Patents Assigned to Douglas Dynamics, L.L.C.
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Patent number: 12188190Abstract: A spreader comprises a hopper for containing sand, salt or other granular material to be spread upon snow or ice on paved surfaces, the hopper being adapted to be installed in or on a bed of a truck, the hopper having a trough, a shaftless auger positioned in the trough, an auger motor for driving the auger, a spinner positioned at one end of the auger for slinging the granular material upon the snow or ice, a spinner motor for driving the spinner, and at least one keeper supported by the trough and extending over the auger for retaining the auger in place during operation and thereby reducing flexure of the auger and resulting loss of efficiency of material transport by the auger during operation of the spreader.Type: GrantFiled: April 17, 2023Date of Patent: January 7, 2025Assignee: Douglas Dynamics, L.L.C.Inventors: Ryan Fossett, Christopher Aaron Horn, Gregory B. Neilson, Paul Yagiela
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Patent number: 11680379Abstract: A spreader comprises a hopper for containing sand, salt or other granular material to be spread upon snow or ice on paved surfaces, the hopper being adapted to be installed in or on a bed of a truck, the hopper having a trough, a shaftless auger positioned in the trough, an auger motor for driving the auger, a spinner positioned at one end of the auger for slinging the granular material upon the snow or ice, a spinner motor for driving the spinner, and at least one keeper supported by the trough and extending over the auger for retaining the auger in place during operation and thereby reducing flexure of the auger and resulting loss of efficiency of material transport by the auger during operation of the spreader.Type: GrantFiled: February 15, 2019Date of Patent: June 20, 2023Assignee: Douglas Dynamics, L.L.C.Inventors: Ryan Fossett, Christopher Aaron Horn, Gregory B. Neilson, Paul Yagiela
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Patent number: 11499280Abstract: A snow plow and mount frame assembly permits an operator to attach a snow plow to a mount frame secured to a vehicle, without the operator exiting a cab of the vehicle.Type: GrantFiled: June 26, 2019Date of Patent: November 15, 2022Assignee: Douglas Dynamics, L.L.C.Inventors: Chad Thomas Barker, David N. Bloxdorf, Matthew Thoma Curran, Gerald L. Depies, Christopher Aaron Horn, Bob Iverson, Leonard D. Morris
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Patent number: 11427978Abstract: A snow plow and mount assembly has a mount frame, an A-frame, a lift frame, a plow blade, an actuator, arms, receivers, recesses, hitch pins, a latch mechanism, and a latch lever. The elements are arranged such that the vehicle is driven toward the snow plow so that the arms are received in the receivers, the actuator is energized to pivot the lift frame relative to the A-frame so that the hitch pins are received in the recesses, and the lever is moved to move the latch mechanism to the latched position. The snow plow frame is thereby removably secured to the mount frame.Type: GrantFiled: August 10, 2020Date of Patent: August 30, 2022Assignee: Douglas Dynamics, L.L.C.Inventors: Chad Thomas Barker, David N. Bloxdorf, Matthew Thoma Curran, Christopher A. Dominguez, Matthew Terran Kaminecki
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Patent number: 11332899Abstract: A snow plow and mount assembly has a mount frame, an A-frame, a lift frame, a plow blade, an actuator, arms, receivers, recesses, hitch pins, a latch mechanism, and a latch lever. The elements are arranged such that the vehicle is driven toward the snow plow so that the arms are received in the receivers, the actuator is energized to pivot the lift frame relative to the A-frame so that the hitch pins are received in the recesses, and the lever is moved to move the latch mechanism to the latched position. The snow plow frame is thereby removably secured to the mount frame.Type: GrantFiled: August 10, 2020Date of Patent: May 17, 2022Assignee: Douglas Dynamics, L.L.C.Inventors: Chad Thomas Barker, David N. Bloxdorf, Matthew Thoma Curran, Christopher A. Dominguez, Matthew Terran Kaminecki
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Patent number: 10900183Abstract: A snow plow and mount assembly has a mount frame, an A-frame, a lift frame, a plow blade, an actuator, arms, receivers, recesses, hitch pins, a latch mechanism, and a latch lever. The elements are arranged such that the vehicle is driven toward the snow plow so that the arms are received in the receivers, the actuator is energized to pivot the lift frame relative to the A-frame so that the hitch pins are received in the recesses, and the lever is moved to move the latch mechanism to the latched position. The snow plow frame is thereby removably secured to the mount frame.Type: GrantFiled: January 15, 2018Date of Patent: January 26, 2021Assignee: Douglas Dynamics, L.L.C.Inventors: Chad Thomas Barker, David N. Bloxdorf, Matthew Thoma Curran, Christopher A. Dominguez, Matthew Terran Kaminecki
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Patent number: 10793056Abstract: A snow plow headlamp comprises a housing adapted to be mounted to a frame member of a snow plow assembly, at least a first forwardly directed LED mounted in the housing between opposite ends of the housing and configured to illuminate ahead of a vehicle to which the snow plow assembly is mounted, a second forwardly directed LED mounted in the housing adjacent one of the ends of the housing, a reflector mounted in the housing on a side of the second LED opposite the one end of the housing and configured to reflect light from the second LED to illuminate to a side of the vehicle to which the snow plow assembly is mounted, and a transparent cover mounted to the housing.Type: GrantFiled: October 11, 2018Date of Patent: October 6, 2020Assignee: Douglas Dynamics, L.L.C.Inventor: Christopher Aaron Horn
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Patent number: 9869067Abstract: A snow plow and mount assembly has a mount frame, an A-frame, a lift frame, a plow blade, an actuator, arms, receivers, recesses, hitch pins, a latch mechanism, and a latch lever. The elements are arranged such that the vehicle is driven toward the snow plow so that the arms are received in the receivers, the actuator is energized to pivot the lift frame relative to the A-frame so that the hitch pins are received in the recesses, and the lever is moved to move the latch mechanism to the latched position. The snow plow frame is thereby removably secured to the mount frame.Type: GrantFiled: November 13, 2014Date of Patent: January 16, 2018Assignee: Douglas Dynamics, L.L.C.Inventors: Chad Thomas Barker, David N. Bloxdorf, Matthew Thomas Curran, Christopher A. Dominguez, Matthew Terran Kaminecki
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Patent number: 9822563Abstract: For a V-plow having a pair of blades hinged together along inboard ends of the blades at a hinge, a gauge on a lower end of the hinge having a spacer, the spacer having a thickness in a direction generally transverse to a longitudinal axis of the V-plow corresponding to a desired minimum spacing between inboard ends of a pair of cutting edge plates to be installed on the blades, a method of installing the cutting edge plates on the blades is provided. The method comprises positioning one of the cutting edge plates along a lower edge of one of the blades so that the inboard end of the one cutting edge plate abuts one side of the spacer, securing the one cutting edge plate to the one blade, positioning the other cutting edge plate along a lower edge of the other blade so that the inboard end of the other cutting edge plate abuts the other side of the spacer, and securing the other cutting edge plate to the other blade.Type: GrantFiled: November 30, 2015Date of Patent: November 21, 2017Assignee: Douglas Dynamics, L.L.C.Inventors: Tyler Jones, Matthew Kaminecki
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Patent number: 9271441Abstract: A material spreader having a beater bar that meters the supply of small quantities of material to the discharge opening of a material spreader hopper eliminating the need for a gate. The beater bar has one and preferably several paddles that rotate adjacent the discharge opening and as the paddle passes the opening, discharges only the amount of material on the paddle. The material spreader uses a high ratio transmission and low rpm motor to allow for extremely slow rotation of the beater bar. The motor speed can be controlled to allow very slow rotation and very small amounts of material to be discharged from the hopper. The spreader does not require a gate. The discharge of material is metered electronically.Type: GrantFiled: June 20, 2014Date of Patent: March 1, 2016Assignee: Douglas Dynamics, L.L.C.Inventors: Charles Truan, Barry Truan
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Patent number: 9200418Abstract: For a V-plow having a pair of blades hinged together along inboard ends of the blades at a hinge, a gauge on a lower end of the hinge having a spacer, the spacer having a thickness in a direction generally transverse to a longitudinal axis of the V-plow corresponding to a desired minimum spacing between inboard ends of a pair of cutting edge plates to be installed on the blades, a method of installing the cutting edge plates on the blades is provided. The method comprises positioning one of the cutting edge plates along a lower edge of one of the blades so that the inboard end of the one cutting edge plate abuts one side of the spacer, securing the one cutting edge plate to the one blade, positioning the other cutting edge plate along a lower edge of the other blade so that the inboard end of the other cutting edge plate abuts the other side of the spacer, and securing the other cutting edge plate to the other blade.Type: GrantFiled: February 26, 2013Date of Patent: December 1, 2015Assignee: Douglas Dynamics, L.L.C.Inventors: Tyler Jones, Matthew Kaminecki
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Patent number: 8850724Abstract: A plow assembly for attachment to a vehicle having a longitudinal axis comprises a plow blade having first and second ends, a first plow wing pivotally mounted to the first end of the plow blade, and a plow support adapted to be operably mounted to the vehicle. The first plow wing is biased by a first compression. A first connecting member is connected to the first plow wing, passes through the first compression spring generally coaxially therewith, and is connected to the plow support. The first connecting member is configured to pivot the first plow wing relative to the plow blade during pivoting of the plow blade from a center position to a first position such that when the plow blade is in the first position the first plow wing is generally parallel to the plow blade.Type: GrantFiled: February 15, 2013Date of Patent: October 7, 2014Assignee: Douglas Dynamics, L.L.C.Inventor: David N. Bloxdorf
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Publication number: 20140237865Abstract: For a V-plow having a pair of blades hinged together along inboard ends of the blades at a hinge, a gauge on a lower end of the hinge having a spacer, the spacer having a thickness in a direction generally transverse to a longitudinal axis of the V-plow corresponding to a desired minimum spacing between inboard ends of a pair of cutting edge plates to be installed on the blades, a method of installing the cutting edge plates on the blades is provided. The method comprises positioning one of the cutting edge plates along a lower edge of one of the blades so that the inboard end of the one cutting edge plate abuts one side of the spacer, securing the one cutting edge plate to the one blade, positioning the other cutting edge plate along a lower edge of the other blade so that the inboard end of the other cutting edge plate abuts the other side of the spacer, and securing the other cutting edge plate to the other blade.Type: ApplicationFiled: February 26, 2013Publication date: August 28, 2014Applicant: DOUGLAS DYNAMICS, L.L.C.Inventors: Tyler Jones, Matthew Kaminecki
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Publication number: 20140230290Abstract: A plow assembly for attachment to a vehicle having a longitudinal axis comprises a plow blade having first and second ends, a first plow wing pivotally mounted to the first end of the plow blade, and a plow support adapted to be operably mounted to the vehicle. The first plow wing is biased by a first compression. A first connecting member is connected to the first plow wing, passes through the first compression spring generally coaxially therewith, and is connected to the plow support. The first connecting member is configured to pivot the first plow wing relative to the plow blade during pivoting of the plow blade from a center position to a first position such that when the plow blade is in the first position the first plow wing is generally parallel to the plow blade.Type: ApplicationFiled: February 15, 2013Publication date: August 21, 2014Applicant: Douglas Dynamics, L.L.C.Inventor: David N. Bloxdorf
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Patent number: 8607482Abstract: A plow assembly for attachment to a vehicle, the vehicle having a longitudinal axis, comprises a plow blade having first and second ends, a first plow wing pivotally mounted to the first end of the plow blade, a plow support adapted to be mounted to the vehicle, the plow blade being pivotally mounted to the plow support to permit the plow blade to pivot relative to the vehicle between a center position, where the plow blade is positioned generally perpendicular to the longitudinal axis of the vehicle, and a first position, where the first end of the plow blade is pivoted toward the vehicle, and between the center position and a second position, where the second end of the plow blade is pivoted toward the vehicle, and either a single link rod, a resilient connecting member, or a cam and follower mechanism connected to the first plow wing and to the plow support and configured to pivot the first plow wing relative to the plow blade during pivoting of the plow blade relative to the vehicle such that when the ploType: GrantFiled: February 28, 2011Date of Patent: December 17, 2013Assignee: Douglas Dynamics, L.L.C.Inventor: David N. Bloxdorf
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Publication number: 20120216434Abstract: A plow assembly for attachment to a vehicle, the vehicle having a longitudinal axis, comprises a plow blade having first and second ends, a first plow wing pivotally mounted to the first end of the plow blade, a plow support adapted to be mounted to the vehicle, the plow blade being pivotally mounted to the plow support to permit the plow blade to pivot relative to the vehicle between a center position, where the plow blade is positioned generally perpendicular to the longitudinal axis of the vehicle, and a first position, where the first end of the plow blade is pivoted toward the vehicle, and between the center position and a second position, where the second end of the plow blade is pivoted toward the vehicle, and either a single link rod, a resilient connecting member, or a cam and follower mechanism connected to the first plow wing and to the plow support and configured to pivot the first plow wing relative to the plow blade during pivoting of the plow blade relative to the vehicle such that when the ploType: ApplicationFiled: February 28, 2011Publication date: August 30, 2012Applicant: Douglas Dynamics, L.L.C.Inventor: David N. Bloxdorf
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Patent number: 7797859Abstract: A snowplow and mount assembly comprising a mount frame adapted to be secured to a vehicle, and a snowplow frame. One of the mount frame and the snowplow frame has first and second arms and the other of the mount frame and snowplow frame has first and second receivers, the first and second receivers receiving the first and second arms, respectively. Respective ones of first and second latch pins removably secure the first and second arms in the first and second receivers. A latch lever is operably associated with the first and second latch pins and simultaneously actuates the latch pins to latched and unlatched positions. The snowplow frame includes a jack stand movable to and between an extended ground contacting and snowplow frame supporting position and a retracted ground noncontacting and snowplow frame nonsupporting position.Type: GrantFiled: March 23, 2010Date of Patent: September 21, 2010Assignee: Douglas Dynamics, L.L.C.Inventors: Andre Valmont LeBlond, James Calvin Pieper, Mark Lawrence Stultz, Steven Lohry Klug, John Wallace Field, David Bloxdorf
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Publication number: 20090282706Abstract: A snow plow assembly comprises an A-frame assembly, a V-blade assembly pivoted to one end of the A-frame assembly, and a lift frame assembly pivoted to the other end of the A-frame assembly, the lift frame assembly adapted to be removably attached to a vehicle. The V-blade assembly comprises a pair of blades hinged together along inboard ends thereof, each blade of the pair of blades including first and second cutting edge plates removably secured to the blade, the first cutting edge plate fabricated of a first material, the second cutting edge plate fabricated of a second material, the first material having a greater resistance to abrasion wear than the second material.Type: ApplicationFiled: May 15, 2008Publication date: November 19, 2009Applicant: Douglas Dynamics, L.L.C.Inventors: Chad Barker, James Pieper, Mark Stultz
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Patent number: D880027Type: GrantFiled: October 11, 2018Date of Patent: March 31, 2020Assignee: Douglas Dynamics, L.L.C.Inventors: Christopher Aaron Horn, Seth Thomas Bergerud, Robert Douglas Clark, Michael Lee Frank, Tyler Barron Jones
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Patent number: D904654Type: GrantFiled: March 27, 2020Date of Patent: December 8, 2020Assignee: Douglas Dynamics, L.L.C.Inventors: Christopher Aaron Horn, Seth Thomas Bergerud, Robert Douglas Clark, Michael Lee Frank, Tyler Barron Jones