Patents by Inventor Wolfgang Bertleff

Wolfgang Bertleff 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: 20130139498
    Abstract: A control apparatus for a first and a second tool (1, 2) operated by means of a pressure medium, in particular hydraulic oil, includes a first supply circuit (3) for the first tool (1) and a second supply circuit (4) for the second tool (2). The control apparatus can be connected to a first pressure line (20) and to a second pressure line (21) of a control device to be operated manually, by which control device the flow rate at the first tool (1) and at the second tool (2) can be changed.
    Type: Application
    Filed: August 10, 2011
    Publication date: June 6, 2013
    Applicant: LUKAS HYDRAULIK GMBH
    Inventors: Wolfgang Bertleff, Carsten Sauerbier
  • Patent number: 7451960
    Abstract: The invention relates to an apparatus for supporting a tool on an object. The apparatus has a frame and ways on the frame for fixing the apparatus to the object. The tool is attached to the apparatus and the latter supports itself against the object In addition, the frame displays an upper and a lower support claw that are effective even in an inclined disposition with respect to the object. The frame including the upper and lower support claws further forms a C-shape. Moreover, the upper as well as lower support claws are designed such tat the holding effect during loading of the apparatus arises through the canting of the two support claws with respect to a portion of the object located between the two support claws.
    Type: Grant
    Filed: July 20, 2004
    Date of Patent: November 18, 2008
    Assignee: Lukas Hydraulik GmbH
    Inventors: Uwe Kirchner, Wolfgang Bertleff
  • Patent number: 7409828
    Abstract: Control device 1 having a changeover valve 5, a pump 4 delivering operating medium, in particular a motor-operated pump or a hand pump, connection devices for connecting the control device 1 to at least two tools, in particular a first lifting cylinder 2 and a second lifting cylinder 3 or the like, the changeover valve 5 being operable in particular by hand; wherein a) the changeover valve 5, when the operator lets go of it, can be brought automatically into a basic position in which no pressure build-up in the region of the tools is possible, b) a control valve 7 is provided between the changeover valve 5 and the tools, and c) the control valve 7 can likewise be operated by hand by an operator.
    Type: Grant
    Filed: October 14, 2005
    Date of Patent: August 12, 2008
    Assignee: Lukas Hydraulik GmbH
    Inventor: Wolfgang Bertleff
  • Publication number: 20060081120
    Abstract: Control device 1 having a changeover valve 5, a pump 4 delivering operating medium, in particular a motor-operated pump or a hand pump, connection devices for connecting the control device 1 to at least two tools, in particular a first lifting cylinder 2 and a second lifting cylinder 3 or the like, the changeover valve 5 being operable in particular by hand; wherein a) the changeover valve 5, when the operator lets go of it, can be brought automatically into a basic position in which no pressure build-up in the region of the tools is possible, b) a control valve 7 is provided between the changeover valve 5 and the tools, and c) the control valve 7 can likewise be operated by hand by an operator.
    Type: Application
    Filed: October 14, 2005
    Publication date: April 20, 2006
    Applicant: LUKAS Hydraulik GmbH
    Inventor: Wolfgang Bertleff
  • Patent number: 6959816
    Abstract: A distribution switch for sorting and guiding parts, particularly workpieces made of plastic, includes rods which are movable axially parallel to one another. The rods define paths which guide the parts in question into at least two different receiving elements while either forming a slope or leaving an opening in the center, depending on a predeterminable position of the rods. The rods correspond with guide elements through which they are movable substantially horizontally, in that drive units are provided, by which means the rods can be moved independently toward one another or away from one another along their longitudinal axes, and in that the lines can be changed in length depending on the position of the rods.
    Type: Grant
    Filed: June 20, 2001
    Date of Patent: November 1, 2005
    Assignee: Demag Ergotech GmbH
    Inventor: Wolfgang Bertleff
  • Publication number: 20050109995
    Abstract: The invention relates to a support apparatus for supporting a tool, especially a rescue tool as, for example, a spreading cylinder or the like, on an object, especially a vehicle part, which support apparatus has a frame and means on the frame for fixing the support apparatus to the object, wherein the tool is attached to the support apparatus and the latter supports itself against the object, wherein the frame 2 displays an upper 3 and a lower support claw 4 that are effective even in an inclined disposition with respect to the object, the frame 2 including the upper and lower support claws 3, 4 forms a C-shape, and the upper as well as lower support claws 3, 4 are designed such that the holding effect during loading of the support apparatus arises through the canting of the two support claws 3, 4 with respect to a portion of the object located between the two support claws 3, 4.
    Type: Application
    Filed: July 20, 2004
    Publication date: May 26, 2005
    Applicant: LUKAS HYDRAULIK GMBH
    Inventors: Uwe Kirchner, Wolfgang Bertleff
  • Publication number: 20040016678
    Abstract: A distribution switch for sorting and guiding parts, particularly workpieces made of plastic, includes rods which are movable axially parallel to one another. The rods define paths which guide the parts in question into at least two different receiving elements while either forming a slope or leaving an opening in the center, depending on a predeterminable position of the rods. The rods correspond with guide elements through which they are movable substantially horizontally, in that drive units are provided, by which means the rods can be moved independently toward one another or away from one another along their longitudinal axes, and in that the lines can be changed in length depending on the position of the rods.
    Type: Application
    Filed: January 10, 2003
    Publication date: January 29, 2004
    Inventor: Wolfgang Bertleff
  • Patent number: 5407083
    Abstract: An apparatus for sorting and essentially vertically guiding workpieces, particularly products of plastics material is arranged between a production machine and at least two subsequently arranged units for producing, conveying or storing. A hopper which can be fastened in a simple manner is arranged in the area in which the workpieces are dropped vertically from the production machine, A frame which is rotatable about a horizontal axis of rotation is mounted at the hopper opening. Webs are fastened to sides of the frame which extend parallel to the axis of rotation. The other ends of the webs are connected to rods arranged spaced from the opening of the hopper. By rotating the frame about its axis of rotation, the webs can be stretched in such a way that an inclined plane is formed along which the workpieces are conveyed in a sliding manner to the subsequently arranged units.
    Type: Grant
    Filed: September 21, 1993
    Date of Patent: April 18, 1995
    Assignee: Mannesmann Aktiengesellschaft
    Inventor: Wolfgang Bertleff
  • Patent number: 5302105
    Abstract: A method for changing of mold blocks on an injection molding machine, in which the mold block can be clamped in a centered position between a movable clamping plate and a fixed clamping plate and, for replacement of the mold, can be moved out of the machine parallel to the clamping surface. Upon the installation of the mold, the mold block is initially substantially restricted in its freedom of movement in the open condition of the clamping plates, in the direction of the center axis and in a direction perpendicular vertically or horizontally thereto. After being restricted in movement, the mold block is gripped from the outside in the direction of the center axis of the injection molding machine in order to avoid possible tilting movements towards the clamping plate and is held in a vertical position with the avoidance of possible tilting movements in the direction of the center axis of the injection molding machine during the movement towards each other of the clamping plates for clamping the mold block.
    Type: Grant
    Filed: May 13, 1992
    Date of Patent: April 12, 1994
    Assignee: Mannesmann Aktiengesellschaft
    Inventor: Wolfgang Bertleff