Patent ID: 7313840

Claim:
A handheld magnetic scrubber for use in cleaning an aquarium wall: a. a power unit having (i) a first housing, (ii) a plurality of magnets distributed about a surface of said first housing, and (iii) a plurality of electromagnets orientated within said first housing, wherein said plurality of electromagnets produces a variable magnetic field in response to supplied power; and b. a pad unit having (i) a second housing, (ii) at least one piece of ferrous or magnetic material distributed about a surface of said second housing, (iii) a bore formed in said second housing, said bore having a center of radius, (iv) a scrubbing material releasably received in said second housing bore, wherein said scrubbing material is rotatable and radially moveable with respect to said second housing bore center of radius, (v) at least one piece of ferrous or other magnetic material operatively coupled to said scrubbing material so that said scrubbing material is rotatable and radially moveable with respect to said second housing bore center of radius in response to said variable magnetic field produced by said plurality of electromagnets, wherein when said power unit is placed on an outside of the aquarium wall and when said pad unit is placed on the inside of the aquarium wall opposite said power unit, said plurality of first housing magnets attract said pad unit at least one piece of ferrous or magnetic material to maintain said pad unit adjacent to said power unit as said scrubbing material is rotated with respect to said second housing.