Patents by Inventor Peter Grund

Peter Grund 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).

  • Centrifugal throwing wheel for ejection of blasting materials onto workpieces
    Patent number: 4521996
    Abstract: A centrifugal throwing blast wheel is made of two discs which are spaced from each to form a V-shaped outwardly widening slot forming an angle .alpha.. Sets of diametrically opposed ejection vanes are between the discs. One set has straight throwing faces. Another set has concave faces with a curvature axis inclined toward the plane of rotation at an acute angle greater than .alpha./2. A third set has curved faces inclined toward the other side of the plane of rotation.
    Type: Grant
    Filed: March 19, 1984
    Date of Patent: June 11, 1985
    Assignee: Messer Griesheim GmbH
    Inventors: Peter Grund, Peter Holz
  • Device for deburring workpieces
    Patent number: 4164103
    Abstract: A device for deburring workpieces of rubber or plastic or the like includes an insulated chamber through which the workpieces traverse and a centrifugal throwing wheel for projected granulated material therefrom and means for embrittling the burrs of the workpieces with the blower having a vertical axis of rotation and projecting the granulated material horizontally therefrom and having a conical deflector in the blasting plane opening downwardly toward the workpieces.
    Type: Grant
    Filed: October 17, 1977
    Date of Patent: August 14, 1979
    Assignee: Messer Griesheim GmbH
    Inventors: Jurgen Hesse, Peter Grund
  • Device for removing burrs from workpieces
    Patent number: 4030247
    Abstract: Burrs are removed from workpieces by cold embrittlement in an axisymmetrical container having a rotatable bottom with stationary sides and with the liquefied gas being supplied along the axis of rotation of the bottom. The rotational axis is inclined 5.degree. to 25.degree. with respect to the vertical and the bottom wall is conical with a cone angle of 130.degree.-170.degree..
    Type: Grant
    Filed: April 14, 1976
    Date of Patent: June 21, 1977
    Assignee: Messer Griesheim GmbH
    Inventors: Peter Grund, Jurgen Schmidt, Jurgen Hesse
  • Method and device for removal of fins from workpieces
    Patent number: 4011691
    Abstract: Fins or ridges are removed from molded workpieces by insertion into a rotating drum where they are subjected to the action of free hanging chains each mounted at one of its ends to the inner wall of the drum. Each chain has a length no greater than the inside diameter of the drum.
    Type: Grant
    Filed: July 9, 1975
    Date of Patent: March 15, 1977
    Assignee: Messer Griesheim GmbH
    Inventor: Peter Grund