Patents by Inventor David S. Matthews

David S. Matthews 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: 20220341222
    Abstract: The invention is related to construction, namely, discloses a shackle and a locking device comprising said shackle. The technical effect is improving the performance of the device due to a certain design of the shackle. The technical effect is achieved by the fact that the shackle comprises: a first end; a second end, and a plurality of bends between the first end and the second end, thereby forming: a first segment between the first end and a first bend, a second segment between the first bend and a second bend, a third segment between the second bend and a third bend, and a fourth segment between the third bend and the second end, wherein the first segment lies in a first plane and the fourth segment is substantially co-planar with the first segment, and the technical effect is also achieved by design options of the locking device comprising said shackle.
    Type: Application
    Filed: July 17, 2020
    Publication date: October 27, 2022
    Inventor: David S. MATTHEWS
  • Patent number: 8988173
    Abstract: A differential circuit topology that produces a tunable floating negative inductance, negative capacitance, negative resistance/conductance, or a combination of the three. These circuits are commonly referred to as “non-Foster circuits.” The disclosed embodiments of the circuits comprises two differential pairs of transistors that are cross-coupled, a load immittance, multiple current sources, two Common-Mode FeedBack (CMFB) networks, at least one tunable (variable) resistance, and two terminals across which the desired immittance is present. The disclosed embodiments of the circuits may be configured as either a Negative Impedance Inverter (NII) or a Negative Impedance Converter (NIC) and as either Open-Circuit-Stable (OCS) and Short-Circuit-Stable (SCS).
    Type: Grant
    Filed: April 6, 2012
    Date of Patent: March 24, 2015
    Assignee: HRL Laboratories, LLC
    Inventors: Donald A. Hitko, Carson R. White, Michael W. Yung, David S. Matthews, Susan L. Morton, Jason W. May, Joseph S. Colburn
  • Publication number: 20120256709
    Abstract: A differential circuit topology that produces a tunable floating negative inductance, negative capacitance, negative resistance/conductance, or a combination of the three. These circuits are commonly referred to as “non-Foster circuits.” The disclosed embodiments of the circuits comprises two differential pairs of transistors that are cross-coupled, a load immittance, multiple current sources, two Common-Mode FeedBack (CMFB) networks, at least one tunable (variable) resistance, and two terminals across which the desired immittance is present. The disclosed embodiments of the circuits may be configured as either a Negative Impedance Inverter (NII) or a Negative Impedance Converter (NIC) and as either Open-Circuit-Stable (OCS) and Short-Circuit-Stable (SCS).
    Type: Application
    Filed: April 6, 2012
    Publication date: October 11, 2012
    Applicant: HRL LABORATORIES, LLC
    Inventors: Donald A. Hitko, Carson R. White, Michael W. Yung, David S. Matthews, Susan L. Morton, Jason W. May, Joseph S. Colburn
  • Publication number: 20110278236
    Abstract: In one embodiment, the invention provides a device including a first tubular member having a first diameter, the first tubular member including a first end having an attachment device for attaching the first tubular member to a fluid supply, a second end, and a perforated surface between the first end and the second end, and a second tubular member having a second diameter less than the first diameter, the second tubular member including, a first end, a second end, and a perforated surface between the first end and the second end, wherein the second tubular member is adapted to reside within the first tubular member.
    Type: Application
    Filed: May 13, 2011
    Publication date: November 17, 2011
    Inventor: David S. Matthews
  • Publication number: 20080078361
    Abstract: An engine system that compensates for disturbances in a crankshaft signal is provided. The system includes: an error module that computes an error between an ideal period and an actual period of a crankshaft signal; a correction factor module that determines a correction factor based on the error; and a compensation module that applies the correction factor to the actual period of the crankshaft signal.
    Type: Application
    Filed: October 3, 2006
    Publication date: April 3, 2008
    Inventors: David S. Matthews, Tameem K. Assaf, Ronald J. Kubani, David L. St. Pierre, Yong Xu
  • Patent number: 7239979
    Abstract: A method for ordered fault clearance visualization in a computer controlled print production device includes receiving data from the print production device operational sensors indicating a possible fault event. Fault analysis is performed to determine whether faults have occurred and to identify the location and type for each fault, based on the data and fault definitions. Identified faults are prioritized, with each fault assigned a unique priority and the order in which the faults are to be cleared is developed. A visualization of the print production device is presented on the graphical user interface, with graphical cues superimposed upon the visualization of the print production device to indicate the fault order, such that a single view presents all identified faults in the system and the fault order in which they should be cleared. The visualization is updated as each said fault is cleared until a no fault state is achieved.
    Type: Grant
    Filed: September 28, 2006
    Date of Patent: July 3, 2007
    Assignee: Xerox Corporation
    Inventors: Brandon S. McComber, Andrew T. Martin, David S. Matthews
  • Patent number: 6970266
    Abstract: A method and graphical user interface system provide fault notes in a printing system. A fault screen window is provided that depicts faults for individual supply unit devices and output unit devices which can be opened by selecting the fault button and/or fault icon. A fault notes window is also provided for user editable text linked to the fault screen window. The fault notes window displays only user editable text related to a selected device or displays only user editable text related to the system when no device is selected. A fault notes icon is configured to appear when user editable text has previously been entered on said fault notes window.
    Type: Grant
    Filed: January 23, 2001
    Date of Patent: November 29, 2005
    Assignee: Xerox Corporation
    Inventors: David S. Matthews, Thomas A. Myers
  • Patent number: 6920613
    Abstract: A fault clearance system and method for a graphical user interface. The system includes a plurality of video objects, each video object corresponding to a respective fault of a reprographic or printing system. Each video object further includes a plurality of video segments corresponding to fault clearance steps. Similarly, a plurality of text objects correspond to respective faults of the reprographic or printing system, and each text object further includes a plurality of text steps, one corresponding to each video segment of the respective video object. A bi-directional linkage system links each of the video segments to one of the text steps and each of the text steps is linked to one of the video segments. A video window displays the video segments, and a text window displays one or more of the text steps of a selected text object.
    Type: Grant
    Filed: August 27, 2001
    Date of Patent: July 19, 2005
    Assignee: Xerox Corporation
    Inventors: Jonathan A. Dorsey, David S. Matthews, Jonathan A. Goldstein
  • Patent number: 6917437
    Abstract: The present invention relates to a printing system, and more particularly to a resource management using job tickets displayed on a user interface for controlling a printing system to generate documents received from one or more input units including a computer network, scanner, modem, etc. Since the operator or user wishes to offer a wide variety of printing options to customers and complete customer orders as quickly as possible, minimizing the interruption of print jobs is a very important priority. By replenishing supplies such as stock and toner in a timely fashion, the utilization of the printing systems can be maximized. In order for the operator to more efficiently utilize the printing system to perform a large number of print jobs with as few interruptions as possible, the present invention provides a user friendly navigational tool, which can provide the operator with information regarding the amount of printing supplies currently available in the printing system.
    Type: Grant
    Filed: June 29, 1999
    Date of Patent: July 12, 2005
    Assignee: Xerox Corporation
    Inventors: Thomas A. Myers, Jonathan A. Dorsey, Richard M. Hraber, Stephen F. Skrainar, David S. Matthews
  • Patent number: 6806972
    Abstract: A method of determining the configuration of a plurality of resources in an image processing apparatus by running turn around tests to determine the interconnection of the resources and comparing the interconnection to a reference interconnection indicator stored in memory. The difference of interconnections between the reference indicator and the determined interconnections is then displayed to an operator for confirmation. An indication of the new configuration, if confirmed, is then loaded into memory and the machine is set up based upon the new configuration.
    Type: Grant
    Filed: January 8, 1998
    Date of Patent: October 19, 2004
    Assignee: Xerox Corporation
    Inventors: Elizabeth B. Daddis, C. Michael Ray, Robert G. Hamer, Susan B. Layer, Rex B. Murphy, Gary R. Kern, Everett W. Jenkins, Anne E. Dewitte, Robert W. Rassler, David S. Matthews
  • Publication number: 20040205087
    Abstract: A fault clearance system and method for a graphical user interface. The system includes a plurality of video objects, each video object corresponding to a respective fault of a reprographic or printing system. Each video object further includes a plurality of video segments corresponding to fault clearance steps. Similarly, a plurality of text objects correspond to respective faults of the reprographic or printing system, and each text object further includes a plurality of text steps, one corresponding to each video segment of the respective video object. A bi-directional linkage system links each of the video segments to one of the text steps and each of the text steps is linked to one of the video segments. A video window displays the video segments, and a text window displays one or more of the text steps of a selected text object.
    Type: Application
    Filed: August 27, 2001
    Publication date: October 14, 2004
    Applicant: XEROX CORPORATION
    Inventors: Jonathan A. Dorsey, David S. Matthews, Jonathan A. Goldstein
  • Patent number: 6618170
    Abstract: A color printer control system comprising a user interface for shifting color hue. A control panel display includes an illustrative representation such as a color spectrum bar for suggesting a color range for both the input document and the output document. The user interface has a selective control such as a slide bar including an indicator of a user preference relative to the color reference bar. The position of the slide bar represents the hue shift input by the user. A dynamic image representation, such as a photograph, concurrently adjusts its hue in accordance with adjustment of the color slide bar and the user command. The dynamic image shifts color hue to provide a more accurate indication of the effects of hue shift to the user.
    Type: Grant
    Filed: May 14, 1999
    Date of Patent: September 9, 2003
    Assignee: Xerox Corporation
    Inventors: John F. Whiting, Jonathan A. Dorsey, Andrew T. Martin, David S. Matthews, Richard A. Sperling, Richard M. Hraber
  • Publication number: 20020097447
    Abstract: A method and apparatus for an image forming system enabling an intelligent repeat image feature is disclosed. The intelligent repeat image feature enables a user to submit an image, scanned or otherwise, and manipulate that image to result in an output image containing repeated enlarged/reduced copies of the original image on a single printing medium.
    Type: Application
    Filed: January 25, 2001
    Publication date: July 25, 2002
    Applicant: Xerox Corporation
    Inventors: David S. Matthews, John F. Whiting, William C. Emerson
  • Publication number: 20020097422
    Abstract: A method and graphical user interface system provide fault notes in a printing system. A fault screen window is provided that depicts faults for individual supply unit devices and output unit devices which can be opened by selecting the fault button and/or fault icon. A fault notes window is also provided for user editable text linked to the fault screen window. The fault notes window displays only user editable text related to a selected device or displays only user editable text related to the system when no device is selected. A fault notes icon is configured to appear when user editable text has previously been entered on said fault notes window.
    Type: Application
    Filed: January 23, 2001
    Publication date: July 25, 2002
    Applicant: XEROX CORPORATION
    Inventors: David S. Matthews, Thomas A. Myers
  • Patent number: 6353899
    Abstract: There is provided a fault management system for a printing system having a memory for storing a first set of attribute values and a second set of attribute values. The fault management system includes a user interface with a display screen upon which a selected one of the first set of attribute values and the second set of attribute values is displayable. The printing system further includes a system, responsive to which one of the first set of attribute values and second set of attribute values is to be displayed on said user interface display screen, for controlling display of one or both of a first set of fault related information and a second set of fault related information on the display screen.
    Type: Grant
    Filed: April 10, 1998
    Date of Patent: March 5, 2002
    Assignee: Xerox Corporation
    Inventors: Andrew T. Martin, David S. Matthews
  • Patent number: 6124935
    Abstract: Alignment system and method for use by pipefitters. A portable hand tool having the appearances of a flashlight and the capability of projecting a collimated, coherent or otherwise directed, highly focused and narrow light beam is provided a coupling device on the end opposite the light emanation end, swivel capability about its elongate axis and bubble-type level devices. A targeting subsystem, for use with the light emanating tool, completes the alignment system. A portion of the targeting subsystem uses a vertically adjustable stand having a bracket useful both for alignment of piping and/or pipe supports, as well as for securing target placards. The target placards are indexed referencing elements that are capturable by the stand bracket or otherwise suspendable pipe straps and brackets (supports). The system lends itself to highly diverse forms of application, in a host of piping and plumbing system installations, and is readily manipulable by a single person.
    Type: Grant
    Filed: October 17, 1996
    Date of Patent: September 26, 2000
    Inventor: David S. Matthews
  • Patent number: 5568265
    Abstract: Alignment system and method for use by pipefitters. A portable hand tool having the appearances of a flashlight and the capability of projecting a collimated, coherent or otherwise directed, highly focused and narrow light beam is provided a multiply threaded end opposite the end of light emanation, swivel capability about its elongate axis and bubble-type level devices. A targeting subsystem, for use with the light emanating tool, completes the alignment system. A portion of the targeting subsystem uses a vertically adjustable stand having a bracket useful both for alignment of piping and/or pipe supports, as well as for securing target placards. The target placards are indexed referencing elements that are capturable by the stand bracket or otherwise suspendable pipe straps and brackets (supports). The system lends itself to highly diverse forms of application, in a host of piping and plumbing system installations, and is readily manipulable by a single person.
    Type: Grant
    Filed: April 5, 1995
    Date of Patent: October 22, 1996
    Inventor: David S. Matthews