Above floor air bleed
AssigneeTechtronic Industries Co. Ltd.
InventorDouglas M. Rukavina
Life of this patent
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Abstract
A surface cleaning head for a surface cleaning apparatus includes a dirty air inlet, a dirty air outlet, and a dirty airflow path extending between the dirty air inlet and the dirty air outlet. The surface cleaning head also includes an automated valve assembly operable to open and place the dirty airflow path in fluid communication with ambient pressure. The automated valve assembly is adjustably opened based upon a suction level within the dirty airflow path. The automated valve assembly includes an adjustable valve, a sensor operable to measure the suction within the dirty airflow path, and a controller operable to control the adjustable valve based on the sensor measurement.
Claims7
A surface cleaning head for a surface cleaning apparatus comprising:
- a dirty air inlet;
- a dirty air outlet;
- a dirty airflow path extending between the dirty air inlet and the dirty air outlet;
- and
- an automated valve assembly operable to open and place the dirty airflow path in fluid communication with ambient pressure,
- wherein the automated valve assembly is adjustably opened based upon a suction level within the dirty airflow path, and
- wherein the automated valve assembly includes an adjustable valve, a sensor operable to measure the suction within the dirty airflow path, and a controller operable to control the adjustable valve based on the sensor measurement.
Dependencies are inferred from the claim text.