Patents Assigned to Westerwald AG fur Silikatindustrie
  • Glass block for use as a cornerstone or an end block
    Patent number: 5109644
    Abstract: A glass block (10) consists of two halves (12,14) fused together along a vertical center plane (11) of the block and having planar inclined surfaces (22,24) at a vertically extending end face (42), the inclined surfaces forming an angle of 45.degree. with the vertical center plane (11). The opposite vertical end face (44) of the glass block is substantially flat. The inclined surfaces (22, 24) extend up to the vertical center plane (11) of the glass block so as to make the same suitable for use as a cornerstone and as an end block.
    Type: Grant
    Filed: February 7, 1991
    Date of Patent: May 5, 1992
    Assignee: Westerwald AG fur Silikatindustrie
    Inventor: Hans-Herbert Poremba
  • Corner glass block
    Patent number: 4636413
    Abstract: A glass block has at least approximately the shape of a sector of a circular cylinder, the side faces forming the sector of the circular cylinder and containing the axis of the cylinder, preferably including an angle of 45.degree. or 90.degree.. The side faces defining the sector of the cylinder and containing the axis of the cylinder are formed with a recess to take up mortar, cement or the like used in bricklaying a wall made of glass blocks.
    Type: Grant
    Filed: December 11, 1985
    Date of Patent: January 13, 1987
    Assignee: Westerwald AG fur Silikatindustrie
    Inventors: Bernd Wittmann, Eberhard Hayn