Patents Assigned to August Ruggeberg
  • Abrasive wheel
    Patent number: 5649857
    Abstract: A laminated abrasive wheel comprises a central carrying member having two holding flanges between which abrasive laminae assembled to form stacks of abrasive laminae are arranged. On the holding flanges there are fastened respectively alternating studs which are pushed between the stacks of abrasive laminae and which serve to hold them under friction. At the same time, the holding flanges are also connected to the stacks of abrasive laminae to form a unit.
    Type: Grant
    Filed: September 7, 1995
    Date of Patent: July 22, 1997
    Assignee: August Ruggeberg
    Inventors: Rolf Suhrheinrich, Hermann Hardenbicker, Norbert Klein
  • Abrasive wheel for hand-guided grinding machines, in particular abrasive cutting-off wheel
    Patent number: 5584755
    Abstract: An abrasive wheel, in particular an abrasive cutting-off wheel, comprises an annular cylindrical inner support of metal and an abrasive ring surrounding the latter, both being connected with each other. The abrasive ring projects on both sides from the support in the direction of the common axis. The abrasive ring can be ground off completely. The support is re-usable or at least recyclable.
    Type: Grant
    Filed: February 14, 1994
    Date of Patent: December 17, 1996
    Assignee: August Ruggeberg
    Inventors: Peter Alfer, Diethard Sinram, Theodor Schneider
  • Abrasive wheel
    Patent number: 5516326
    Abstract: An abrasive wheel has a central support and an abrasive ring releasably and exchangeably fastened thereto and which on the one hand bears against an annular flange connected with the support and is braced against this by means of a locking ring and a locking flange.
    Type: Grant
    Filed: August 28, 1992
    Date of Patent: May 14, 1996
    Assignee: August Ruggeberg
    Inventor: Karl H. Virnich