Aquarium cleaning device

Claim 1

A PORTABLE AQUARIUM CLEANING DEVICE COMPRISING AN ELONGATED HOUSING, A CENTRIFUGAL PUMP DISPOSED IN A CASING AT ONE END OF SAID HOUSING AND MEANS FOR CONTINUOUSLY DRIVING SAID PUMP INCLUDING MOTOR MEANS AT THE OTHER END THEREOF, MEANS FOR ENERGIZING SAID MOTOR INTERCONNECTED THEREWITH, SAID CENTRIFUGAL PUMP BEING DRIVABLY CONNECTED WITH SAID MOTOR, SAID CENTRIFUGAL PUMP CASING BEING PROVIDED WITH AN AXIALLY DISPOSED INLET OPENING AND A RADIALLY EXTENDING OUTLET, ELONGATED TUBE MEANS DEPENDING FROM SAID CASING, ONE END OF SAID TUBE BEING IN COMMUNICATION WITH SAID INLET OPENING, THE OTHER END OF SAID TUBE BEING OPEN, A FILTER SECURED TO SAID OUTLET, THE OPERATION OF SAID PUMP BY SAID MOTOR CAUSING WATER TO BE CONTINUOUSLY DRAWN FROM AN AQUARIUM TANK THROUGH SAID TUBE AND PUMP CASING AND RECIRCULATED INTO THE TANK IN FILTERED FROM AFTER PASSAGE THROUGH SAID OUTLET AND FILTER, WHEREBY UPON OPERATION OF SAID PUMP, WATER MAY BE CONTINUOUSLY DRAWN FROM AN AQUARIUM TANK THROUGH SAID TUBE AND PUMP AND RECIRCULATED INTO SAID TANK IN FILTERED FROM AFTER PASSAGE THROUGH SAID OUTLET AND FILTER RECEPTACLE, THE CIRCULATION OF WATER THROUGH SAID TUBE WHEN THE OPEN END THEREOF IS DISPOSED ADJACENT TO AQUARIUM GRAVEL CAUSING SAID GRAVEL TO BE CONTINUOUSLY ELEVATED AND AGITATED IN THE LOWER END OF SAID TUBE, THEREBY SUBJECTING SAID GRAVEL TO A CONTINUOUS CLEANING ACTION AND CAUSING AN INITIAL SEPARATION OF SAID GRAVEL FROM THE LIGHTER PARTICLES OF WASTE MATERIAL INTERSPERSED THEREWITH.