Patents by Inventor Lloyd A. Hackel

Lloyd A. Hackel 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).

  • Publication number: 20160298203
    Abstract: Metal components subject to wear or contact fatigue in a first area, and subject to bending, axial and/or torsional stress loading in a second area comprise a surface hardened, first surface layer in the first area; and a surface compressive-stress treated, second surface layer in the second area. The second surface layer has a material hardness different from, and typically lower than the first surface layer, and induced residual compressive stress to improve fatigue strength. Example components described include a gear, a cog, a pinion, a rack, a splined shaft, a splined coupling, a torqueing tool and a nut driving tool. A hybrid manufacturing process is described, including area-selective surface hardening combined with a process to add compressive stress to fatigue failure prone areas.
    Type: Application
    Filed: April 8, 2016
    Publication date: October 13, 2016
    Applicant: METAL IMPROVEMENT COMPANY, LLC
    Inventor: LLOYD A. HACKEL
  • Patent number: 9409254
    Abstract: A hybrid ablation layer that comprises a separate under layer is applied to a material to prevent pitting resulting from laser peening. The underlayer adheres to the surface of the workpiece to be peened and does not have bubbles and voids that exceed an acceptable size. One or more overlayers are placed over and in contact with the underlayer. Any bubbles formed under the over layers are insulated from the surface to be peened. The process significantly reduces the incidence of pits on peened surfaces.
    Type: Grant
    Filed: September 30, 2005
    Date of Patent: August 9, 2016
    Assignee: Lawrence Livermore National Security, LLC
    Inventor: Lloyd A. Hackel
  • Patent number: 9192056
    Abstract: A technique for bonding two dissimilar materials includes positioning a second material over a first material at an oblique angle and applying a tamping layer over the second martial. A laser beam is directed at the second material that generates a plasma at the location of impact on the second material. The plasma generates pressure that accelerates a portion of the second material to a very high velocity and towards the first material. The second material impacts the first material causing bonding of the two materials.
    Type: Grant
    Filed: September 12, 2011
    Date of Patent: November 17, 2015
    Assignee: Lawrence Livermore National Security, LLC
    Inventors: Alexander M. Rubenchik, Joseph C. Farmer, Lloyd Hackel, Jon Rankin
  • Patent number: 8608590
    Abstract: A method of manufacturing a driver, or other types of golf club, includes inducing residual compressive stress by high intensity laser shock peening to form an array of laser shock peened impact zones on the club face. Laser pulses having irradiance greater than 4 GW/cm2, with spot size greater than 4 mm2 are used, including a pulse with on the order of 16 ns, with spot size greater than 9 mm2. Residual compressive stress of more than 400 MPa penetrating with a depth of more than 0.2 mm are imparted, without increased hardening in or damage to the face of the club. Laser shock peening a pattern that covers an interior area leaves the perimeter unpeened, inducing a stress gradient between interior area and the perimeter of the club face. Multiple layers of arrays of laser shock impact zones are applied on the club. The technology is readily applied to assembled club heads.
    Type: Grant
    Filed: June 14, 2007
    Date of Patent: December 17, 2013
    Assignee: Metal Improvement Company, LLC
    Inventors: Lloyd A. Hackel, Jon Rankin, Chanh H. Truong, C. Brent Dane, Fritz B. Harris, Jr.
  • Publication number: 20130064993
    Abstract: A technique for bonding two dissimilar materials includes positioning a second material over a first material at an oblique angle and applying a tamping layer over the second martial. A laser beam is directed at the second material that generates a plasma at the location of impact on the second material. The plasma generates pressure that accelerates a portion of the second material to a very high velocity and towards the first material. The second material impacts the first material causing bonding of the two materials.
    Type: Application
    Filed: September 12, 2011
    Publication date: March 14, 2013
    Applicant: LAWRENCE LIVERMORE NATIONAL SECURITY, LLC
    Inventors: Alexander M. Rubenchik, Joseph C. Farmer, Lloyd Hackel, Jon Rankin
  • Patent number: 8339580
    Abstract: A countermeasure system for use by a target to protect against an incoming sensor-guided threat. The system includes a laser system for producing a broadband beam and means for directing the broadband beam from the target to the threat. The countermeasure system comprises the steps of producing a broadband beam and directing the broad band beam from the target to blind or confuse the incoming sensor-guided threat.
    Type: Grant
    Filed: June 30, 2004
    Date of Patent: December 25, 2012
    Assignee: Lawrence Livermore National Security, LLC
    Inventors: Brent C. Stuart, Lloyd A. Hackel, Mark R. Hermann, James P. Armstrong
  • Patent number: 8207474
    Abstract: A method of operating a laser to obtain an output pulse having a single wavelength, comprises inducing an intracavity loss into a laser resonator having an amount that prevents oscillation during a time that energy from the pump source is being stored in the gain medium. Gain is built up in the gain medium with energy from the pump source until formation of a single-frequency relaxation oscillation pulse in the resonator. Upon detection of the onset of the relaxation oscillation pulse, the intracavity loss is reduced, such as by Q-switching, so that the built-up gain stored in the gain medium is output from the resonator in the form of an output pulse at a single frequency. An electronically controllable output coupler is controlled to affect output pulse characteristics. The laser acts a master oscillator in a master oscillator power amplifier configuration. The laser is used for laser peening.
    Type: Grant
    Filed: July 21, 2009
    Date of Patent: June 26, 2012
    Assignees: Metal Improvement Company, LLC, Regents of the University of California, Lawrence Livermore National Security, LLC
    Inventors: C. Brent Dane, Lloyd A. Hackel, Fritz B. Harris
  • Patent number: 8009283
    Abstract: Wavefront control techniques are provided for the alignment and performance optimization of optical devices. A Shack-Hartmann wavefront sensor can be used to measure the wavefront distortion and a control system generates feedback error signal to optics inside the device to correct the wavefront. The system can be calibrated with a low-average-power probe laser. An optical element is provided to couple the optical device to a diagnostic/control package in a way that optimizes both the output power of the optical device and the coupling of the probe light into the diagnostics.
    Type: Grant
    Filed: May 25, 2009
    Date of Patent: August 30, 2011
    Assignee: Lawrence Livermore National Security, LLC
    Inventors: Kai N LaFortune, Randall Hurd, Scott N Fochs, Mark D Rotter, Lloyd Hackel
  • Patent number: 7960671
    Abstract: A method for laser shock processing a device, including a metallic body having a surface, comprises conformally applying a compliant solid material to the first region on the surface of the metallic body and applying a layer of ablative material to the second region on the surface of the metallic body. A damping liquid is flowed over the layer of ablative material. An array of pulses of laser energy is directed through the damping fluid to impact the layer of ablative material on the surface and peen the surface in the second region. The pulses induce pressure waves within the metallic body which propagate to the surface in the first region. The compliant solid material acts as a momentum trap, so that the acoustic waves are at least partially coupled into the compliant solid material and attenuated outside of the metallic body.
    Type: Grant
    Filed: December 7, 2006
    Date of Patent: June 14, 2011
    Assignee: Metal Improvement Company LLC
    Inventors: C. Brent Dane, Lloyd Hackel, Fritz B. Harris, Chanh H. Truong, James D. Wintemute
  • Publication number: 20110045922
    Abstract: A method of manufacturing a driver, or other types of golf club, includes inducing residual compressive stress by high intensity laser shock peening to form an array of laser shock peened impact zones on the club face. Laser pulses having fluence greater than 4 GW/cm2, with spot size greater than 4 mm are used, including a pulse with on the order of 16 ns, with spot size greater than 9 mm2. Residual compressive stress of more than 400 MPa penetrating with a depth of more than 0.2 mm are imparted, without increased hardening in or damage to the face of the club. Laser shock peening a pattern that covers an interior area leaves the perimeter unpeened, inducing a stress gradient between interior area and the perimeter of the club face. Multiple layers of arrays of laser shock impact zones are applied on the club. The technology is readily applied to assembled club heads.
    Type: Application
    Filed: June 14, 2007
    Publication date: February 24, 2011
    Applicant: METAL IMPROVEMENT COMPANY, LLC
    Inventors: Lloyd A. Hackel, Jon Rankin, Chanh H. Truong, C. Brent Dane, Fritz B. Harris, JR.
  • Patent number: 7894496
    Abstract: A novel method and apparatus for suppressing ASE and/or parasitic oscillation modes in a laser is introduced. By roughening one or more peripheral edges of a solid-state crystal or ceramic laser gain media and by bonding such edges to a predetermined electromagnetic absorbing material arranged adjacent to the entire outer surface of the peripheral edges of the roughened laser gain media, ASE, parasitic oscillation modes and/or residual pump energy can be effectively suppressed.
    Type: Grant
    Filed: November 5, 2008
    Date of Patent: February 22, 2011
    Assignee: Lawrence Livermore National Security, LLC
    Inventors: Lloyd A. Hackel, Thomas F. Soules, Scott N. Fochs, Mark D. Rotter, Stephan A. Letts
  • Patent number: 7723643
    Abstract: A laser peening process for the densification of metal surfaces and sub-layers and for changing surface chemical activities provides retardation of the up-take and penetration of atoms and molecules, particularly Hydrogen, which improves the lifetime of such laser peened metals. Penetration of hydrogen into metals initiates an embrittlement that leaves the material susceptible to cracking.
    Type: Grant
    Filed: April 6, 2006
    Date of Patent: May 25, 2010
    Assignees: Lawrence Livermore National Security, LLC, University of California
    Inventors: Lloyd A. Hackel, Tania M. Zaleski, Hao-Lin Chen, Michael R. Hill, Kevin K. Liu
  • Publication number: 20100097602
    Abstract: Wavefront control techniques are provided for the alignment and performance optimization of optical devices. A Shack-Hartmann wavefront sensor can be used to measure the wavefront distortion and a control system generates feedback error signal to optics inside the device to correct the wavefront. The system can be calibrated with a low-average-power probe laser. An optical element is provided to couple the optical device to a diagnostic/control package in a way that optimizes both the output power of the optical device and the coupling of the probe light into the diagnostics.
    Type: Application
    Filed: May 25, 2009
    Publication date: April 22, 2010
    Inventors: Kai N. LaFortune, Randall Hurd, Scott N. Fochs, Mark D. Rotter, Lloyd Hackel
  • Publication number: 20090294424
    Abstract: A method of operating a laser to obtain an output pulse having a single wavelength, comprises inducing an intracavity loss into a laser resonator having an amount that prevents oscillation during a time that energy from the pump source is being stored in the gain medium. Gain is built up in the gain medium with energy from the pump source until formation of a single-frequency relaxation oscillation pulse in the resonator. Upon detection of the onset of the relaxation oscillation pulse, the intracavity loss is reduced, such as by Q-switching, so that the built-up gain stored in the gain medium is output from the resonator in the form of an output pulse at a single frequency. An electronically controllable output coupler is controlled to affect output pulse characteristics. The laser acts a master oscillator in a master oscillator power amplifier configuration. The laser is used for laser peening.
    Type: Application
    Filed: July 21, 2009
    Publication date: December 3, 2009
    Applicants: The Regents of the University of California, Metal Improvement Company, LLC
    Inventors: C. Brent Dane, Lloyd Hackel, Fritz Harris
  • Patent number: 7573001
    Abstract: A method of operating a laser to obtain an output pulse having a single wavelength, comprises inducing an intracavity loss into a laser resonator having an amount that prevents oscillation during a time that energy from the pump source is being stored in the gain medium. Gain is built up in the gain medium with energy from the pump source until formation of a single-frequency relaxation oscillation pulse in the resonator. Upon detection of the onset of the relaxation oscillation pulse, the intracavity loss is reduced, such as by Q-switching, so that the built-up gain stored in the gain medium is output from the resonator in the form of an output pulse at a single frequency. An electronically controllable output coupler is controlled to affect output pulse characteristics. The laser acts a master oscillator in a master oscillator power amplifier configuration. The laser is used for laser peening.
    Type: Grant
    Filed: October 26, 2005
    Date of Patent: August 11, 2009
    Assignees: Metal Improvement Company, LLC, Lawrence Livermore National Security LLC
    Inventors: C. Brent Dane, Lloyd Hackel, Fritz B. Harris
  • Publication number: 20090059977
    Abstract: A novel method and apparatus for suppressing ASE and/or parasitic oscillation modes in a laser is introduced. By roughening one or more peripheral edges of a solid-state crystal or ceramic laser gain media and by bonding such edges to a predetermined electromagnetic absorbing material arranged adjacent to the entire outer surface of the peripheral edges of the roughened laser gain media, ASE, parasitic oscillation modes and/or residual pump energy can be effectively suppressed.
    Type: Application
    Filed: November 5, 2008
    Publication date: March 5, 2009
    Inventors: Lloyd A. Hackel, Thomas F. Soules, Scott N. Fochs, Mark D. Rotter, Stephan A. Letts
  • Patent number: 7463660
    Abstract: A novel method and apparatus for suppressing ASE and parasitic oscillation modes in a high average power laser is introduced. By roughening one or more peripheral edges of a solid-state crystal or ceramic laser gain media and by bonding such edges using a substantially high index bonding elastomer or epoxy to a predetermined electromagnetic absorbing arranged adjacent to the entire outer surface of the peripheral edges of the roughened laser gain media, ASE and parasitic oscillation modes can be effectively suppressed.
    Type: Grant
    Filed: November 8, 2004
    Date of Patent: December 9, 2008
    Assignee: Lawrence Livermore National Laboratory, LLC
    Inventors: Lloyd A. Hackel, Thomas F. Soules, Scott N. Fochs, Mark D. Rotter, Stephan A. Letts
  • Patent number: 7291805
    Abstract: A system for applying a laser beam to work pieces, includes a laser system producing a high power output beam. Target delivery optics are arranged to deliver the output beam to a target work piece. A relay telescope having a telescope focal point is placed in the beam path between the laser system and the target delivery optics. The relay telescope relays an image between an image location near the output of the laser system and an image location near the target delivery optics. A baffle is placed at the telescope focal point between the target delivery optics and the laser system to block reflections from the target in the target delivery optics from returning to the laser system and causing damage.
    Type: Grant
    Filed: February 27, 2004
    Date of Patent: November 6, 2007
    Assignees: The Regents of the University of California, Metal Improvement Company, Inc.
    Inventors: C. Brent Dane, Lloyd A. Hackel, Fritz Harris
  • Patent number: 7286580
    Abstract: A laser system, such as a master oscillator/power amplifier system, comprises a gain medium and a stimulated Brillouin scattering SBS mirror system. The SBS mirror system includes an in situ filtered SBS medium that comprises a compound having a small negative non-linear index of refraction, such as a perfluoro compound. An SBS relay telescope having a telescope focal point includes a baffle at the telescope focal point which blocks off angle beams. A beam splitter is placed between the SBS mirror system and the SBS relay telescope, directing a fraction of the beam to an alternate beam path for an alignment fiducial. The SBS mirror system has a collimated SBS cell and a focused SBS cell. An adjustable attenuator is placed between the collimated SBS cell and the focused SBS cell, by which pulse width of the reflected beam can be adjusted.
    Type: Grant
    Filed: May 15, 2006
    Date of Patent: October 23, 2007
    Assignees: The Regents of the University of California, Metal Improvement Company, Inc.
    Inventors: C. Brent Dane, Lloyd Hackel, Fritz B. Harris
  • Publication number: 20070221641
    Abstract: A laser peening process for the densification of metal surfaces and sub-layers and for changing surface chemical activities provides retardation of the up-take and penetration of atoms and molecules, particularly Hydrogen, which improves the lifetime of such laser peened metals. Penetration of hydrogen into metals initiates an embrittlement that leaves the material susceptible to cracking.
    Type: Application
    Filed: April 6, 2006
    Publication date: September 27, 2007
    Inventors: Lloyd Hackel, Tania Zaleski, Hao-Lin Chen, Michael Hill, Kevin Liu