Grating for a swimming pool
A grate construction for a swimming pool placed at a top edge of the pool at its water level. The grate consists of a wet deck edging profile having a hollow grate bar at its forward edge. A finger grip groove follows the hollow grate inwardly, that is, away from the edge of the water further inwardly there is a flat section which is fastened to the concrete from which the pool is constructed. The flat section is being fastened to the concrete by way of a lag screw. Also, the flat section has two upstanding hook ribs thereon. Another hollow grate bar has at its bottom side two depending hook ribs thereon. The upstanding hook ribs and the depending hook ribs, when pressed together, will fasten the another hollow grate bar to the flat extension. A connector element will fasten two longitudinal grate bars together to extend its length. The material of the connector element has a different coefficient of expanding or retracting than the material of the grate bars to assure a water tight connection between adjacent structures.
The inventive concept pertains to swimming pool constructions, particularly it is directed to the overflow gutter concept. The over flow concept is increasingly being used in the United States and other countries. This overflow concept is not only being used in large swimming competition pools but also in leisure and residential pools. The perimeter overflow system is often called, deck level, overflow or wet deck. This type of construction involves a gutter which is located around the whole perimeter of the pool and placed at the deck level of the pool so that water can flow into the gutter and a grating covers the gutter opening which grating is placed at the deck level. The grating has to be rigid and strong enough to accommodate foot traffic near the edge of the pool.
Known gratings have connecting stays that run perpendicular to the pool wall. They are extruded, are somewhat flexible and can handle a radius in a pool that has curves therein. Straight grates straight grates are preferred in pools because they are parallel to the edge of the pool have a tendency the flow of water over the grate because the parallel present an obstacle to the water flow. Gratings are normally 12 inches and observations have shown that in this type of grate, the water travels at most over no more than 3 gaps. This way the water disappears quickly into the gutter below the grating resulting in a much dryer deck and resulting in less falls when bare feet move over the deck. Applicant's prior U.S. Pat. No. 6,968,665 is such a disclosure using grating bars that run parallel to the wall of the pool. However, it has been found that the disclosed construction is rather cumbersome and time consuming.
The invention simplifies construction of the pool grate to some great extent in that the pool grating and elements thereof have been extruded and are fastened to the pool side edge of the deck. As explained in the prior Patent, the installation of the grate improves the water flow over the grate while the deck surrounding the pool remains much dryer. The nose of the grating facing the pool has a finger grip groove provided therein which groove runs the full perimeter of the pool and aids the persons in the pool to quickly grab a hold of the deck if so desired.
It can now be seen that the above described pool construction improves the accuracy of the installation. The construction improves the water flow over the grate while the deck surrounding the pool remains much dryer while improving the safety aspect of the users of the pool, especially, with the presence of the finger gripping groove along the edge of the pool. The grate bars disclosed above can easily be extruded because they are made of a plastic material such as PVC.
Claims
1. A grating for a swimming pool constructed of concrete, The grating includes a wet deck edging profile located at a front of said grating facing the pool and at a same height as the level of water in said pool, a hollow grate bar is located at said water level, a finger grip groove is located next to said hollow grate bar in an interior orientation away from said water, said wet deck edging profile continues to extent toward said interior in a flat manner to thereby form a flat extension, a means for fastening is placed through said flat extension and into said concrete, another hollow grate bar is placed over said flat extension and fastened thereto.
2. The grating of claim 1, wherein said means for fastening is a lag screw driven into said concrete.
3. The grating of claim 1, wherein said flat extension has upstanding hooks thereon facing in one direction and said another hollow extension has hooks on its bottom side facing in another direction, whereby, when said hooks are snap-fitted into each other, the another hollow grate bar will be fastened to said flat extension.
4. The grating of claim 1, including a drainage gutter located in said concrete at an interior direction from said wet deck edging profile.
5. The grating of claim 4 including a grating spanning said gutter, said grating having a multiple of grate bars and a multiple of connector bars connecting said grate bars together to form a grid.
6. The grating of claim 1 including a connector element connecting longitudinal grate bars together to extend their lengths.
7. The grating of claim 6, wherein said connector element consists of a central plate having the same top profile as that of said wet deck edging profile.
8. The grating of claim 7, said central plate having grip extension on either side to be pressed into said hollows of said grate bars.
9. The grating of claim 6, wherein the material of said connector element has a different coefficient of expansion or retraction when subjected to temperature changes when compared to the material of the wet deck edging profile.
10. The grating of claim 1, wherein all surfaces of said grating bars have a friction increasing profile thereon.
Type: Application
Filed: Dec 11, 2006
Publication Date: Jun 12, 2008
Inventor: Robert B. Lawson (Naples, FL)
Application Number: 11/636,198
International Classification: E04H 4/00 (20060101);