Patents by Inventor David Littlefield

David Littlefield 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: 20240117580
    Abstract: Guardrail, guardrail terminal, and support post designs that improve control of a vehicle during collisions are described. The disclosed designs also reduce the likelihood of intrusion into vehicle systems and the occupant compartment(s). Embodiments include folding and/or flattening of the guardrail and controlling the folded and flattened guardrail to avoid intrusion into the vehicle. Other embodiments include containing the guardrail in an impact head of a guardrail terminal, which also avoids vehicle intrusion.
    Type: Application
    Filed: December 14, 2023
    Publication date: April 11, 2024
    Applicant: Sicking Safety Systems LLC
    Inventors: Dean L. SICKING, Dakotah SICKING, Steven D. THOMPSON, Kenneth WALLS, Kevin D. SCHRUM, Joseph SCHWERTZ, David LITTLEFIELD, Andrew DAMERON
  • Patent number: 11846077
    Abstract: Guardrail, guardrail terminal, and support post designs that improve control of a vehicle during collisions are described. The disclosed designs also reduce the likelihood of intrusion into vehicle systems and the occupant compartment(s). Embodiments include folding and/or flattening of the guardrail and controlling the folded and flattened guardrail to avoid intrusion into the vehicle. Other embodiments include containing the guardrail in an impact head of a guardrail terminal, which also avoids vehicle intrusion.
    Type: Grant
    Filed: October 7, 2022
    Date of Patent: December 19, 2023
    Assignee: Sicking Safety Systems LLC
    Inventors: Dean L. Sicking, Dakotah Sicking, Steven D. Thompson, Kenneth Walls, Kevin D. Schrum, Joseph Schwertz, David Littlefield, Andrew Dameron
  • Publication number: 20230069692
    Abstract: Guardrail, guardrail terminal, and support post designs that improve control of a vehicle during collisions are described. The disclosed designs also reduce the likelihood of intrusion into vehicle systems and the occupant compartment(s). Embodiments include folding and/or flattening of the guardrail and controlling the folded and flattened guardrail to avoid intrusion into the vehicle. Other embodiments include containing the guardrail in an impact head of a guardrail terminal, which also avoids vehicle intrusion.
    Type: Application
    Filed: October 7, 2022
    Publication date: March 2, 2023
    Applicant: Sicking Safety Systems LLC
    Inventors: Dean L. Sicking, Dakotah Sicking, Steven D. Thompson, Kenneth Walls, Kevin D. Schrum, Joseph Schwertz, David Littlefield, Andrew Dameron
  • Patent number: 11466415
    Abstract: Guardrail, guardrail terminal, and support post designs that improve control of a vehicle during collisions are described. The disclosed designs also reduce the likelihood of intrusion into vehicle systems and the occupant compartment(s). Embodiments include folding and/or flattening of the guardrail and controlling the folded and flattened guardrail to avoid intrusion into the vehicle. Other embodiments include containing the guardrail in an impact head of a guardrail terminal, which also avoids vehicle intrusion.
    Type: Grant
    Filed: December 9, 2019
    Date of Patent: October 11, 2022
    Inventors: Dean L. Sicking, Dakotah Sicking, Blake A. Feltman, Steven D. Thompson, Kenneth Walls, Kevin D. Schrum, Joseph Schwertz, David Littlefield, Andrew Dameron
  • Publication number: 20210198855
    Abstract: Various embodiments for a coiled containment guardrail system and terminal are described. A guardrail system can include a terminal head configured for placement at a distal end of a guardrail beam, where the terminal head includes a canister having a hollow interior and an impact surface. A chute can be coupled to the terminal head, where the chute is configured to guide a guardrail beam into the terminal head in response to an impact being experienced at the impact surface. The terminal head may further include a flattening device coupled to the chute configured to flatten the guardrail beam in response to the impact being experienced at the terminal head. The canister can be configured to coil and store the guardrail beam as flattened by the flattening device in the hollow interior of the canister.
    Type: Application
    Filed: May 31, 2019
    Publication date: July 1, 2021
    Inventors: Dean SICKING, David LITTLEFIELD, Kevin SCHRUM, Blake FELTMAN, Andrew DAMERON, Joseph SCHWERTZ
  • Publication number: 20200190754
    Abstract: Guardrail, guardrail terminal, and support post designs that improve control of a vehicle during collisions are described. The disclosed designs also reduce the likelihood of intrusion into vehicle systems and the occupant compartment(s). Embodiments include folding and/or flattening of the guardrail and controlling the folded and flattened guardrail to avoid intrusion into the vehicle. Other embodiments include containing the guardrail in an impact head of a guardrail terminal, which also avoids vehicle intrusion.
    Type: Application
    Filed: December 9, 2019
    Publication date: June 18, 2020
    Inventors: Dean L. Sicking, Dakotah Sicking, Blake A. Feltman, Steven D. Thompson, Kenneth Walls, Kevin D. Schrum, Joseph Schwertz, David Littlefield, Andrew Dameron
  • Patent number: 9856616
    Abstract: A self-restoring crash cushion including multiple diaphragms spaced along a length direction of the cushion, an elongated track adapted to be anchored to the ground that extends along the length direction under the cushion, the diaphragms being mounted to the track in a manner in which they can slide along the track when impacted by a moving vehicle or when the cushion is being restored, and means for dissipating energy of the moving vehicle.
    Type: Grant
    Filed: March 7, 2015
    Date of Patent: January 2, 2018
    Assignee: The UAB Research Foundation
    Inventors: Dean Sicking, David Littlefield, Kenneth Walls, Seth Cohen, Kevin Schrum
  • Publication number: 20170303623
    Abstract: In one embodiment, a protective helmet includes an outer shell and an inner liner provided within the outer shell, the liner comprising an energy absorber including a first layer, an opposed second layer, and a plurality of energy absorbing columns provided between the layers, wherein the columns include relatively long columns that are attached to both the first and second layers and relatively short columns that are attached to only one of the first and second layers.
    Type: Application
    Filed: November 11, 2015
    Publication date: October 26, 2017
    Inventors: DEAN SICKING, DAVID LITTLEFIELD, KENNETH WALLS
  • Patent number: 9683340
    Abstract: In one embodiment, a bollard system includes multiple support beams adapted to be embedded in concrete, multiple bollards, each bollard being attached to a support beam a point near a center of the beam, and a reinforcing bar that is woven between the support beams to provide reinforcement to the system.
    Type: Grant
    Filed: August 13, 2014
    Date of Patent: June 20, 2017
    Assignee: The UAB Research Foundation
    Inventors: Dean Sicking, David Littlefield, Kenneth Walls
  • Publication number: 20170016191
    Abstract: In one embodiment, a self-restoring crash cushion including multiple diaphragms spaced along a length direction of the cushion, an elongated track adapted to be anchored to the ground that extends along the length direction under the cushion, the diaphragms being mounted to the track in a manner in which they can slide along the track when impacted by a moving vehicle or when the cushion is being restored, and means for dissipating energy of the moving vehicle.
    Type: Application
    Filed: March 7, 2015
    Publication date: January 19, 2017
    Inventors: DEAN SICKING, DAVID LITTLEFIELD, KENNETH WALLS, SETH COHEN, KEVIN SCHRUM
  • Publication number: 20160194841
    Abstract: In one embodiment, a bollard system includes multiple support beams adapted to be embedded in concrete, multiple bollards, each bollard being attached to a support beam a point near a center of the beam, and a reinforcing bar that is woven between the support beams to provide reinforcement to the system.
    Type: Application
    Filed: August 13, 2014
    Publication date: July 7, 2016
    Applicant: THE UAB RESEARCH FOUNDATION
    Inventors: DEAN SICKING, DAVID LITTLEFIELD, KENNETH WALLS
  • Patent number: 6379020
    Abstract: A versatile stopcock tool for installation of and adjusting flow in stop boxes for water, oil, gas and the like fluid materials. The tool is long with folding handles, has a telescopic shaft for storage and portage, and has specific heads for different functions. A flashlight can be removably clamped on the shaft.
    Type: Grant
    Filed: May 23, 2000
    Date of Patent: April 30, 2002
    Inventors: Steven E. Lewis, Franklin D. Lewis, David Littlefield