Patents by Inventor Andreas Dierolf

Andreas Dierolf 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).

  • Anti-Rolling Socket
    Publication number: 20120031242
    Abstract: An anti-rolling socket includes ribs extending thereon in parallel to an axis thereof. Two adjacent ones of the ribs are in contact with a planar face when the anti-rolling socket is laid on the planar face. In an aspect, the ribs are merged with the anti-rolling socket. In another aspect, the ribs are formed on a ring located on the anti-rolling socket.
    Type: Application
    Filed: August 4, 2010
    Publication date: February 9, 2012
    Inventors: Yi-Min Li, Andreas Dierolf
  • Handle for a hand tool and method for the manufacture thereof
    Patent number: 6749790
    Abstract: The invention relates to a handle for a hand tool and a method for the manufacture of the handle. The problem of the invention is to provide a handle for a hand tool, whose surface is formed from areas of distinguishable materials and which simultaneously has a good and pleasant grippability. A handle according to the invention for a hand tool, particularly a turning tool, is made from plastic. It has a surface from flush-connected areas of distinguishable materials. The two materials can be distinguished from one another.
    Type: Grant
    Filed: November 16, 2000
    Date of Patent: June 15, 2004
    Assignee: Adolf Wurth GmbH & Co. KG
    Inventors: Karl Lieser, Andreas Dierolf
  • Spanner
    Publication number: 20040040420
    Abstract: The invention relates to a spanner or wrench with a shank on whose one end is located a head. In said head is provided a drive for a tool. The drive recess receives the shank of a screwdriver bit and is provided with a closed base.
    Type: Application
    Filed: June 19, 2003
    Publication date: March 4, 2004
    Inventor: Andreas Dierolf
  • Device for connecting a tool to a drive
    Patent number: 6640911
    Abstract: A device for connecting a tool to a mechanical drive contains as the coupling element a spring washer coupling or clutch, which is made in one piece from metal and at least in the rotation direction has a limited resilience. Use is made thereof for preventing torque peaks in the case of a sudden deceleration of the tool, e.g. if a screw strikes a wood surface.
    Type: Grant
    Filed: May 25, 2001
    Date of Patent: November 4, 2003
    Assignee: Adolf Wuerth GmbH & Co. KG
    Inventors: Karl Lieser, Andreas Dierolf, Frank Kollmar
  • Handle for a tool
    Patent number: 6629338
    Abstract: The invention proposes a handle for a screwdriver or a similar tool, which over a significant part of its length has a cross-section in the form of an approximately regular pentagon. The corner or angle sections are rounded with a radius of curvature, whose centre is in the longitudinal axis of the tool handle. The corner sections formed by the curved part of the cross-section have a different width over the handle length. The shape of the flattenings does not follow the shape of the handle contour.
    Type: Grant
    Filed: September 12, 2001
    Date of Patent: October 7, 2003
    Assignee: Adolf Wuerth GmbH & Co. KG
    Inventors: Andreas Dierolf, Karl Lieser
  • Handle for a two-limbed tool
    Publication number: 20030136236
    Abstract: Pliers contain on both pliers limbs a pliers handle, which is injection moulded round the corresponding metal pliers limbs. Injection moulding on takes place at a point located at the handle end facing the pliers joint. As a result the entire surface of the handle, which can be gripped by a user, remains free from surface disturbances and interference. A raised marking can be applied to the mould-on point.
    Type: Application
    Filed: October 28, 2002
    Publication date: July 24, 2003
    Inventors: Andreas Dierolf, Karl Lieser
  • Handle for a tool
    Publication number: 20020133911
    Abstract: The invention proposes a handle for a screwdriver or a similar tool, which over a significant part of its length has a cross-section in the form of an approximately regular pentagon. The corner or angle sections are rounded with a radius of curvature, whose centre is in the longitudinal axis of the tool handle. The corner sections formed by the curved part of the cross-section have a different width over the handle length. The shape of the flattenings does not follow the shape of the handle contour.
    Type: Application
    Filed: September 12, 2001
    Publication date: September 26, 2002
    Inventors: Andreas Dierolf, Karl Lieser
  • Device for connecting a tool to a drive
    Publication number: 20020000334
    Abstract: A device for connecting a tool to a mechanical drive contains as the coupling element a spring washer coupling or clutch, which is made in one piece from metal and at least in the rotation direction has a limited resilience. Use is made thereof for preventing torque peaks in the case of a sudden deceleration of the tool, e.g. if a screw strikes a wood surface.
    Type: Application
    Filed: May 25, 2001
    Publication date: January 3, 2002
    Inventors: Karl Lieser, Andreas Dierolf, Frank Kollmar
  • Handle for a hand tool, especially for a screw driver
    Patent number: D445658
    Type: Grant
    Filed: September 1, 2000
    Date of Patent: July 31, 2001
    Assignee: Adolf Wurth GmbH & Co. KG
    Inventor: Andreas Dierolf
  • Socket
    Patent number: D632148
    Type: Grant
    Filed: August 4, 2010
    Date of Patent: February 8, 2011
    Assignee: Cendai Industrial Co., Ltd.
    Inventors: Yi-Min Li, Andreas Dierolf
  • Socket
    Patent number: D632149
    Type: Grant
    Filed: August 4, 2010
    Date of Patent: February 8, 2011
    Assignee: Cendai Industrial Co., Ltd.
    Inventors: Yi-Min Li, Andreas Dierolf
  • Socket
    Patent number: D637051
    Type: Grant
    Filed: August 4, 2010
    Date of Patent: May 3, 2011
    Inventors: Yi-Min Li, Andreas Dierolf
  • Combination socket-wrench handle and hammer
    Patent number: D724406
    Type: Grant
    Filed: June 7, 2013
    Date of Patent: March 17, 2015
    Assignee: Wuerth International AG
    Inventors: Andreas Dierolf, Alexander Daus, Frank Kollmar, Markus Kuehner