Abstract: A garden bench board made of a plastic material, particularly of recyclable plastic material, having a reinforcement which is embedded into the plastic material to prevent bending, includes one deformable zone respectively provided preferably at the longitudinal-side ends of the reinforcement so that a warping of the garden bench board or a tearing-apart of the sheathing is reliably avoided.
Type:
Grant
Filed:
April 6, 1990
Date of Patent:
December 24, 1991
Assignee:
Dr. Spiess Kunstoff-Recycling GmbH & Co.
Abstract: A grid plate includes a top side having a non-slip surface having openings to permit the growth of grass. At two sides which are arranged at an angle with respect to one another, the grid plate is provided with step-shaped lateral side walls. An abutment is molded into the vertical stepped wall, this abutment being formed by wall apertures placed into the step-shaped lateral side wall. A horizontal stepped side is used for supporting the side edges which project beyond the ribbing of the bottom side. At the lateral edge, plug-in connections are molded on, which, in the manner of hinges, lock into the wall apertures of an adjacent grid plate. The lateral edge has hooks which point downward and which, during the hinge movement, when the grid plates are emplaced, engage behind the wall of the wall apertures.
Type:
Grant
Filed:
November 15, 1988
Date of Patent:
April 17, 1990
Assignee:
Dr. Spiess Kunstoff-Recycling GmbH Co.
Inventors:
Karl Haberhauer, Wolfgang Schibalski, Walter Burcky, Theo Rydman
Abstract: A grid plate of plastic material, with a rough, slippage-impairing top side and a rib-reinforced bottom side. The individual grid plates are kept together by a lockable, but again disconnectable, plug-in connection. The grid plates serve as fastening elements for parking places, road embankments, road ramps, and the like.
Type:
Grant
Filed:
November 2, 1987
Date of Patent:
May 2, 1989
Assignee:
Spiess Kunstoff-Recycling GmbH & Co.
Inventors:
Karl Haberhauer, Klaus D. Feyerabend, Bruno Heitzmann, Alfred Lieberenz, Harry Schimmel