Patents by Inventor David A. Doerflinger

David A. Doerflinger 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: 20080143150
    Abstract: A brake system for a vehicle having a plurality of wheels and a frame comprising a mechanically actuated braking assembly operably coupled with at least one of the wheels and being operable between braking and non-braking conditions, a handle coupled to the braking assembly and being mounted to the frame for pivotal movement about a substantially horizontal axis between first and second positions in each of which the braking assembly is in the braking condition, and an actuating mechanism responsive to movement of the handle from either of the first and second positions for actuating the braking assembly into the non-braking condition.
    Type: Application
    Filed: February 25, 2008
    Publication date: June 19, 2008
    Inventors: David A. Doerflinger, Daniel Guptail
  • Publication number: 20070007090
    Abstract: A brake system for a vehicle having a plurality of wheels and a frame comprising a mechanically actuated braking assembly operably coupled with at least one of the wheels and being operable between braking and non-braking conditions, a handle coupled to the braking assembly and being mounted to the frame for pivotal movement about a substantially horizontal axis between first and second positions in each of which the braking assembly is in the braking condition, and an actuating mechanism responsive to movement of the handle from either of the first and second positions for actuating the braking assembly into the non-braking condition.
    Type: Application
    Filed: September 14, 2006
    Publication date: January 11, 2007
    Inventors: David Doerflinger, Daniel Guptail
  • Patent number: 7124859
    Abstract: A brake system for a vehicle having a plurality of wheels and a frame comprising a mechanically actuated braking assembly operably coupled with at least one of the wheels and being operable between braking and non-braking conditions, a handle coupled to the braking assembly and being mounted to the frame for pivotal movement about a substantially horizontal axis between first and second positions in each of which the braking assembly is in the braking condition, and an actuating mechanism responsive to movement of the handle from either of the first and second positions for actuating the braking assembly into the non-braking condition.
    Type: Grant
    Filed: April 15, 2004
    Date of Patent: October 24, 2006
    Assignee: Snap-on Incorporated
    Inventors: David A. Doerflinger, Daniel Guptail
  • Patent number: 7008031
    Abstract: An improved method and apparatus of attaching upper and lower component members of a tool storage assembly. The method and apparatus comprises at least one aperture located on a top ceiling portion of the lower component member, an L-shaped attachment bracket with its short leg penetrating the apertures in the ceiling portion, a supporting means on the bottom of the upper component member, and a fastening means for securing a long leg of the L-shaped attachment bracket to the supporting means.
    Type: Grant
    Filed: October 25, 2002
    Date of Patent: March 7, 2006
    Assignee: Snap-on Incorporated
    Inventors: David A. Doerflinger, Daniel B. Guptail
  • Publication number: 20050115776
    Abstract: A brake system for a vehicle having a plurality of wheels and a frame comprising a mechanically actuated braking assembly operably coupled with at least one of the wheels and being operable between braking and non-braking conditions, a handle coupled to the braking assembly and being mounted to the frame for pivotal movement about a substantially horizontal axis between first and second positions in each of which the braking assembly is in the braking condition, and an actuating mechanism responsive to movement of the handle from either of the first and second positions for actuating the braking assembly into the non-braking condition.
    Type: Application
    Filed: April 15, 2004
    Publication date: June 2, 2005
    Inventors: David Doerflinger, Daniel Guptail
  • Publication number: 20040119380
    Abstract: An improved method and apparatus of attaching upper and lower component members of a tool storage assembly. The method and apparatus comprises at least one aperture located on a top ceiling portion of the lower component member, an L-shaped attachment bracket with its short leg penetrating the apertures in the ceiling portion, a supporting means on the bottom of the upper component member, and a fastening means for securing a long leg of the L-shaped attachment bracket to the supporting means.
    Type: Application
    Filed: October 25, 2002
    Publication date: June 24, 2004
    Inventors: David A. Doerflinger, Daniel B. Guptail
  • Patent number: 6698171
    Abstract: A lawnmower with a tractor and a gang of mowers pivotally supported by the tractor for up and down motion when moving on the ground is provided. A mower support arm is pivoted on the tractor and has a pivot axis for each of the mowers, and a camming action is created by the up and down mower movement and that causes the pivot axis to move horizontally relative to the tractor to thereby avoid having the mowers move horizontally, and it maintains a constant spacing between the mowers and avoids having the mowers collide when moving up and down. Shorter length mowers can thus be used in the gang, thereby following the ground contour more closely.
    Type: Grant
    Filed: July 1, 2002
    Date of Patent: March 2, 2004
    Assignee: Textron Inc.
    Inventor: David A. Doerflinger
  • Publication number: 20020184866
    Abstract: A lawnmower with a tractor and a gang of mowers pivotally supported by the tractor for up and down motion when moving on the ground. A mower support arm is pivoted on the tractor and has a pivot axis for each of the mowers, and a camming action is created by the up and down mower movement and that causes the pivot axis to move horizontally relative to the tractor to thereby avoid having the mowers move horizontally, and it maintains a constant spacing between the mowers and avoids having the mowers collide when moving up and down. Shorter length mowers can thus be used in the gang and they follow the ground contour more closely.
    Type: Application
    Filed: July 1, 2002
    Publication date: December 12, 2002
    Inventor: David A. Doerflinger
  • Patent number: 6412258
    Abstract: A lawnmower with a tractor and a gang of mowers pivotally supported by the tractor for up and down motion when moving on the ground. A mower support arm is pivoted on the tractor and has a pivot axis for each of the mowers, and a camming action is created by the up and down mower movement and that causes the pivot axis to move horizontally relative to the tractor to thereby avoid having the mowers move horizontally, and it maintains a constant spacing between the mowers and avoids having the mowers collide when moving up and down. Shorter length mowers can thus be used in the gang and they follow the ground contour more closely.
    Type: Grant
    Filed: August 31, 2000
    Date of Patent: July 2, 2002
    Assignee: Textron Inc.
    Inventor: David A. Doerflinger