Patents by Inventor Daniel W. Wilson
Daniel W. Wilson 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: 11946722Abstract: A detector for detecting the removal and/or insertion of a weapon out of and/or into a holster. The detector may transmit a message each time the weapon is removed from the holster. A recording system may receive the message and determine whether or not it will begin recording the data it captures. A detector may detect the change in a magnitude of an inductance and/or an impedance of a circuit to detect insertion and removal of the weapon into and out of the holster. The holster is configured to couple to the detector to position the detector to detect insertion and removal of the weapon. An adhesive tape may couple a detector to a holster.Type: GrantFiled: May 2, 2023Date of Patent: April 2, 2024Assignee: Axon Enterprise, Inc.Inventors: Daniel Joseph Wagner, Nache D. Shekarri, Jonathan R. Hatcher, John W. Wilson, Andrew G. Terajewicz, Lucas Kraft, Brian Piquette, Zachary B. Williams, Elliot William Weber, Jason W. Haensly
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Patent number: 10384810Abstract: Micro-emitter arrays and methods of microfabricating such emitter arrays are provided. The microfabricated emitter arrays incorporate a plurality of emitters with heights greater than 280 microns with uniformity of +/?10 microns arranged on a supporting silicon substrate, each emitter comprising an elongated body extending from the top surface of the substrate and incorporating at least one emitter tip on the distal end of the elongated body thereof. The emitters may be disposed on the substrate in an ordered array in an X by Y grid pattern, wherein X and Y can be any number greater than zero. The micro-emitter arrays may utilize a LMIS propellant source including, for example, gallium, indium, bismuth, or tin. The substrate may incorporate at least one through-via providing a fluid pathway for the LMIS propellant to flow from a propellant reservoir beneath the substrate to the top substrate surface whereupon the micro-emitter array is disposed.Type: GrantFiled: July 15, 2015Date of Patent: August 20, 2019Assignee: California Institute of TechnologyInventors: Cecile Jung-Kubiak, Colleen M. Marrese-Reading, Victor E. White, Daniel W. Wilson, Matthew R. Dickie, Karl Y. Yee, Richard E. Muller, James E. Polk, John R. Anderson, Nima Rouhi, Frank Greer
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Publication number: 20180201395Abstract: Micro-emitter arrays and methods of microfabricating such emitter arrays are provided. The microfabricated emitter arrays incorporate a plurality of emitters with heights greater than 280 microns with uniformity of +/?10 microns arranged on a supporting silicon substrate, each emitter comprising an elongated body extending from the top surface of the substrate and incorporating at least one emitter tip on the distal end of the elongated body thereof. The emitters may be disposed on the substrate in an ordered array in an X by Y grid pattern, wherein X and Y can be any number greater than zero. The micro-emitter arrays may utilize a LMIS propellant source including, for example, gallium, indium, bismuth, or tin. The substrate may incorporate at least one through-via providing a fluid pathway for the LMIS propellant to flow from a propellant reservoir beneath the substrate to the top substrate surface whereupon the micro-emitter array is disposed.Type: ApplicationFiled: July 15, 2015Publication date: July 19, 2018Applicant: California Institute of TechnologyInventors: Cecile Jung-Kubiak, Colleen M. Marrese-Reading, Victor E. White, Daniel W. Wilson, Matthew R. Dickie, Karl Y. Yee, Richard E. Muller, James E. Polk, John R. Anderson, Nima Rouhi, Frank Greer
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Publication number: 20110176577Abstract: A multi-waveband temperature sensor array, in which each superpixel (e.g., 2×2 pixel cell) operates at a distinct thermal infrared (IR) waveband (e.g. four wavebands) is disclosed. Using an example high spatial resolution, four-band thermal IR band photodetector array, accurate temperature measurements on the surface of an object can be made without prior knowledge of the object emissivity. The multiband photodetector may employ intersubband transition in III-V semiconductor-based quantum layered structures where each photodetector stack absorbs photons within the specified wavelength band while allowing the transmission of photons in other spectral bands, thus efficiently permitting multiband detection. This produces multiple, spectrally resolved images of a scene that are recorded simultaneously in a single snapshot of the FPA. From the multispectral images and calibration information about the system, computational algorithms are used to produce the surface temperature map of a target.Type: ApplicationFiled: December 8, 2009Publication date: July 21, 2011Applicant: California Institute of TechnologyInventors: Sumith V. Bandara, Sarath D. Gunapala, John K. Liu, Robert C. Stirbl, Daniel W. Wilson, David Z. Ting
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Patent number: 7894058Abstract: Computed tomography imaging spectrometers (“CTISs”) employing a single lens are provided. The CTISs may be either transmissive or reflective, and the single lens is either configured to transmit and receive uncollimated light (in transmissive systems), or is configured to reflect and receive uncollimated light (in reflective systems). An exemplary transmissive CTIS includes a focal plane array detector, a single lens configured to transmit and receive uncollimated light, a two-dimensional grating, and a field stop aperture. An exemplary reflective CTIS includes a focal plane array detector, a single mirror configured to reflect and receive uncollimated light, a two-dimensional grating, and a field stop aperture.Type: GrantFiled: January 12, 2009Date of Patent: February 22, 2011Assignee: California Institute of TechnologyInventors: Daniel W. Wilson, William R. Johnson, Gregory H. Bearman
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Patent number: 7876434Abstract: Computed tomography imaging spectrometers (“CTIS”s) having color focal plane array detectors are provided. The color FPA detector may comprise a digital color camera including a digital image sensor, such as a Foveon X3® digital image sensor or a Bayer color filter mosaic. In another embodiment, the CTIS includes a pattern imposed either directly on the object scene being imaged or at the field stop aperture. The use of a color FPA detector and the pattern improves the accuracy of the captured spatial and spectral information.Type: GrantFiled: December 12, 2006Date of Patent: January 25, 2011Assignee: California Institute of TechnologyInventors: Daniel W. Wilson, Gregory H. Bearman, William R. Johnson
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Patent number: 7768641Abstract: Computed tomography imaging spectrometers (“CTIS”s) having patterns for imposing spatial structure are provided. The pattern may be imposed either directly on the object scene being imaged or at the field stop aperture. The use of the pattern improves the accuracy of the captured spatial and spectral information.Type: GrantFiled: January 24, 2007Date of Patent: August 3, 2010Assignee: California Institute of TechnologyInventors: Gregory H. Bearman, Daniel W. Wilson, William R. Johnson
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Publication number: 20090180115Abstract: Computed tomography imaging spectrometers (“CTISs”) employing a single lens are provided. The CTISs may be either transmissive or reflective, and the single lens is either configured to transmit and receive uncollimated light (in transmissive systems), or is configured to reflect and receive uncollimated light (in reflective systems). An exemplary transmissive CTIS includes a focal plane array detector, a single lens configured to transmit and receive uncollimated light, a two-dimensional grating, and a field stop aperture. An exemplary reflective CTIS includes a focal plane array detector, a single mirror configured to reflect and receive uncollimated light, a two-dimensional grating, and a field stop aperture.Type: ApplicationFiled: January 12, 2009Publication date: July 16, 2009Inventors: Daniel W. Wilson, William R. Johnson, Gregory H. Bearman
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Patent number: 7211820Abstract: Quantum-well sensors having an array of spatially separated quantum-well columns formed on a substrate. A grating can be formed increase the coupling efficiency.Type: GrantFiled: August 7, 2001Date of Patent: May 1, 2007Assignee: California Institute of TechnologyInventors: Sarath D. Gunapala, Sumith V. Bandara, John K. Liu, Daniel W. Wilson
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Patent number: 6717172Abstract: A diffractive optic sheer stress sensor operates by forming diverging fringes over a linear area of measurement. A diode laser focuses light onto a diffractive lens which focuses the light to respective slits. The slits form diverging fringes, and scattered light from the fringes is collected by a window and focused by another diffractive lens to a receiver.Type: GrantFiled: December 18, 2001Date of Patent: April 6, 2004Assignee: California Institute of TechnologyInventors: Morteza Gharib, Daniel W. Wilson, Siamak Forouhar, Richard E. Muller, Dominique Fourguette, Darius Modarress, Frederic Taugwalder
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Patent number: 6580503Abstract: An optical particle detection system produces an optical beam which is scattered by particles in a probe volume area. The particles may scatter the beam to the detector. The optical beam is a hollow shaped beam which may be circular/doughnut shaped, or made be of any other hollow shape. The particle passes across the beam, and those particles which pass through the center of the beam are detected as being desired particles to detect. This system may be used to detect particle concentration, and size. In addition, by producing an asymmetric beam, particle direction can also be detected.Type: GrantFiled: December 4, 2001Date of Patent: June 17, 2003Assignee: California Institute of TechnologyInventors: Morteza Gharib, Dominique Fourguette, Frederic Taugwalder, Daniel W. Wilson, Darius Modarress
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Patent number: 6522403Abstract: The optical system of this invention is an unique type of imaging spectrometer, i.e. an instrument that can determine the spectra of all points in a two-dimensional scene. The general type of imaging spectrometer under which this invention falls has been termed a computed-tomography imaging spectrometer (CTIS). CTIS's have the ability to perform spectral imaging of scenes containing rapidly moving objects or evolving features, hereafter referred to as transient scenes. This invention, a reflective CTIS with an unique two-dimensional reflective grating, can operate in any wavelength band from the ultraviolet through long-wave infrared. Although this spectrometer is especially useful for rapidly occurring events it is also useful for investigation of some slow moving phenomena as in the life sciences.Type: GrantFiled: December 4, 2000Date of Patent: February 18, 2003Assignee: The United States of America as represented by the Administrator of the National Aeronautics and Space AdministrationInventors: Daniel W. Wilson, Paul D. Maker, Richard E. Muller, Pantazis Z. Mouroulis
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Patent number: 6480333Abstract: The present disclosure describes a technique for creating diffraction gratings on curved surfaces with electron beam lithography. The curved surface can act as an optical element to produce flat and aberration-free images in imaging spectrometers. In addition, the fabrication technique can modify the power structure of the grating orders so that there is more energy in the first order than for a typical grating. The inventors noticed that by using electron-beam lithography techniques, a variety of convex gratings that are well-suited to the requirements of imaging spectrometers can be manufactured.Type: GrantFiled: November 18, 1998Date of Patent: November 12, 2002Assignee: California Institute of TechnologyInventors: Paul D. Maker, Richard E. Muller, Daniel W. Wilson
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Publication number: 20020162956Abstract: A diffractive optic sheer stress sensor operates by forming diverging fringes over a linear area of measurement. A diode laser focuses light onto a diffractive lens which focuses the light to respective slits. The slits form diverging fringes, and scattered light from the fringes is collected by a window and focused by another diffractive lens to a receiver.Type: ApplicationFiled: December 18, 2001Publication date: November 7, 2002Inventors: Morteza Gharib, Daniel W. Wilson, Siamak Forouhar, Richard E. Muller, Dominique Fourguette, Darius Modarress, Frederic Taugwalder
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Publication number: 20020113963Abstract: An optical particle detection system produces an optical beam which is scattered by particles in a probe volume area. The particles may scatter the beam to the detector. The optical beam is a hollow shaped beam which may be circular/doughnut shaped, or made be of any other hollow shape. The particle passes across the beam, and those particles which pass through the center of the beam are detected as being desired particles to detect. This system may be used to detect particle concentration, and size. In addition, by producing an asymmetric beam, particle direction can also be detected.Type: ApplicationFiled: December 4, 2001Publication date: August 22, 2002Inventors: Morteza Gharib, Dominique Fourguette, Frederic Taugwalder, Daniel W. Wilson, Darius Modarress
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Publication number: 20020101587Abstract: The optical system of this invention is an unique type of imaging spectrometer, i.e. an instrument that can determine the spectra of all points in a two-dimensional scene. The general type of imaging spectrometer under which this invention falls has been termed a computed-tomography imaging spectrometer (CTIS). CTIS's have the ability to perform spectral imaging of scenes containing rapidly moving objects or evolving features, hereafter referred to as transient scenes. This invention, a reflective CTIS with an unique two-dimensional reflective grating, can operate in any wavelength band from the ultraviolet through long-wave infrared. Although this spectrometer is especially useful for rapidly occurring events it is also useful for investigation of some slow moving phenomena as in the life sciences.Type: ApplicationFiled: December 4, 2000Publication date: August 1, 2002Applicant: National Aeronautics and Space AdministrationInventors: Daniel W. Wilson, Paul D. Maker, Richard E. Muller, Pantazis Z. Mouroulis
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Patent number: 6423980Abstract: Techniques for coupling radiation into a quantum-well detector by using a two-dimensional array of grating cells to form at least three different grating directions to provide efficient coupling.Type: GrantFiled: June 26, 2000Date of Patent: July 23, 2002Assignee: California Institute of TechnologyInventors: Daniel W. Wilson, John K. Liu, Sumith V. Bandara, Sarath D. Gunapala
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Publication number: 20020008232Abstract: Quantum-well sensors having an array of spatially separated quantum-well columns formed on a substrate. A grating can be formed increase the coupling efficiency.Type: ApplicationFiled: August 7, 2001Publication date: January 24, 2002Applicant: California Institute of TechnologyInventors: Sarath D. Gunapala, Sumith V. Bandara, John K. Liu, Daniel W. Wilson
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Patent number: 6271537Abstract: Quantum-well sensors having an array of spatially separated quantum-well columns formed on a substrate. A grating can be formed increase the coupling efficiency.Type: GrantFiled: November 19, 1999Date of Patent: August 7, 2001Assignee: California Institute of TechnologyInventors: Sarath D. Gunapala, Sumith V. Bandara, John K. Liu, Daniel W. Wilson
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Patent number: 4360949Abstract: A portable pneumatic cleaning device for removing particulate material from crevices and channels particularly between component parts of railroad switch mechanisms, is provided which has a heavy duty nozzle including a central port and a pair of outwardly divergent side ports having axes which are coplanar with the axis of the central port for discharging a pressurized stream of air in a generally fan-shaped pattern along a surface to be cleaned when the device is connected to a pressurized air source. The device has an elongated body portion and end portions formed at an angle therewith and parallel to one another, and includes a switch for controlling the flow of air therethrough, a runner to maintain the nozzle at a spaced distance from a surface to be cleaned, and a handle to facilitate manual use of the device.Type: GrantFiled: July 14, 1980Date of Patent: November 30, 1982Inventor: Daniel W. Wilson