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US 2011/0078873 A1Published application
Vacuum cleaner
AssigneeUneeda Vac (Australia) Pty Ltd
InventorMichael Herrett
Life of this patent
Estimating the term…
Abstract
In a vacuum cleaner (1) particulate matter (32) accumulates on a counter-weighted flap (4). When the weight of the particulate matter (32) exceeds the effect of the counterweight (15) and the effect of any air-pressure differential across the flap (4), the flap opens and voids particulate matter (32) from within the vacuum cleaner (1).
Claims7
A vacuum cleaner comprising a closure clement which:
- is biased towards a position in which the closure clement acts to retain accumulated particulate matter within the cleaner;
- and
- which is influenced by the weight of accumulated particulate matter to move to a position in which the closure element does not act to retain accumulated particulate matter within the cleaner.
(canceled)
Dependencies are inferred from the claim text.