Patents by Inventor David O'Hara

David O'Hara 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: 20200196863
    Abstract: An ophthalmic imaging system has a specialized graphical user interface GUI to convey information for manually adjusting control inputs to bring an eye into alignment with the device. The GUI provides additional information such as laterality, visual alignment overlay aids, and live video feeds. The system further applies automatic gain control to fundus images, synchronizes itself with other ophthalmic systems on a computer network, and provides an optimized image load and display system.
    Type: Application
    Filed: August 10, 2018
    Publication date: June 25, 2020
    Applicants: Carl Zeiss Meditec, Inc., Carl Zeiss Meditec AG, Carl Zeiss Meditec AG
    Inventors: Gregory ANDERSON, Muzammil ARAIN, Keith BROCK, Scott CHANG, Matthew J. EVERETT, Zubir KHAN, Archana KOLLI, Priya KULKARNI, Benjamin KWOK, Conor LEAHY, Gary LEE, Jennifer LUU, Pranav MALVANIA, David NOLAN, Keith O'HARA, Sunny VIRMANI, Richard ORLOWSKI
  • Publication number: 20200085294
    Abstract: Ophthalmic imaging systems, particularly slit-scanning ophthalmo-scopes, are capable of characterizing refraction over the entire field of view of the system. Light from the light source of the system illuminates a region of the eye and the returning light is measured on a detector. The deviation of the location of the returning light from a predetermined location on the detector is measured. The deviation corresponds to the mismatch between the refractions of the imaging system and the eye. The light can be scanned across the full field of view to characterize the entire field. A second illumination source traveling along a second illumination path can be used to improve the characterization. The characterization can be of use for optimizing the focus of the instrument and for assessing the condition of the eye, including assessing myopia and astigmatism in the periphery.
    Type: Application
    Filed: March 29, 2018
    Publication date: March 19, 2020
    Inventors: Matthew J. EVERETT, Alexandre R. TUMLINSON, David J. NOLAN, Conor LEAHY, Keith O'HARA
  • Patent number: 10367713
    Abstract: A system and method for receiving a data packet in a cable network testing device from a remotely located cloud host service/device. The data packet contains selected cable test device configuration instructions. The selected device instructions, once implemented in a cable test device, configure the cable test device to perform one or more cable network testing procedures in accordance with predetermined testing parameters. The cloud host service/device contains a plurality of test device configuration instructions to be selected by a user, which user may be remote from the cable test device.
    Type: Grant
    Filed: October 15, 2015
    Date of Patent: July 30, 2019
    Assignee: Fluke Corporation
    Inventors: David E. Bezold, Steve O' Hara
  • Publication number: 20190230095
    Abstract: A method comprises receiving, at a network infrastructure device, a flow of packets, determining, using the network infrastructure device and for a first subset of the packets, that the first subset corresponds to a first datagram and determining a first length of the first datagram, determining, using the network infrastructure device and for a second subset of the packets, that the second subset corresponds to a second datagram that was received after the first datagram, and determining a second length of the second datagram, determining, using the network infrastructure device, a duration value between a first arrival time of the first datagram and a second arrival time of the second datagram, sending, to a collector device that is separate from the network infrastructure device, the first length, the second length, and the duration value for analysis.
    Type: Application
    Filed: March 29, 2019
    Publication date: July 25, 2019
    Inventors: DAVID MCGREW, ANDREW ZAWADOWSKIY, DONOVAN O'HARA, SARAVANAN RADHAKRISHNAN, TOMAS PEVNY, DANIEL G. WING
  • Patent number: 10305928
    Abstract: A method comprises receiving, at a network infrastructure device, a flow of packets, determining, using the network infrastructure device and for a first subset of the packets, that the first subset corresponds to a first datagram and determining a first length of the first datagram, determining, using the network infrastructure device and for a second subset of the packets, that the second subset corresponds to a second datagram that was received after the first datagram, and determining a second length of the second datagram, determining, using the network infrastructure device, a duration value between a first arrival time of the first datagram and a second arrival time of the second datagram, sending, to a collector device that is separate from the network infrastructure device, the first length, the second length, and the duration value for analysis.
    Type: Grant
    Filed: August 6, 2015
    Date of Patent: May 28, 2019
    Assignee: Cisco Technology, Inc.
    Inventors: David McGrew, Andrew Zawadowskiy, Donovan O'Hara, Saravanan Radhakrishnan, Tomas Pevny, Daniel G. Wing
  • Publication number: 20120121774
    Abstract: A system for coating to tablets or other articles includes an elongate pan for retaining a bed of articles, a coating discharge system comprising a plurality of individually-controlled spray zones located linearly along said pan, and a means for distributing said articles along the pan wherein the full surface of all of said articles is exposed to said spray. A controller is programmed to operate the system to initiate a batch mode start-up sequence to coat an initial load of articles, a continuous, or a shut-down sequence, by controlling the dispensing of coating fluid on a zonal basis, and optionally controlling the distribution of articles in the pan and their discharge by controlling the effective height of a weir and the degree of tilt of the system.
    Type: Application
    Filed: November 12, 2010
    Publication date: May 17, 2012
    Inventors: James Marjeram, David O'Hara
  • Publication number: 20120012052
    Abstract: A system for coating tablets and other small articles is provided, comprising a housing, a drum or other pan within said housing for retaining a bed of coatable articles, and a coating dispenser for dispensing coating from a source onto the bed. The dispenser includes an extendible support member and opposing spray assemblies in end to end linear relation overhead of the pan. The spray assemblies include an elongate nozzle support, an array of spray nozzles mounted to the nozzle support for connection to a source of pressurized coating fluid and optionally to a source of compressed air, and an arm at an end of the nozzle support connecting the nozzle support to the extendible support member. The support member is extendible in length to permit retraction of at least one of the assemblies independently of the other assembly.
    Type: Application
    Filed: July 25, 2011
    Publication date: January 19, 2012
    Applicant: O'Hara Technologies Inc.
    Inventors: David O'Hara, James Marjeram
  • Publication number: 20120015101
    Abstract: A system for coating tablets and other small articles is provided. The system is comprised of an elongate housing containing a drum journalled for rotation about a horizontal axis. The drum has two open ends that receive and discharge a supply of tablets respectively. The drum is rotated about the axis by a drive means to tumble the tablets and advance the tablets through the drum. The system also includes a system for delivering a selected amount of coating to the tablets while they are being tumbled and a feeder for continually feeding tablets at a first end of the housing. The system employs a weir plate for maintaining a depth of tablets within the drum and for controlling the time that the tablets remain in the drum. The system has a tablet discharge region for receiving tablets for discharge.
    Type: Application
    Filed: July 25, 2011
    Publication date: January 19, 2012
    Applicant: O'Hara Technologies Inc.
    Inventors: David O'Hara, James Marjeram
  • Patent number: 8015937
    Abstract: A system for coating tablets and other small articles is provided. The system is comprised of an elongate housing containing a drum journalled for rotation about a horizontal axis. The drum has two open ends that receive and discharge a supply of tablets respectively. The drum is rotated about the axis by a drive means to tumble the tablets and advance the tablets through the drum. The system also includes a system for delivering a selected amount of coating to the tablets while they are being tumbled and a feeder for continually feeding tablets at a first end of the housing. The system employs a weir plate for maintaining a depth of tablets within the drum and for controlling the time that the tablets remain in the drum. Finally, the system has a tablet discharge region for receiving tablets for discharge.
    Type: Grant
    Filed: April 12, 2006
    Date of Patent: September 13, 2011
    Assignee: O'Hara Technologies Inc.
    Inventors: David O'Hara, James Marjeram
  • Patent number: 7876883
    Abstract: A conical anode X-ray source with a spot size approximately one tenth of the size of existing mammography devices. The source produces the same or higher radiance than the prior art. It also produces almost no high-energy Bremstrahlung. The electron beam is directed into a conical anode so that it strikes the reflecting surface at an angle which produces total internal reflection. The X-rays emitted via the reflection would ordinarily exit the small end of the conical anode in a diverging conical pattern—producing an undesirable “ring” configuration at the image plane. A homogenizing optic is therefore preferably added to the small end of the conical anode. The homogenizing optic is sized to reflect the X-rays emerging from the conical anode and thereby create a uniform “spot” source at the far end of the homogenizing optic.
    Type: Grant
    Filed: April 10, 2009
    Date of Patent: January 25, 2011
    Inventor: David O'Hara
  • Publication number: 20100126660
    Abstract: A method of making graphene sheets having a desired thickness. The method starts with Highly Oriented Pyrolytic Graphite (“HOPG”). A plurality of graphene layers are pulled off of the HOPG and attached to a substrate. An adhesive device is then used to pull a selected number of graphene layers off of the HOPG sample attached to the substrate. The number of layers selected determines the thickness of the graphene sheet produced. The graphene sheet has many applications. It is particularly suitable as an X-ray window.
    Type: Application
    Filed: October 30, 2009
    Publication date: May 27, 2010
    Inventor: David O'Hara
  • Publication number: 20090257562
    Abstract: A conical anode X-ray source with a spot size approximately one tenth of the size of existing mammography devices. The source produces the same or higher radiance than the prior art. It also produces almost no high-energy Bremstrahlung. The electron beam is directed into a conical anode so that it strikes the reflecting surface at an angle which produces total internal reflection. The X-rays emitted via the reflection would ordinarily exit the small end of the conical anode in a diverging conical pattern—producing an undesirable “ring” configuration at the image plane. A homogenizing optic is therefore preferably added to the small end of the conical anode. The homogenizing optic is sized to reflect the X-rays emerging from the conical anode and thereby create a uniform “spot” source at the far end of the homogenizing optic.
    Type: Application
    Filed: April 10, 2009
    Publication date: October 15, 2009
    Inventor: David O'Hara
  • Publication number: 20090252294
    Abstract: An X-ray spectrometer that collects a very large solid angle of emitted X-rays from a sample but “views” only a narrow portion of the X-rays at a time. The invention uses a moving detector, which moves along the optical axis, to count or collect X-rays from within narrow wavelength regions.
    Type: Application
    Filed: March 31, 2009
    Publication date: October 8, 2009
    Inventor: David O'Hara
  • Publication number: 20080193632
    Abstract: A system for coating tablets and other small articles is provided. The system is comprised of an elongate housing containing a drum journalled for rotation about a horizontal axis. The drum has two open ends that receive and discharge a supply of tablets respectively. The drum is rotated about the axis by a drive means to tumble the tablets and advance the tablets through the drum. The system also includes a system for delivering a selected amount of coating to the tablets while they are being tumbled and a feeder for continually feeding tablets at a first end of the housing. The system employs a weir plate for maintaining a depth of tablets within the drum and for controlling the time that the tablets remain in the drum. Finally, the system has a tablet discharge region for receiving tablets for discharge.
    Type: Application
    Filed: April 12, 2006
    Publication date: August 14, 2008
    Inventors: David O'Hara, James Marjeram
  • Patent number: 7412030
    Abstract: An apparatus directing x-rays along a predetermined axis includes an x-ray optic having one or more nested x-ray reflector rings positioned relative to a source generating broad spectrum x-rays so that generated x-rays moving away from the predetermined axis are collected by the reflector incident at or close to a Bragg angle to thereby reflect the collected x-rays into a conically parallel beam. A first diffractor is positioned relative to the x-ray optic to receive incident thereon the conically parallel beam, the first diffractor selected from a truncated cone and a cylinder and diffracting the conically parallel beam toward the predetermined axis. A second diffractor is positioned relative to the first diffractor and having a geometry effective to receive incident thereon and redirect the conically parallel beam along the predetermined axis as a collimated beam of substantially parallel x-rays.
    Type: Grant
    Filed: March 5, 2007
    Date of Patent: August 12, 2008
    Inventor: David O'Hara
  • Publication number: 20050152217
    Abstract: A mixing device for tablets includes a rotating drum including front and rear end walls, with the front end wall having a central mouth to receive and discharge the drum contents. One or more ribbon-like baffles are mounted to the inside surface of the front wall, with the baffle having a distal end which partly occludes the drum opening. The baffles are mounted at an angle such that when the drum is rotating in one direction they tend to direct the contents of the drum towards the opening of the drum to discharge the drum contents in a series of successive drum rotations, while when the drum is rotated in the opposite direction the baffles tend to direct the contents of the drum away from the drum opening. One or more curved ribs mounted to the inside surface of the drum body at an angle may be provided to cooperate in the tablet mixing and discharge phases.
    Type: Application
    Filed: March 15, 2004
    Publication date: July 14, 2005
    Inventor: David O'Hara
  • Patent number: 5912940
    Abstract: A combination wavelength and energy dispersive x-ray spectrometer comprising a point source of isotropic x-rays, a collimator to collect a large flux of x-rays and to redirect them into a substantially parallel beam, dispersing element means having a plurality of diffracting surfaces to reflect and diffract the parallel beam of x-rays into its component wavelength spectrum, controller means to alter the orientation of the dispersing element relative to the beam of x-rays, position tracking means to identify the orientation of the dispersing element and to provide data output, detector means to receive the reflected beam and to quantify its energy spectrum, wavelength spectrum and to provide data output, data display means to exhibit and record the output provided.
    Type: Grant
    Filed: June 9, 1997
    Date of Patent: June 15, 1999
    Inventor: David O'Hara