Patents by Inventor Kurt Wengenroth

Kurt Wengenroth 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).

  • Patent number: 5184532
    Abstract: In a shear a workpiece is pressed by a holddown against a stationary blade so as to leave a piece to be cut off projecting past the blade, a movable blade is displaced forward past the stationary blade to cut off the piece, and a cut-off holder is pressed in back against the piece by a fluid-powered holding cylinder and moves back in the direction as the piece is cut off. Pressure is substantially completely relieved in the cylinder as soon as the movable blade starts to cut through the workpiece so that the cut-off holder does not substantially resist forward movement in the cutting direction. The movable blade is pressed forward in the direction against the workpiece by a main cylinder so that pressure in the main cylinder reaches a maximum level just before the movable blade starts to cut through the workpiece. The pressure in the main cylinder is monitored to trigger relief of pressure in the holding cylinder when the monitored pressure starts to decrease from the maximum level.
    Type: Grant
    Filed: January 17, 1992
    Date of Patent: February 9, 1993
    Assignee: Rolf Peddinghaus
    Inventor: Kurt Wengenroth
  • Patent number: 4644836
    Abstract: A punch press has a vertically reciprocating plunger, and a die punch exchangeably secured at the plunger by means of a tool exchange device. The die punch has a die head, and the tool exchange device has an exchange insert with guide elements, and a retainer for the die head. The exchange insert is mountable in a holding annulus having guide elements which correspond complementary to the guide elements of the exchange insert. The die punch can be clamped by way of a clamping device against an abutment bearing. The abutment bearing is formed at the bottom side of a piston which is positively connected to the plunger. The piston forms part of the clamping device and has a shoulder surrounded at least over the extent thereof by the cylinder of a cylinder chamber of the clamping device and formed by a holding annulus. The holding annulus, in turn, is vertically adjustably connectable to the plunger by at least one reset spring and at least one guide rod.
    Type: Grant
    Filed: June 27, 1985
    Date of Patent: February 24, 1987
    Assignee: Rolf Peddinghaus
    Inventors: Joachim Wepner, Kurt Wengenroth
  • Patent number: 4635512
    Abstract: A shear for cutting a stock between a feed conveyor and a discharge conveyor has a pair of rollers which can engage the stock when the movable blade is in its upper position, the slide having a stroke equal to the distance by which the discharge conveyor is located below the feed conveyor.
    Type: Grant
    Filed: January 25, 1985
    Date of Patent: January 13, 1987
    Assignee: Carl Ulrich Peddinghaus
    Inventors: Kurt Wengenroth, Siegfried Klaus
  • Patent number: 4339972
    Abstract: A method and apparatus for the accurate volumetric subdivision of conveyed bar-shaped material such as bar steel or billets, using measurements of the bar's cross-sectional area.
    Type: Grant
    Filed: March 19, 1980
    Date of Patent: July 20, 1982
    Assignee: Rolf Peddinghaus
    Inventors: Joachim Wepner, Kurt Wengenroth, Jochen Zuhlke
  • Patent number: 4319504
    Abstract: Apparatus is provided for damping a billet shears assembly and includes a damping cylinder and piston mounted to the stationary portion of the assembly opposite the moving shear blade. The damping piston defines a control cylinder and the base of the damping cylinder carries a control piston adjustably fixed in the control cylinder in axial alignment with the damping piston over the entire stroke distance. A pneumatic fluid supply line in the control piston connects the damping cylinder with the control cylinder and is provided with a non-return valve.
    Type: Grant
    Filed: February 25, 1980
    Date of Patent: March 16, 1982
    Assignee: Rolf Peddinghaus
    Inventors: Joachim Wepner, Kurt Wengenroth