A - Human Necessities – 63 – C
Patent
A - Human Necessities
63
C
273/6
A63C 19/00 (2006.01)
Patent
CA 1310025
ABSTRACT The invention discloses a surface unit to be mounted on the surface of peripheral wall of a tennis court field having a plurality of tonnis courts without patition between one court and the other, by which it is prevented as much as possible that a tennis ball, once sent obliquely over to either side of the surface of the wall rearward of the back line and run against it, rebounds and runs in the adjacent court, and by which the tennis ball rebounds back to the original court where game is going on. The surface unit comprises a plurality of repelling members of rebound-reducing material formed into elongated triangular poles of isosceles triangle in cross section, the plurality of repelling members being installed in parallel on a surface of a peripheral wall of a tennis court field in such a manner that longitudial direction of each repelling member extends vertically, that sides opposed to ridge lines each formed by joining two sides of the repelling member are brought into contact with the surface of the peripheral wall either directly or through a sheet member, and that a distance between one ridge line and the other in the repelling members adjacent to each other is so established as to be equal to or not shorter than diameter of tennis ball.
566532
Marks & Clerk
Suga Tamio
LandOfFree
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