Patents by Inventor James R. Doornek
James R. Doornek 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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Patent number: 6928757Abstract: 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: GrantFiled: January 9, 2003Date of Patent: August 16, 2005Assignee: Douglas Dynamics, L.L.C.Inventors: David N. Bloxdorf, Chad T. Barker, James R. Doornek, Steven L. Klug, Steven P. Radomski
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Publication number: 20040172858Abstract: 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: ApplicationFiled: March 19, 2004Publication date: September 9, 2004Applicant: Douglas Dynamics, Inc.Inventors: David N. Bloxdorf, Chad T. Barker, James R. Doornek, Steven L. Klug, Steven P. Radomski
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Patent number: 6711837Abstract: 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: GrantFiled: February 28, 2003Date of Patent: March 30, 2004Assignee: Douglas Dynamics, L.L.C.Inventors: David N. Bloxdorf, Chad T. Barker, James R. Doornek, Steven L. Klug, Steven P. Radomski
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Publication number: 20030140529Abstract: 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: ApplicationFiled: February 28, 2003Publication date: July 31, 2003Applicant: Douglas Dynamics Inc.Inventors: David N. Bloxdorf, Chad T. Barker, James R. Doornek, Steven L. Klug, Steven P. Radomski
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Publication number: 20030093927Abstract: 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: ApplicationFiled: January 9, 2003Publication date: May 22, 2003Applicant: Douglas Dynamics, Inc.Inventors: David N. Bloxdorf, Chad T. Barker, James R. Doornek, Steven L. Klug, Steven P. Radomski
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Patent number: 6526677Abstract: 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: GrantFiled: October 6, 2000Date of Patent: March 4, 2003Assignee: Douglas Dynamics, L.L.C.Inventors: David N. Bloxdorf, Chad T. Barker, James R. Doornek, Steven L. Klug, Steven P. Radomski
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Patent number: 6050008Abstract: A vehicle mounted accessory unit assembly is provided that is removably mountable to a vehicle, the accessory assembly including a support frame having a first and second portion that are connected at a pivot point, with the pivot point enabling forces to be directed in such a way as to minimize the stresses on the vehicle to which the accessory unit assembly is attached. The accessory unit assembly further includes a wheel assembly to further minimize the stresses on the vehicle. The wheel assembly preferably includes a ground engaging wheel, a mounting member, a spring assembly and a dampener. A steering dampener is also utilized.Type: GrantFiled: September 12, 1997Date of Patent: April 18, 2000Assignee: Douglas Dynamics, L.L.C.Inventors: James R. Doornek, Steven L. Klug, Gerald E. Lutzke, Chad T. Barker, Christian T. Nielsen
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Patent number: 5806213Abstract: A snowplow (20) adapted for being attached to or detached from a vehicle (22) having a frame (24). The snowplow includes a mount frame (26) for connection to the vehicle frame, a support frame (32), a lift assembly (38) and a blade assembly. The blade assembly of the invention includes a blade (30), a blade cutting edge (31) and a wheel support assembly (56). The support frame includes a forward end (33) for supporting the blade and a rearward end (36) for connection to the vehicle. When detached from the vehicle as a single unit, the resultant weight on the rearward end of the support frame may be supported on a ground surface (46) by a jack stand (48).Type: GrantFiled: January 6, 1997Date of Patent: September 15, 1998Assignee: Douglas Dynamics, L.L.C.Inventors: James R. Doornek, Gerald E. Lutzke
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Patent number: 5806214Abstract: A snowplow (20) adapted for being attached or detached from a vehicle (22) having a frame (24). The snowplow includes a mount frame (26) for connection to the vehicle frame, a support frame (32), a lift assembly (38) and a blade assembly. The blade assembly includes a blade (30), a blade cutting edge (31) and a wheel support assembly (56). The support frame includes a forward end (33) for supporting the blade and a rearward end (36) for connection to the vehicle. When detached from the vehicle as a single unit, the resultant weight on the rearward end of the support frame is supported on a ground surface (46) by a jack stand (48). The wheel support assembly is mounted adjacent to or slightly ahead of a center of gravity (58).Type: GrantFiled: January 6, 1997Date of Patent: September 15, 1998Assignee: Douglas Dynamics, L.L.C.Inventors: John R. Behrens, James R. Doornek, Gerald E. Lutzke
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Patent number: 5501405Abstract: A dispenser apparatus for spreading granular material such as salt or sand. The dispenser apparatus includes a hopper that funnels the granular material down to a discharge spout for discharge onto a rotating spreader to broadcast the material onto a roadway. The hopper defines a generally downwardly converging chute that has intermittent radially enlarged sections to minimize "bridging" of the granular material within the hopper. An agitator arrangement provided in the hopper also assists in eliminating any blockage near the base of the hopper.Type: GrantFiled: July 5, 1994Date of Patent: March 26, 1996Assignee: Douglas Dynamics, Inc.Inventor: James R. Doornek
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Patent number: 5420480Abstract: The invention contemplates an automatic headlamp switching system that enables an operator to use an existing vehicle headlamp switch to operate a secondary light source on an accessory unit attached to a vehicle. The vehicle includes a primary circuit having a primary light source, an energy source, and a parking/headlamp switch for connecting the energy source and the primary light source so that the primary light source is selectively energizable. A secondary circuit includes the secondary light source. A pair of relays are connectable in circuit with the primary and secondary light sources. When the accessory unit is electrically connected to the vehicle, the relays are operative to interrupt the primary circuit from the energy source to the primary light source and simultaneously complete the secondary circuit from the energy source to the secondary light source.Type: GrantFiled: July 31, 1992Date of Patent: May 30, 1995Assignee: Douglas Dynamics, Inc.Inventors: Allen R. Knepel, James R. Doornek
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Patent number: 4481988Abstract: A log splitter comprising a frame generally in the shape of a right triangle having three legs lying in a vertical plane. The frame includes an elongated horizontal member forming the first leg of the right triangle, the elongated horizontal member including a first end, a second end, and an upper surface adapted to support a log. The frame also includes an elongated second member forming the hypotenuse of the right triangle and being positioned below the elongated horizontal member, the elongated second member including a first end and a second end. The first end of the elongated second member is fixedly attached to the first end of the elongated horizontal member. The second end of the elongated second member is adapted to rest on a supporting surface.Type: GrantFiled: November 14, 1983Date of Patent: November 13, 1984Assignee: Douglas Dynamics, Inc.Inventors: Gary E. Watson, James R. Doornek
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Patent number: RE35700Abstract: A detachable snowplow blade lift assembly including a .?.mount.!. .Iadd.mounting .Iaddend.frame permanently connected to the vehicle frame. A snowplow assembly including an A-frame and a snowplow blade mounted on the A-frame is pivotally connected to the .?.mount.!. .Iadd.mounting .Iaddend.frame. A lift frame assembly including a lift actuator mechanism for raising and lowering the A-frame and snowplow blade is pivotally connected to the A-frame for rotation about a pivot axis. The snowplow blade lift assembly also includes a mounting arrangement for releasably connecting the A-frame and lift frame as a unit to the vehicle for pivotable movement of the A-frame relative to the vehicle and to the lift frame about the pivot axis. The A-frame mount affording pivotal movement of the A-frame and the lift frame about a common pivot axis provides a snowplow blade lift assembly which can be attached to, and detached from, the mounting frame as a unit and which has the capacity to stack snow.Type: GrantFiled: December 1, 1995Date of Patent: December 30, 1997Assignee: Douglas Dynamics, L.L.C.Inventors: Gary E. Watson, James R. Doornek, Thomas P. Fechter