Self cleaning filter and vacuum incorporating same

Details Self cleaning filter and vacuum incorporating same Self cleaning filter and vacuum incorporating same

2008-04-01

2008-04-01

Smith, Duane (Department: 1797)

Gas separation

With nonliquid cleaning means for separating media

Solid agent cleaning member movingly contacts apparatus

C055S296000, C055S298000, C055SDIG030, C095S282000, C015S352000

Reexamination Certificate

active

10744190

ABSTRACT:
A brush configured to move repeatedly over a vacuum filter. The brush will remove dust particles to prevent them from clogging the filter. In the preferred embodiment, the brush is mounted on a revolving shaft. As the shaft turns it moves the bristles of the brush over the surface of the filter, whereby dust particles may be dislodged. In one embodiment, the shaft is attached to the vacuum motor and is turned directly by the motor. In this embodiment a speed reducer may be employed to slow the rate of rotation of the brush. In another embodiment, a turbine is attached to the shaft. The turbine is placed in the path of the air stream moving through the vacuum. The air passing through the turbine cause it and the shaft to rotate, thereby reducing the load on the motor.

REFERENCES:
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patent: 6928692 (2005-08-01), Oh et al.
patent: 7070636 (2006-07-01), McCormick et al.
patent: 2002/0088208 (2002-07-01), Lukac et al.

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