Patents Assigned to Rolf Scheiwiller
  • Compound pavement stone
    Patent number: 5348417
    Abstract: The side surfaces of compound stones are provided with relatively flat elements which interlock with little play when said stones are laid out, while adjoining side surfaces of neighboring stones are in contact along two lines only. A compromise between a sufficient mutual securement of the stones and a certain mutual mobility thereof is thus obtained. In particular, a certain tilting of neighboring stones with respect to each other is possible, whereby it is possible to produce pavements in uneven places.
    Type: Grant
    Filed: November 30, 1992
    Date of Patent: September 20, 1994
    Assignee: Rolf Scheiwiller
    Inventor: Rene Scheiwiller
  • Paving stone
    Patent number: D434857
    Type: Grant
    Filed: August 22, 1997
    Date of Patent: December 5, 2000
    Assignee: Rolf Scheiwiller
    Inventor: Rene Scheiwiller