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US 2009/0014369 A1Published application
Friction profile for the top of pool grate bars
OwnerRobert B. Lawsoninventor
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OwnerRobert B. Lawsoninventor
Estimating the term…
An inventive top profile design of friction ridges on top of grate bars in a swimming pool. The profiles exhibit a multiple of right angled friction ridges which are stacked within each other in a direction which is perpendicular to the longitudinal direction of the grate bars. The right angled ridges resemble the well known chevron format. The right angled friction ridges increase the coefficient of friction to above 1.0 ASTM. The design of the friction ridges drains off water quickly and reduces the travel time of water the grate bars. The design also prevents stagnant water forming any mold formation. The tops of the friction ridges are rounded so that no sharp edges are present to enhance the comfort under the bare feet.
A top profile design for grate bars in a swimming pool, said grate bars are supported by perpendicular support bars, said design exhibiting right angled friction ridges which are stacked relative to each other in a direction which is perpendicular to a longitudinal direction of the grate bars to thereby represent the form of a chevron.
Dependencies are inferred from the claim text.