intrusion into an optical cable of a single mode optical fiber network comprising where monitoring light signals are transmitted along a telecommunications optical fiber to be monitored either along a fiber additional to a data fiber or by multiplexing onto a common fiber. The received monitoring light signals after transmission along the telecommunications optical fiber are analyzed for changes indicative of movement of the optical fiber for detecting an intrusion event. The monitoring light signals at the receive end of the fiber signals are monitored by feeding the signals from the single mode fiber into a multi-mode fiber in a manner which causes changes in modal power distribution which can be detected by taking a portion only of the modes.Type: GrantFiled: July 6, 2017Date of Patent: August 20, 2019Assignee: Network Integrity Systems, Inc.Inventors: Cary R. Murphy, Mark K. Bridges, David Thompson, Joseph Giovannini, David E. Vokey
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Publication number: 20180033269Abstract: A method is provided for detecting intrusion into an optical cable of a single mode optical fiber network comprising where monitoring light signals are transmitted along a telecommunications optical fiber to be monitored either along a fiber additional to a data fiber or by multiplexing onto a common fiber. The received monitoring light signals after transmission along the telecommunications optical fiber are analyzed for changes indicative of movement of the optical fiber for detecting an intrusion event. The monitoring light signals at the receive end of the fiber signals are monitored by feeding the signals from the single mode fiber into a multi-mode fiber in a manner which causes changes in modal power distribution which can be detected by taking a portion only of the modes.Type: ApplicationFiled: July 6, 2017Publication date: February 1, 2018Inventors: Cary R. Murphy, Mark K. Bridges, David Thompson, Joseph Giovannini, David E. Vokey
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Patent number: 9695593Abstract: Leaks in a roof membrane are detected by applying a grid of electrically conductive shielding elements on the upper surface separating the membrane into a plurality of zones and generating a potential difference between the elements and a conductive component such as the roof deck or a layer at the deck. In each zone a respective one of a plurality of sensor conductors is mounted separate from the shielding elements and an electrical potential difference is applied between the sensor and the conductive component such that, in the presence of a leak located within the zone, current flows between the sensor conductor and the conductive component through moisture at the leak for detection of the current or resistance indicative of a leak.Type: GrantFiled: November 10, 2015Date of Patent: July 4, 2017Assignee: Detec Systems LLCInventors: David E. Vokey, Mark K. Bridges
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Publication number: 20170130459Abstract: Leaks in a roof membrane are detected by applying a grid of electrically conductive shielding elements on the upper surface separating the membrane into a plurality of zones and generating a potential difference between the elements and a conductive component such as the roof deck or a layer at the deck. In each zone a respective one of a plurality of sensor conductors is mounted separate from the shielding elements and an electrical potential difference is applied between the sensor and the conductive component such that, in the presence of a leak located within the zone, current flows between the sensor conductor and the conductive component through moisture at the leak for detection of the current or resistance indicative of a leak.Type: ApplicationFiled: November 10, 2015Publication date: May 11, 2017Inventors: David E. Vokey, Mark K. Bridges
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Patent number: 9374157Abstract: A method is provided for detecting movement indicative of intrusion events on optical drop fibers of a network where the individual drop fiber can be identified to locate the event. The method uses a monitor system at the network end and multiplexing the monitor signal along the individual fibers to the respective terminals. At each of the terminals, the monitor signal is returned unchanged or in modified form along the same or different fibers to the network end. At the network end the received monitor signals is analyzed for changes in said monitor signals indicative of movement. Which one or more of the drop fibers has triggered the alarm is determined by modifying the monitor signal in wavelength or polarization, or by applying a modulation at the source and/or at multiplexing and/or at returning so that the monitor signal of one drop fiber has a difference from the monitor signal of another drop fiber.Type: GrantFiled: August 12, 2014Date of Patent: June 21, 2016Assignee: Network Integrity Systems, Inc.Inventors: Cary R. Murphy, Mark K. Bridges, David E. Vokey, Daniel Goertzen, Joseph Giovannini
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Patent number: 9244030Abstract: In a method of detecting a leak in a water impermeable membrane applied on a roof substrate, an electrical potential is created between a conductive detector on top of the membrane and the roof substrate causing current to flow between the roof substrate and the conductive detector through moisture in any leak in the membrane. The membrane is attached to the roof support substrate by an intervening layer therebetween which can be a primer or an adhesive layer which is caused to be electrically conductive by the addition an electrically conductive material. This allows the conductor on the roof substrate to which the potential difference is applied to be attached onto the roof substrate and covered by the layer underneath the membrane.Type: GrantFiled: July 11, 2013Date of Patent: January 26, 2016Assignee: Detec Systems LLCInventors: David E. Vokey, Walter Isaac Jordan
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Publication number: 20150333822Abstract: A method is provided for detecting intrusion into an optical cable of an optical network comprising where monitoring light signals are transmitted along a telecommunications optical fiber to be monitored either along a fiber additional to a data fiber or by multiplexing onto a common fiber. The received monitoring light signals after transmission along the telecommunications optical fiber are analyzed for changes indicative of movement of the optical fiber for detecting an intrusion event. The monitoring light signals at the receive end of the fiber signals are returned along the same fiber by a coupler where the legs are connected or by a reflective material.Type: ApplicationFiled: December 31, 2013Publication date: November 19, 2015Applicant: Network Integrity Systems, Inc.Inventors: Cary R. Murphy, Mark K. Bridges, David Thompson, Joseph Giovannini, David E. Vokey
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Patent number: 9046669Abstract: A fiber optic network has alarmed fiber optic lines in the cables connecting a secured junction box to plural user lock boxes. An outgoing alarm line and return alarm line in each cable connect the junction box to each user box. The outgoing alarm line is looped to the return alarm line inside the user lock box. The return alarm line is looped to the outgoing alarm line of a different cable inside the junction box to interconnect a plurality of alarm lines passing through a plurality of user boxes. A detector detects an alarm signal in the connected alarm lines to trigger an intrusion alarm. Power to the components in the box is disconnected when the box is opened and ventilation openings to the box are closed when the box is closed.Type: GrantFiled: October 1, 2013Date of Patent: June 2, 2015Assignee: Network Integrity Systems Inc.Inventors: Cary R. Murphy, Mark K Bridges, Joseph Giovannini, David Thompson, David E. Vokey
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Publication number: 20150086195Abstract: A method is provided for detecting movement indicative of intrusion events on optical drop fibers of a network where the individual drop fiber can be identified to locate the event. The method uses a monitor system at the network end and multiplexing the monitor signal along the individual fibers to the respective terminals. At each of the terminals, the monitor signal is returned unchanged or in modified form along the same or different fibers to the network end. At the network end the received monitor signals is analyzed for changes in said monitor signals indicative of movement. Which one or more of the drop fibers has triggered the alarm is determined by modifying the monitor signal in wavelength or polarization, or by applying a modulation at the source and/or at multiplexing and/or at returning so that the monitor signal of one drop fiber has a difference from the monitor signal of another drop fiber.Type: ApplicationFiled: August 12, 2014Publication date: March 26, 2015Inventors: Cary R. Murphy, Mark K. Bridges, David E. Vokey, Daniel Goertzen
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Publication number: 20150015398Abstract: A method is provided for detecting intrusion into an optical cable of a single mode optical fiber network comprising where monitoring light signals are transmitted along a telecommunications optical fiber to be monitored either along a fiber additional to a data fiber or by multiplexing onto a common fiber. The received monitoring light signals after transmission along the telecommunications optical fiber are analyzed for changes indicative of movement of the optical fiber for detecting an intrusion event. The monitoring light signals at the receive end of the fiber signals are monitored by feeding the signals from the single mode fiber into a multi-mode fiber in a manner which causes changes in modal power distribution which can be detected by taking a portion only of the modes.Type: ApplicationFiled: August 18, 2014Publication date: January 15, 2015Inventors: Cary R. Murphy, Mark K. Bridges, David Thompson, Joseph Giovannini, David E. Vokey
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Publication number: 20140361796Abstract: In a method of detecting a leak in a water impermeable membrane applied on a roof substrate, an electrical potential is created between a conductive detector on top of the membrane and the roof substrate causing current to flow between the roof substrate and the conductive detector through moisture in any leak in the membrane. The membrane is attached to the roof support substrate by an intervening layer therebetween which can be a primer or an adhesive layer which is caused to be electrically conductive by the addition an electrically conductive material. This allows the conductor on the roof substrate to which the potential difference is applied to be attached onto the roof substrate and covered by the layer underneath the membrane.Type: ApplicationFiled: July 11, 2013Publication date: December 11, 2014Inventors: David E. Vokey, Walter Isaac Jordan
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Publication number: 20140153889Abstract: A fiber optic network has alarmed fiber optic lines in the cables connecting a secured junction box to plural user lock boxes. An outgoing alarm line and return alarm line in each cable connect the junction box to each user box. The outgoing alarm line is looped to the return alarm line inside the user lock box. The return alarm line is looped to the outgoing alarm line of a different cable inside the junction box to interconnect a plurality of alarm lines passing through a plurality of user boxes. A detector detects an alarm signal in the connected alarm lines to trigger an intrusion alarm. Power to the components in the box is disconnected when the box is opened and ventilation openings to the box are closed when the box is closed.Type: ApplicationFiled: October 1, 2013Publication date: June 5, 2014Inventors: Cary R. Murphy, Mark K. Bridges, Joseph Giovannini, David Thompson, David E. Vokey
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Publication number: 20140091929Abstract: A fiber optic network has alarmed fiber optic lines in the cables connecting a secured junction box to plural user lock boxes. An outgoing alarm line and return alarm line in each cable connect the junction box to each user box. The outgoing alarm line is looped to the return alarm line inside the user lock box. The return alarm line is looped to the outgoing alarm line of a different cable inside the junction box to interconnect a plurality of alarm lines passing through a plurality of user boxes. A detector detects an alarm signal in the connected alarm lines to trigger an intrusion alarm.Type: ApplicationFiled: October 1, 2012Publication date: April 3, 2014Inventors: Cary Murphy, Mark K. Bridges, Joseph Giovannini, David E Vokey, David J Thompson, Robert J Murphy