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US 10,456,000 B2Granted
Surface cleaning head with a valve assembly
AssigneeTechtronic Industries Co. Ltd.
InventorDouglas M. Rukavina
Life of this patent
Estimating the term…
Abstract
A surface cleaning head 100 for a surface cleaning apparatus includes a dirty air inlet 108, a dirty air outlet 112, and a dirty airflow path extending between the dirty air inlet 108 and the dirty air outlet 112. The surface cleaning head 100 also includes an automated valve assembly 116 operable to open and place the dirty airflow path in fluid communication with ambient pressure. The automated valve assembly 116 is adjustably opened based upon a suction level within the dirty airflow path.
Claims11
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,
- wherein the automated valve assembly includes a plurality of valves positioned between the dirty airflow path and ambient pressure operable to sequentially open as the suction within the dirty airflow path increases.
4 more elements
Dependencies are inferred from the claim text.