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  • Patent number: 9354136
    Abstract: A method and system for determination of multiple shrapnel hits on a gridless target surface utilizes multiple radio frequency or acoustic emission transducers on the target surface to detect energy waves created by the impact of shrapnel on the surface that occur at the point of initial contact and after the initial impact. Data regarding the detection, timing, and location of multiple impact events is acquired and transmitted to a remote processing location where the data is processed to determine the timing and location of all the shrapnel hits and derive final lethality information.
    Type: Grant
    Filed: July 10, 2014
    Date of Patent: May 31, 2016
    Assignee: INVOCON, INC.
    Inventors: Brian Philpot, Doug Heermann
  • Patent number: 8170836
    Abstract: A low-power triggered data acquisition system and method utilizes low-powered circuitry, comparators, and digital logic incorporated into a miniaturized device interfaced with self-generating transducer sensor inputs to detect, identify and assess impact and damage to surfaces and structures wherein, upon the occurrence of a triggering event that produces a signal greater than a set threshold changes the comparator output and causes the system to acquire and store digital data representative of the incoming waveform on at least one triggered channel. The sensors may be disposed in an array to provide triangulation and location of the impact.
    Type: Grant
    Filed: January 30, 2009
    Date of Patent: May 1, 2012
    Assignee: Invocon, Inc.
    Inventors: Kevin Champaigne, Jonathan Sumners
  • Patent number: 8307694
    Abstract: A hypervelocity impact detection method and system for determining the precise impact location in a detection surface, of impacts such as ballistic missile intercepts, micrometeoroids and orbital debris (MMOD) or other shock events, utilizes a gridless detection surface capable of propagating radio frequency (RF) impact detection signals responsive to receiving hypervelocity impacts from objects, and multiple sensors on the detection surface that directly measure radio frequency RF emissions generated by the hypervelocity impacts on the surface, and a time of arrival (TOA) position measurement technique for determining the precise impact location in the detection surface.
    Type: Grant
    Filed: November 7, 2009
    Date of Patent: November 13, 2012
    Assignee: Invocon, Inc.
    Inventors: Karl F. Kiefer, Doug Heermann, Eric Krug, Guinara Ajupova
  • Patent number: 8316690
    Abstract: A method and system for detecting hypervelocity impacts on a detection surface utilizes multiple sensors that directly measure electrical pulse radio frequency (RF) emissions generated by hypervelocity impacts on a detection surface and time of arrival (TOA) position measurements for determining the precise impact location on the detection surface. The detection surface material is compressed differentially in such a way that the inherent equalization of the compressed electron density in one area of the impact is directed to the uncompressed area of the material causing an electrical current that flows until the redistribution of the electrical charge has been completed and the rapid redistribution of charge and inherent current that results emits the radio frequency pulse that is induced into the detection surface.
    Type: Grant
    Filed: February 15, 2010
    Date of Patent: November 27, 2012
    Assignee: Invocon, Inc.
    Inventors: Karl F. Kiefer, Doug Heerman, Brian Philpot, Christopher DePalm, Gulnara Roberson, Eric Krug
  • Patent number: 7841989
    Abstract: A non-lethal and non-destructive electromagnetic personnel interdiction control stun type weapon system and method utilizes beamed radio frequency energy in a frequency range and modulated to impose a Lorentz force on the vestibular system or sensory cells of a remote human subject sufficient to disrupt the mechanical transduction process and/or the chemical engine by which sound, position and other sensory input are converted to messages by nerve cells and processed by the brain to produce complete disorientation, confusion, and incapacitation sufficient to temporarily render the subject powerless to resist arrest or subjugation. Removal of the electromagnetic energy leaves the nerve cells and surrounding tissues with no damage and second order effects of severe motion sickness and psychological effects of helplessness remains until the subject's body chemistry returns to normal.
    Type: Grant
    Filed: October 4, 2005
    Date of Patent: November 30, 2010
    Assignee: Invocon, Inc.
    Inventors: Karl F. Kiefer, Kevin Champaigne, Gulnara Ajupova
  • Patent number: 8279425
    Abstract: A system and method for performing lethality assessment utilizes frequency domain reflectometry (FDR) to determine impact point and damage propagation faults in a detection surface. The detection surface has a conductive layer capable of propagating radio frequency (RF) signals. At least one signal transmit/receive port on the detection surface injects a radio frequency (RF) interrogation signal into the detection surface and at least two signal receive-only ports on the detection surface spaced a distance apart from each other and from the signal transmit/receive port receive reflected radio frequency (RF) signals of the interrogation signal. A frequency domain reflectometry measurement system coupled with the transmit/receive port and signal receive-only ports measures frequency responses of the ports compared to predetermined baseline measurements and determines the precise location of an impact point and damage propagation fault in the detection surface by triangulation.
    Type: Grant
    Filed: March 18, 2009
    Date of Patent: October 2, 2012
    Assignee: Invocon, Inc.
    Inventors: Doug Heermann, Karl F. Kiefer
  • Publication number: 20180113095
    Abstract: A system and method is provided for detecting the trajectory of multiple fragments through a conic or cylindrical section, such as the body of a missile. Three or more sensors are placed on the on the body of the object. Each of the sensors is constructed and arranged to measure signals to the sensor at from impacts on one or more locations on the body. The sensor then transmits a signal commiserate with the impact of a fragment thereon. A computer system is also provided to perform necessary calculations and, potentially, record the impact times and locations. When the body of the object is hit by fragments or shrapnel, a signal from one or more of the sensors is sent to the computer system. This operation is performed and constantly updated for all locations where a fragment is detected by one or more of the sensors. Waveforms of the impacts are recorded, but because multiple hits can occur, there can be superposition (or destruction) of the resulting waveform sent to the computer system.
    Type: Application
    Filed: October 10, 2017
    Publication date: April 26, 2018
    Applicant: Invocon, Inc.
    Inventors: Donald L. Chaffee, Douglas A. Heermann, Brian D. Philpot
  • Patent number: 10677758
    Abstract: A system and method is provided for detecting the trajectory of multiple fragments through a conic or cylindrical section, such as the body of a missile. Three or more sensors are placed on the on the body of the object. Each of the sensors is constructed and arranged to measure signals to the sensor at from impacts on one or more locations on the body. The sensor then transmits a signal commiserate with the impact of a fragment thereon. A computer system is also provided to perform necessary calculations and, potentially, record the impact times and locations. When the body of the object is hit by fragments or shrapnel, a signal from one or more of the sensors is sent to the computer system. This operation is performed and constantly updated for all locations where a fragment is detected by one or more of the sensors. Waveforms of the impacts are recorded, but because multiple hits can occur, there can be superposition (or destruction) of the resulting waveform sent to the computer system.
    Type: Grant
    Filed: October 10, 2017
    Date of Patent: June 9, 2020
    Assignee: Invocon, Inc.
    Inventors: Donald L. Chaffee, Douglas A. Heermann, Brian D. Philpot
  • Patent number: 6810750
    Abstract: A passive SAW strain sensor for remotely sensing strain within a surface has a receiving SAW correlator with a signal input interdigitated transducer and a plurality of adjacent successive spaced interdigitated output transducers on a piezoelectric substrate, and a transmitting SAW correlator having a plurality of adjacent successive spaced interdigitated output transducers and a signal output interdigitated transducer on a piezoelectric substrate. The transmitting SAW correlator is affixed to or embedded in the surface such that its substrate will be stressed when the surface is strained and the receiving SAW correlator is not affixed to or embedded in the surface. The output transducers of the receiving SAW correlator and the transmitting SAW correlator are spatially placed to define a unique frequency of sensitivity, and their outputs are coupled together.
    Type: Grant
    Filed: March 20, 2003
    Date of Patent: November 2, 2004
    Assignee: Invocon, Inc.
    Inventors: Karl F. Kiefer, Kevin Champaigne, Eric Krug, Gulnara Ajupova
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