Walled Enclosure (e.g., Racquetball Or Paddle Tennis Court, Etc.) Patents (Class 472/94)
  • Patent number: 5228253
    Abstract: A modular floor tile with shock absorbing properties has a semi rigid cellular structure made up of vertical ribs joined at the top by a horizontal flexible mat and adapted to undergo relative deformation in compression in response to a vertical load.
    Type: Grant
    Filed: July 11, 1991
    Date of Patent: July 20, 1993
    Assignee: Usines Gabriel Wattelez S.A.
    Inventor: Denis Wattelez
  • Patent number: 5183438
    Abstract: A general-purpose sports floor is installed on a supporting substructure composed of stone-like materials or other compositions of materials such as a wooden floor or stabilized sand. In order that the sports floor meets the highest requirements with respect to sports serviceability, lowest risk of injury to the sportsman or sportswoman, mechanical strength and durability it is composed at least of a combination of the following layers or composite layers:1. at least one relatively thin polyurethane top layer with a covering producing friction for the sportsman or sportswoman;2. at least one hard elastic layer formed from granules or rubber particles and air cavities present between said particles;3. at least one relatively thin force-distributing hard layer made, for example, of plywood or hard plastic;4. at least one relatively thick layer made of plastic foam.
    Type: Grant
    Filed: April 17, 1991
    Date of Patent: February 2, 1993
    Assignee: Hollandsche Beton Groep Nov.
    Inventor: Jan Blom
  • Patent number: 5139471
    Abstract: A miniature courtyard apparatus provides a slanted lane for rolling a ball. A generally planar plate forms the floor. Legs are mounted to the lower surface of the plate adjacent to the rear edge for elevating the rear edge of the plate at a slope of about ten percent. The wall is fixedly attached to the plate to extend upwardly from the rear edge and a portion of the left and the right edges for preventing a ball rolled on the plate from travelling beyond the associated edges. The plate extends beyond the wall adjacent to the front edge. A bridge or cover is mounted on the wall to extend over the rear edge of the plate between the left and right edges. A bell is suspended from the cover generally centrally between the left and right edges in a position to be contacted by the ball when rolled along the plate upper surface. A resilient fabric covers the front edge of the plate. Canes may be mounted to the sides of the front to provide support to a user. The ball may be tethered to the ramp.
    Type: Grant
    Filed: February 12, 1991
    Date of Patent: August 18, 1992
    Inventor: Sharon A. Dornberger