Apparatus for cleaning a surface submerged in a liquid

Details Apparatus for cleaning a surface submerged in a liquid Apparatus for cleaning a surface submerged in a liquid

1989-10-11

1991-07-23

Roberts, Edward L.

Brushing, scrubbing, and general cleaning

Submerged cleaners with ambient flow guides

15404, E04H 320

Patent

active

050331485

ABSTRACT:
A submersible automatic swimming pool cleaner (10) comprises a body (13) defining a flow passage (14) extending between an inlet (15) thereto and an outlet (16) therefrom. An auxiliary inlet (15) to the passage is also defined in body (13). A flap (19) is mounted in inlet (18) and is pivotal between a first position, wherein the auxiliary inlet (18) is open and wherein part of the flap extends into passage (14) to form a constriction to liquid flow through the passage, and a second position, wherein the auxiliary inlet (18) is closed and the constriction is removed. In use, the flap (19) oscillates between the first and second positions thereby causing water flow through the cleaner intermittently to be varied. In this way kinetic energy is imparted to the cleaner to cause it to move over a surface (12) to be cleaned, while sucking debris from the surface.

REFERENCES:
patent: 4023227 (1977-05-01), Chauvier
patent: 4642833 (1987-02-01), Stoltz et al.
patent: 4761848 (1988-08-01), Hofmann

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