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US 4,381,192 AGranted
Filter bag for vacuum cleaner
OwnerJean P. Grimardinventor
Life of this patent
Estimating the term…
Abstract
A vacuum cleaner is provided with an improved filter bag which is attached to a fixed part of the vacuum cleaner by a removable base member. The base member is adapted to allow the ingress and egress of a pipe which transports a gaseous fluid to be filtered, to the interior of the bag. Seal means are also provided for holding the pipe in sealing engagement with the base member and bag.
Claims10
In a vacuum cleaner, the combination comprising:
- (a) a filter bag made of filtering material, said bag defined by superposed inner and outer layers that are separated from each other to provide a space between said layers;
- (b) means for providing access to said space between said layers;
- (c) an inlet pipe connected with said vacuum cleaner and said filter bag;
- (d) said inner and outer layers provided with concentric openings which receive said inlet pipe for conveying fluid to be filtered to the interior of the filter bag;
- (e) a rigid base member removably attached to the vacuum cleaner and having at least a first part thereof received in said accessible space and extending through said means for providing access to said space;
- (f) said base member including another part which constitutes a support element for engaging the vacuum cleaner and supporting said bag within the vacuum cleaner;
- (g) each part of said base member including an opening located substantially in alignment with said concentric bag openings;
- (h) flexible seal means connected to the periphery of at least one of said openings and extending circumferentially inwardly from said periphery;
- whereby, said seal means extends in sealing engagement with said inlet pipe when said inlet pipe is received into said aligned openings.
6 more elements
Dependencies are inferred from the claim text.