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(11) | EP 0 294 058 A3 |
(12) | EUROPEAN PATENT APPLICATION |
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(54) | Cleaning brushes |
(57) A cleaning brush 1 includes a body 2 which houses fluid operated drive means 21 for
rotating a brush head or heads 8 rotatably mounted on the body. The connection between
the drive means 21 and the brush heads 8 is preferably a positive drive connection
and is preferably a gear motor. Where there are two brush heads 8 they are preferably
rotatable on parallel axes of rotation 13 and rotate in opposite directions in use.
The body 2 may include a storage chamber 55 for storing cleaning agent and the passage
of fluid through the cleaning brush may then cause cleaning agent to be drawn from
said storage chamber 55. Preferably there is an air gap 50 between an exhaust 36 from
the drive means 21 and an outlet 50 from the storage compartment so that air and not
contaminated fluid will be drawn back to the drive means 21 in the event of reverse
syphonage. |