Liquid purification or separation – Structural installation – Closed circulating system
Patent
1996-05-31
1997-07-22
McCarthy, Neil
Liquid purification or separation
Structural installation
Closed circulating system
210232, 4510, E04H 412, E04C 242
Patent
active
056500661
DESCRIPTION:
BRIEF SUMMARY
FIELD OF THE INVENTION
The invention relates on the one hand to a grating module for peripheral gutter for discharging overflow water from a swimming pool, the said gutter adjoining the border of the swimming pool and on the other hand to the grating obtained from these modules.
BACKGROUND OF THE INVENTION
It is known to use, around the periphery of swimming pools, channels covered with gratings made of metal, concrete, polymer concrete or plastics and which convey the accidental overflow water so as to reincorporate it into the swimming pool water treatment cycle.
These channels and their grating are as a general rule of rectangular shape, this moreover corresponding perfectly with the requirements of most swimming pools whose edges are generally straight.
By contrast, when it becomes a question of following the curved edges of swimming pools, the construction of a peripheral gutter then requires the deployment of special gratings whose radius of curvature corresponds perfectly with that of the gutter.
It would be possible to envisage making swimming pool gratings employing the configuration of the gratings described in EP-A-0,526,304 and bending them, but this solution presents a number of problems both as regards the reliability of the gutter and the comfort of the user.
Indeed, when bending the grating about its longitudinal axis, there is a narrowing of the spaces between the ridges situated on the inside of the bent axis, but as a corollary there is an equivalent widening of the spaces between the ridges situated on the outside of the bent axis. These enlarged spaces constitute, through their conical configuration, a meager bearing surface for the foot of the user, and therefore uncomfortable, and allow various objects and litter to penetrate easily into the gutter.
According to another characteristic of the gratings of the prior art, the water penetration orifices are generally located perpendicularly to the longitudinal axis of the gutter and with no asperity other than those necessary to make the upper surface of the grating non-slip. During large overflows, the water from the swimming pool therefore tends to pass over the grating and to spread out beyond the gutter, in time causing a sizable loss of water from the swimming pool which has to be made up periodically.
BRIEF DESCRIPTION OF THE INVENTION
The invention aims to reedy these various drawbacks by proposing a grating module for a peripheral gutter for discharging overflow water from a swimming pool. This grating module is characterized in that it comprises a bendable, central longitudinal rib acting as a link for at least one transverse rib arranged as a ridge on either side of this central rib, the said transverse rib being furnished on its upper part with perpendicular slats projecting outwards and constituting the plantar span of the grating.
The design of this bendable grating made from a semi-rigid thermoplastic material enables it to adapt both to straight lines and curvatures imposed by the peripheral gutter of a swimming pool or by any similar type of gutter irrespective of the usage thereof.
Indeed, by virtue of the combination of a set of successively long and short slats located on the upper part of the transverse ribs and of the back-to-back deployment of the transverse ribs of two adjacent modules, it follows that, when bending the grating, there is a possible interweaving of the said slats through a comb effect. Thus, in the inner part of the bend (with respect to the central rib), the long slats of a module lie systematically opposite the short slats of the adjacent module and can therefore overlap each other.
On the other hand, in the outer part of the bend (with respect to the central rib), the particular shape of the long slats makes it possible to effect the interweaving of the said long slats and to retain a regular plantar span. The grating therefore remains comfortable for the user and precludes any accidental intrusion of bulky objects into the gutter.
According to another subject of the invention, the slats lo
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Blandin Jean-Claude
Pichon Daniel
Green Theodore M.
McCarthy Neil
Societe ETEX
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