Swimming pool cleaner component

Details Swimming pool cleaner component Swimming pool cleaner component

2001-08-24

2003-10-14

Spisich, Mark (Department: 1744)

Brushing, scrubbing, and general cleaning

Attachments

C015S001700

Reexamination Certificate

active

06631533

ABSTRACT:

FIELD OF THE INVENTION
This invention relates to a swimming pool cleaner component and more particularly to the surface engaging disc of certain vacuum operated automatic pool cleaners.
BACKGROUND TO THE INVENTION
Several different models of automatic pool cleaners have been developed which operate on the suction generated by the pool filtration plant. The inlet to the plant is connected through the swimming pool cleaner and a flexible pipe. The cleaner includes a mechanism which intermittently interrupts the flow through the pipe and results in the cleaner being moved stepwise over the surface being cleaned.
This type of cleaner generally requires an annular disc of flexible material around the inlet to the body of the cleaner to assist in holding the cleaner on the surface being cleaned.
The discs generally available are moulded from suitable wear resistant plastics material and are well known. Various minor modifications have been made to these basic annular discs, including variations in the compositions from which they are made, in efforts to improve their effectiveness in operation. Some of these modifications including scalloping of the edge of the disc and a peripheral series of inwardly directed ribs of different configurations to prevent the disc holding up against obstacles in the pool. Also series of holes have been made through the disc to allow water and entrained debris to pass through the disc to the inlet to the cleaner. Ribs and/or channels extending radially from either the central opening through the disc or from the edge of the disc have been provided in an effort to control the flexibility of the discs.
However the flexibility obtained has been mainly across the disc more or less along radial lines.
OBJECT OF THE INVENTION
It is an object of this invention to provide a disc of the kind referred to in which flexibility is imparted in a manner which facilitates the pool cleaner negotiating obstacles protruding from the surface being cleaned.
SUMMARY OF THE INVENTION
In accordance with this invention there is provided a disc for a pool cleaner of the kind referred to in which at least one groove is provided in the undersurface of the disc substantially concentric with the disc periphery.
Further features of the invention provide for there to be a series of radially spaced grooves, for the series to be interconnected by radial grooves symmetrically spaced around the disc and for the radial grooves to extend beyond the inner concentric groove.
The invention also provides for there to be holes through the disc intersecting the inner ends of at least some of the radial grooves and at least some of the intersections of the radial and concentric grooves.


REFERENCES:
patent: 3605171 (1971-09-01), Candor et al.
patent: 4193156 (1980-03-01), Chauvier
patent: 5418995 (1995-05-01), Rice et al.
patent: 5433985 (1995-07-01), Atkins
patent: 6122794 (2000-09-01), Atkins
patent: 6125492 (2000-10-01), Prowse
patent: 6463614 (2002-10-01), Supra

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