Patents by Inventor David Crabb

David Crabb 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).

  • AUTONOMOUS MOBILE ROBOT FOR IN-HOSPITAL PATIENT TRANSPORT, INCLUDING STRETCHERS, HOSPITAL BEDS, COTS, PATIENT CARTS, AND GURNEYS
    Publication number: 20260115073
    Abstract: An autonomous robotic system and methods for transporting patient stretchers, hospital beds, gurneys, and other patient transport apparatuses are provided. The autonomous robotic system includes a mobile robot module including extendable arms configured to interface with wheels of patient apparatuses; a wheel engagement module configured for capturing, lifting, guiding, caging, steering, or pulling the wheels of the patient apparatuses; and a navigation module including LiDAR, computer vision, and/or other sensors to autonomously guide the mobile robot module within hospital environments.
    Type: Application
    Filed: March 18, 2025
    Publication date: April 30, 2026
    Inventors: David CRABB, Axton ISALY
  • Method and apparatus for performing a visual field test
    Patent number: 11723530
    Abstract: A method and apparatus are provided for measuring a sensitivity level across a visual field of a subject defined by a set of locations.
    Type: Grant
    Filed: August 10, 2017
    Date of Patent: August 15, 2023
    Assignee: UCL BUSINESS LTD
    Inventors: Haogang Zhu, David Garway-Heath, David Crabb, Marco Miranda
  • METHOD AND APPARATUS FOR PERFORMING A VISUAL FIELD TEST
    Publication number: 20200178789
    Abstract: A method and apparatus are provided for measuring a sensitivity level across a visual field of a subject defined by a set of locations.
    Type: Application
    Filed: August 10, 2017
    Publication date: June 11, 2020
    Applicant: UCL Business PLC
    Inventors: Haogang Zhu, David Garway-Heath, David Crabb, Marco Miranda
  • Supra-threshold test and a sub-pixel strategy for use in measurements across the field of vision
    Patent number: 9861276
    Abstract: One embodiment of the invention provides a method for performing a supra-threshold test of sensitivity across a visual field of a subject. The method includes presenting a stimulus at each location of a set of locations spread across the visual field and obtaining for each stimulus a result indicating whether or not the stimulus was seen by the subject. The method further includes determining for each location whether or not to re-present a stimulus at that location, wherein for a given location, the determining involves combining results obtained from multiple locations. These multiple locations are defined by a cluster associated with the given location, with the cluster being determined based on the paths of optic nerve fibre bundles across the visual field.
    Type: Grant
    Filed: May 5, 2011
    Date of Patent: January 9, 2018
    Assignee: UCL BUSINESS PLC
    Inventors: David Crabb, Ciara Bergin, David Garway-Heath, Gay Verdon-Roe, Mark Westcott
  • SUPRA-THRESHOLD TEST AND A SUB-PIXEL STRATEGY FOR USE IN MEASUREMENTS ACROSS THE FIELD OF VISION
    Publication number: 20130201452
    Abstract: One embodiment of the invention provides a method for performing a supra-threshold test of sensitivity across a visual field of a subject. The method includes presenting a stimulus at each location of a set of locations spread across the visual field and obtaining for each stimulus a result indicating whether or not the stimulus was seen by the subject. The method further includes determining for each location whether or not to re-present a stimulus at that location, wherein for a given location, the determining involves combining results obtained from multiple locations. These multiple locations are defined by a cluster associated with the given location, with the cluster being determined based on the paths of optic nerve fibre bundles across the visual field.
    Type: Application
    Filed: May 5, 2011
    Publication date: August 8, 2013
    Applicant: UCL BUSINESS PLC
    Inventors: David Crabb, Ciara Bergin, David Garway-Heath, Gay Verdon-Roe, Mark Westcott