Patents Assigned to Douglas Dynamics
  • Publication number: 20140230290
    Abstract: 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: Application
    Filed: February 15, 2013
    Publication date: August 21, 2014
    Applicant: Douglas Dynamics, L.L.C.
    Inventor: David N. Bloxdorf
  • Patent number: 8607482
    Abstract: 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 plo
    Type: Grant
    Filed: February 28, 2011
    Date of Patent: December 17, 2013
    Assignee: Douglas Dynamics, L.L.C.
    Inventor: David N. Bloxdorf
  • Publication number: 20120216434
    Abstract: 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 plo
    Type: Application
    Filed: February 28, 2011
    Publication date: August 30, 2012
    Applicant: Douglas Dynamics, L.L.C.
    Inventor: David N. Bloxdorf
  • Patent number: 7797859
    Abstract: 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: Grant
    Filed: March 23, 2010
    Date of Patent: September 21, 2010
    Assignee: Douglas Dynamics, L.L.C.
    Inventors: Andre Valmont LeBlond, James Calvin Pieper, Mark Lawrence Stultz, Steven Lohry Klug, John Wallace Field, David Bloxdorf
  • Publication number: 20100175281
    Abstract: 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: Application
    Filed: March 23, 2010
    Publication date: July 15, 2010
    Applicant: Douglas Dynamics, LLC
    Inventors: Andre Valmont LeBlond, James Calvin Pieper, Mark Lawrence Stultz, Steven Lohry Klug, John Wallace Field, David Bloxdorf
  • Patent number: 7737576
    Abstract: A control for a vehicle mounted accessory that has an electrically operable device. The accessory is operated by a switch that is mounted on the vehicle remote from the accessory. The switch and the electrically operable device are electrically connected by programmable controllers and a communications bus. The control has the capability of automatically determining the presence of a vehicle DRL mode, and the accessory turn signal lights are automatically illuminated to provide an accessory DRL mode. The control can automatically detect different accessories and reprogram itself to control them. The control provides a secured communications link between it and the accessory to prevent accessory theft.
    Type: Grant
    Filed: July 15, 2008
    Date of Patent: June 15, 2010
    Assignee: Douglas Dynamics, LLC
    Inventors: Edwin A. Wayne, Clarence J. Rand
  • Publication number: 20090282706
    Abstract: 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: Application
    Filed: May 15, 2008
    Publication date: November 19, 2009
    Applicant: Douglas Dynamics, L.L.C.
    Inventors: Chad Barker, James Pieper, Mark Stultz
  • Publication number: 20090031592
    Abstract: 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: Application
    Filed: October 7, 2008
    Publication date: February 5, 2009
    Applicant: DOUGLAS DYNAMICS, L.L.C.
    Inventors: Andre Valmont LeBlond, James Calvin Pieper, Mark Lawrence Stultz, Steven Lohry Klug, John Wallace Field, David Bloxdorf
  • Publication number: 20080266888
    Abstract: A control for a vehicle mounted accessory that has an electrically operable device. The accessory is operated by a switch that is mounted on the vehicle remote from the accessory. The switch and the electrically operable device are electrically connected by programmable controllers and a communications bus. The control has the capability of automatically determining the presence of a vehicle DRL mode, and the accessory turn signal lights are automatically illuminated to provide an accessory DRL mode. The control can automatically detect different accessories and reprogram itself to control them. The control provides a secured communications link between it and the accessory to prevent accessory theft.
    Type: Application
    Filed: July 15, 2008
    Publication date: October 30, 2008
    Applicant: DOUGLAS DYNAMICS, L.L.C.
    Inventors: Edwin A. Wayne, Clarence J. Rand
  • Patent number: 7430821
    Abstract: 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: Grant
    Filed: September 20, 2005
    Date of Patent: October 7, 2008
    Assignee: Douglas Dynamics, L.L.C.
    Inventors: Andre Valmont LeBlond, James Calvin Pieper, Mark Lawrence Stultz, Steven Lohry Klug, John Wallace Field, David Bloxdorf
  • Patent number: 7400058
    Abstract: A control for a vehicle mounted accessory that has an electrically operable device. The accessory is operated by a switch that is mounted on the vehicle remote from the accessory. The switch and the electrically operable device are electrically connected by programmable controllers and a communications bus. The control has the capability of automatically determining the presence of a vehicle DRL mode, and the accessory turn signal lights are automatically illuminated to provide an accessory DRL mode. The control can automatically detect different accessories and reprogram itself to control them. The control provides a secured communications link between it and the accessory to prevent accessory theft.
    Type: Grant
    Filed: October 29, 2004
    Date of Patent: July 15, 2008
    Assignee: Douglas Dynamics, L.L.C.
    Inventors: Edwin A. Wayne, Clarence J. Rand
  • Publication number: 20070068049
    Abstract: A plow assembly includes a pair of plow wings which are pivotally mounted at opposite ends of a center plow. Each of the plow wings may pivot between a forwardly angled position and an aligned position. The plow assembly may pivot a trailing plow wing in response to the center plow being urged or angled toward that side of the vehicle. The plow wines may be oriented in their forwardly angled position until the center plow is at least substantially urged or pivoted toward its angled position or toward a position between the center position and the angled position. The trailing plow wing may be pivoted or urged to its aligned position in response to the center plow being substantially urged or pivoted toward its angled position or toward a position between its center position and its angled position.
    Type: Application
    Filed: November 14, 2006
    Publication date: March 29, 2007
    Applicant: DOUGLAS DYNAMICS, L.L.C.
    Inventors: Philip Quenzi, Cal Niemela, Nels Niemela
  • Patent number: 7152883
    Abstract: A ballast assembly for vehicles is mounted on one vehicle portion to balance the vehicle and counterbalance the weight of an implement such as a snowplow assembly on another portion of the vehicle. The ballast assembly includes a ballast member having a predetermined weight and a contour coordinated to the vehicle shape. A vehicle mounting member removably mounts the ballast member to the vehicle such as at a hitch receiver socket or to the vehicle frame at the rear end of the vehicle. The ballast member may comprise one or more metal plates stacked and secured to one another, or a hollow enclosure either temporarily or permanently filled with a weighted material such as sand, gravel, or concrete.
    Type: Grant
    Filed: December 30, 2003
    Date of Patent: December 26, 2006
    Assignee: Douglas Dynamics, L.L.C.
    Inventor: Cal G Niemela
  • Patent number: 7134227
    Abstract: A plow assembly includes a pair of plow wings which are pivotally mounted at opposite ends of a center plow. Each of the plow wings may pivot between a forwardly angled position and an aligned position. The plow assembly may pivot a trailing plow wing in response to the center plow being urged or angled toward that side of the vehicle. The plow wings may be oriented in their forwardly angled position until the center plow is at least substantially urged or pivoted toward its angled position or toward a position between the center position and the angled position. The trailing plow wing may be pivoted or urged to its aligned position in response to the center plow being substantially urged or pivoted toward its angled position or toward a position between its center position and its angled position.
    Type: Grant
    Filed: April 29, 2004
    Date of Patent: November 14, 2006
    Assignee: Douglas Dynamics, L.L.C.
    Inventors: Philip J Quenzi, Cal G Niemela, Nels A Niemela
  • Publication number: 20060010722
    Abstract: 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: Application
    Filed: September 20, 2005
    Publication date: January 19, 2006
    Applicant: Douglas Dynamics, L.L.C.
    Inventors: Andre LeBlond, James Pieper, Mark Stultz, Steven Klug, John Field, David Bloxdorf
  • Publication number: 20060005434
    Abstract: A snowplow assembly comprises a lift frame and A-frame operably pivotally connected together and an actuator operably connected between the lift frame and A-frame for effecting relative pivotal movement between the lift frame and A-frame. A plow blade includes a blade frame. The blade frame includes a tube of circular cross section which is operably pivotally connected to the A-frame. The tube is pivotally received by a quadrant, which is operably connected to the A-frame. A resilient element is operable between the blade frame and A-frame normally biasing a lower edge of the plow blade forwardly. The resilient element is an elastomeric loop. The pivotal connection of the plow blade to the A-frame in combination with the resilient element provides a trip function of the plow blade. The plow blade is a composite. The circular tube of the blade frame provides torsional stiffness to the composite blade.
    Type: Application
    Filed: September 13, 2005
    Publication date: January 12, 2006
    Applicant: Douglas Dynamics, L.L.C.
    Inventors: Michael Goy, Scott Kluck, Andre LeBlond
  • Patent number: 6944978
    Abstract: 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: Grant
    Filed: June 11, 2001
    Date of Patent: September 20, 2005
    Assignee: Douglas Dynamics, LLC
    Inventors: Andre Valmont LeBlond, James Calvin Pieper, Mark Lawrence Stultz, Steven Lohry Klug, John Wallace Field, David Bloxdorf
  • Patent number: 6941685
    Abstract: A snowplow assembly comprises a lift frame and A-frame operably pivotally connected together and an actuator operably connected between the lift frame and A-frame for effecting relative pivotal movement between the lift frame and A-frame. A plow blade includes a blade frame. The blade frame includes a tube of circular cross section which is operably pivotally connected to the A-frame. The tube is pivotally received by a quadrant, which is operably connected to the A-frame. A resilient element is operable between the blade frame and A-frame normally biasing a lower edge of the plow blade forwardly. The resilient element is an elastomeric loop. The pivotal connection of the plow blade to the A-frame in combination with the resilient element provides a trip function of the plow blade. The plow blade is a composite. The circular tube of the blade frame provides torsional stiffness to the composite blade.
    Type: Grant
    Filed: October 29, 2002
    Date of Patent: September 13, 2005
    Assignee: Douglas Dynamics, L.L.C.
    Inventors: Michael Goy, Scott Kluck, Andre LeBlond
  • Patent number: 6928757
    Abstract: In combination a mount frame adapted to be attached to a vehicle and a snowplow assembly. The mount frame comprises a pair of detachable receivers which receive a pair of horns extending rearwardly from the snowplow assembly. The snowplow assembly comprises an A-frame, a trunnion and a lift frame. A blade is attached to the front of the A-frame. A pair of spaced stand assemblies, each including a latching mechanism, support the snowplow assembly when the mount frame is separated from the snowplow assembly. The latching mechanisms secure the snowplow assembly to the mount frame.
    Type: Grant
    Filed: January 9, 2003
    Date of Patent: August 16, 2005
    Assignee: Douglas Dynamics, L.L.C.
    Inventors: David N. Bloxdorf, Chad T. Barker, James R. Doornek, Steven L. Klug, Steven P. Radomski
  • Publication number: 20050120595
    Abstract: In combination a mount frame adapted to be attached to a vehicle and a snowplow assembly. The mount frame comprises a pair of detachable receivers which receive a pair of horns extending rearwardly from the snowplow assembly. The snowplow assembly comprises an A-frame, a trunnion and a lift frame. A blade is attached to the front of the A-frame. A pair of spaced stand assemblies, each including a latching mechanism, support the snowplow assembly when the mount frame is separated from the snowplow assembly. The latching mechanisms secure the snowplow assembly to the mount frame.
    Type: Application
    Filed: January 24, 2005
    Publication date: June 9, 2005
    Applicant: Douglas Dynamics, L.L.C.
    Inventors: David Bloxdorf, Chad Barker, James Doornek, Steven Klug, Steven Radomski