Filter condition indicator

Details Filter condition indicator Filter condition indicator

A - Human Necessities

47

L

A47L 9/19 (2006.01)

Patent

CA 2545976

A filter condition indicator for a vacuum appliance having a filter includes a housing with a diaphragm dividing the housing into first and second chambers. One chamber receives a pressure indication from inside the filter, and the other chamber receives a pressure indication from outside the filter. An indicator device is activated by movement of the diaphragm in response to a pressure differential between the first and second chambers.

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