Patents by Inventor Carl Walker

Carl Walker 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: 20240067099
    Abstract: The present disclosure relates to a vehicle rack configured to be mounted to the rear of a vehicle. The vehicle rack includes a plurality of receptacles configured to house recreational items, such as skis or snowboards. The plurality of receptacles are coupled to the vehicle by a hitch arm. The hitch arm and plurality of receptacles form a pivot point so that the plurality of receptacles and be pivoted with respect to the hitch arm and the vehicle.
    Type: Application
    Filed: July 5, 2023
    Publication date: February 29, 2024
    Inventors: Daniel Goldman, Carl Walker
  • Patent number: 11791729
    Abstract: The technology described herein is directed to a DC input power supply unit with an auxiliary boost control circuit (or controller) that facilitates continuous supply of power to a standby output load of the power supply unit in a bootloader mode. More specifically, the auxiliary boost circuit (or controller) is configured to assume control of a primary power boost stage from a primary controller in a bootloader mode so that the power supply unit can continue to supply power to the standby output with a protection function regardless of the state of the power supply unit or primary controller.
    Type: Grant
    Filed: May 25, 2022
    Date of Patent: October 17, 2023
    Assignee: Astec International Limited
    Inventors: Chih-hao Hsu, Chang-Chieh Yu, Carl Walker, Chun-Wei Chang, Po-Tso Chen
  • Publication number: 20220286052
    Abstract: The technology described herein is directed to a DC input power supply unit with an auxiliary boost control circuit (or controller) that facilitates continuous supply of power to a standby output load of the power supply unit in a bootloader mode. More specifically, the auxiliary boost circuit (or controller) is configured to assume control of a primary power boost stage from a primary controller in a bootloader mode so that the power supply unit can continue to supply power to the standby output with a protection function regardless of the state of the power supply unit or primary controller.
    Type: Application
    Filed: May 25, 2022
    Publication date: September 8, 2022
    Inventors: Chih-hao HSU, Chang-Chieh YU, Carl Walker, Chun-Wei Chang, Po-Tso Chen
  • Patent number: 11381169
    Abstract: The technology described herein is directed to a DC input power supply unit with an auxiliary boost control circuit (or controller) that facilitates continuous supply of power to a standby output load of the power supply unit in a bootloader mode. More specifically, the auxiliary boost circuit (or controller) is configured to assume control of a primary power boost stage from a primary controller in a bootloader mode so that the power supply unit can continue to supply power to the standby output with a protection function regardless of the state of the power supply unit or primary controller.
    Type: Grant
    Filed: September 28, 2020
    Date of Patent: July 5, 2022
    Assignee: Astec International Limited
    Inventors: Chih-hao Hsu, Chang-Chieh Yu, Carl Walker, Chun-Wei Chang, Po-Tso Chen
  • Publication number: 20220103071
    Abstract: The technology described herein is directed to a DC input power supply unit with an auxiliary boost control circuit (or controller) that facilitates continuous supply of power to a standby output load of the power supply unit in a bootloader mode. More specifically, the auxiliary boost circuit (or controller) is configured to assume control of a primary power boost stage from a primary controller in a bootloader mode so that the power supply unit can continue to supply power to the standby output with a protection function regardless of the state of the power supply unit or primary controller.
    Type: Application
    Filed: September 28, 2020
    Publication date: March 31, 2022
    Applicant: Astec International Limited
    Inventors: Chih-hao HSU, Chang-Chieh YU, Carl Walker, Chun-Wei Chang, Po-Tso Chen
  • Patent number: 7583704
    Abstract: Methods and devices are provided for allowing upstream and downstream cable modem termination systems to be located in different physical locations. According to some embodiments of the invention, a downstream CMTS is located at a head end of a cable network and an upstream CMTS is located in each of a plurality of hubs in a cable network. Such a configuration provides more flexibility than prior art systems, especially when much of the traffic passing through the downstream CMTS is broadcast traffic, such as IP video, that will be passed to multiple hubs. Such configurations are more economical because they do not require every hub to have its own downstream CMTS. In preferred embodiments, the upstream and downstream functions are synchronized using a Global Positioning System (“GPS”) reference source.
    Type: Grant
    Filed: June 10, 2003
    Date of Patent: September 1, 2009
    Inventors: Carl Walker, David Fox, Achot Matevossian, Michael Healy
  • Publication number: 20060269379
    Abstract: A chassis shipping unit for over-the-road trailer chassis. The shipping unit includes a base platform for supporting first and second trailer chassis; first tandem leg structure mounted to the base platform for extending upward between the leading and trailing wheels of the first trailer chassis; and second tandem leg structure mounted to the base platform for extending upward between the leading and trailing wheels of a second trailer chassis with the second trailer chassis supported above the first trailer chassis.
    Type: Application
    Filed: May 31, 2005
    Publication date: November 30, 2006
    Applicant: Greenfield Engineering, Inc.
    Inventors: Bobby Orr, Robert King, Carl Walker
  • Patent number: 6498623
    Abstract: The present invention includes a system and method for generating variable-length timing signals in an electronic imaging device. A digital camera device includes an electronic image sensor which requires a complex set of timing signals to effectively capture image data. The digital camera therefore also includes timing generation circuitry which generates a set of precise timing signals for a variable-length frame time necessary to control and synchronize the electronic image sensor within the digital camera. The present invention includes a transfer substrate charge (Xsub) source circuit and a frame time source circuit, each containing a downcounter. The point in time when the downcounters reach zero is available as a precise and programmable timing reference. Both the Xsub time and frame time source circuits are loaded from registers under software control.
    Type: Grant
    Filed: November 4, 1997
    Date of Patent: December 24, 2002
    Assignee: Flashpoint Technology, Inc.
    Inventors: Eric Anderson, John Carl Walker
  • Publication number: 20020185237
    Abstract: An Overhead Doorstop Shock Absorbing Device for Freight Truck Doors as shown in FIG. 1 performs as follows. The overhead door is opened and moves upward until it meets the Overhead Doorstop Shock Absorbing Device, which then absorbs the energy through its springs, thus preventing the overhead door from overextending. This absorption of energy minimizes wear and reduces damage to springs, cables and rollers in current state of the art overhead door assembly systems. This greatly increases financial savings by reducing part consumption, labor costs and downtime.
    Type: Application
    Filed: June 11, 2001
    Publication date: December 12, 2002
    Inventor: Carl Walker