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).
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Publication number: 20240117580Abstract: 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: ApplicationFiled: December 14, 2023Publication date: April 11, 2024Applicant: Sicking Safety Systems LLCInventors: Dean L. SICKING, Dakotah SICKING, Steven D. THOMPSON, Kenneth WALLS, Kevin D. SCHRUM, Joseph SCHWERTZ, David LITTLEFIELD, Andrew DAMERON
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Patent number: 11846077Abstract: 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: GrantFiled: October 7, 2022Date of Patent: December 19, 2023Assignee: Sicking Safety Systems LLCInventors: Dean L. Sicking, Dakotah Sicking, Steven D. Thompson, Kenneth Walls, Kevin D. Schrum, Joseph Schwertz, David Littlefield, Andrew Dameron
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Publication number: 20230069692Abstract: 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: ApplicationFiled: October 7, 2022Publication date: March 2, 2023Applicant: Sicking Safety Systems LLCInventors: Dean L. Sicking, Dakotah Sicking, Steven D. Thompson, Kenneth Walls, Kevin D. Schrum, Joseph Schwertz, David Littlefield, Andrew Dameron
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Patent number: 11466415Abstract: 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: GrantFiled: December 9, 2019Date of Patent: October 11, 2022Inventors: Dean L. Sicking, Dakotah Sicking, Blake A. Feltman, Steven D. Thompson, Kenneth Walls, Kevin D. Schrum, Joseph Schwertz, David Littlefield, Andrew Dameron
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Publication number: 20210198855Abstract: 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: ApplicationFiled: May 31, 2019Publication date: July 1, 2021Inventors: Dean SICKING, David LITTLEFIELD, Kevin SCHRUM, Blake FELTMAN, Andrew DAMERON, Joseph SCHWERTZ
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Publication number: 20200190754Abstract: 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: ApplicationFiled: December 9, 2019Publication date: June 18, 2020Inventors: Dean L. Sicking, Dakotah Sicking, Blake A. Feltman, Steven D. Thompson, Kenneth Walls, Kevin D. Schrum, Joseph Schwertz, David Littlefield, Andrew Dameron
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Patent number: 9856616Abstract: 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: GrantFiled: March 7, 2015Date of Patent: January 2, 2018Assignee: The UAB Research FoundationInventors: Dean Sicking, David Littlefield, Kenneth Walls, Seth Cohen, Kevin Schrum
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Publication number: 20170303623Abstract: 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: ApplicationFiled: November 11, 2015Publication date: October 26, 2017Inventors: DEAN SICKING, DAVID LITTLEFIELD, KENNETH WALLS
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Patent number: 9683340Abstract: 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: GrantFiled: August 13, 2014Date of Patent: June 20, 2017Assignee: The UAB Research FoundationInventors: Dean Sicking, David Littlefield, Kenneth Walls
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Publication number: 20170016191Abstract: 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: ApplicationFiled: March 7, 2015Publication date: January 19, 2017Inventors: DEAN SICKING, DAVID LITTLEFIELD, KENNETH WALLS, SETH COHEN, KEVIN SCHRUM
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Publication number: 20160194841Abstract: 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: ApplicationFiled: August 13, 2014Publication date: July 7, 2016Applicant: THE UAB RESEARCH FOUNDATIONInventors: DEAN SICKING, DAVID LITTLEFIELD, KENNETH WALLS
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Patent number: 6379020Abstract: 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: GrantFiled: May 23, 2000Date of Patent: April 30, 2002Inventors: Steven E. Lewis, Franklin D. Lewis, David Littlefield