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US 5,820,643 AGranted
Dust filter bag for a vacuum cleaner
OwnerPaul Lienenluke, Stefan Kraut-Reinkoberinventors
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OwnerPaul Lienenluke, Stefan Kraut-Reinkoberinventors
Estimating the term…
A dust filter bag (1) for a vacuum cleaner (3), with a retaining plate (H). The bag is constructed of a solid paper material, such as cardboard for example, to which a dust bag (12) is joined, for example adhesively, with a closure flap (13) turned towards the inside (15) of the dust bag (12), hinged on the retaining plate (H), which closure flap (13) is openable against a spring action and, in closed condition, keeps closed an opening (O) in the retaining plate (H). To make the dust filter bag simpler in construction and more advantageous as regards use, a band-like spring element (F) is attached to the closure flap (13) in such a way that, in the closed condition (FIG. 4), there is formed a clearance (Y) between a band end (E--E) and a hinge axis (14), lying outside of the band, of the closure flap (13), where the hinge axis (14) is provided turned towards the inside (15) of the dust bag (1).
A dust bag for a vacuum cleaner, with a retaining plate comprising a stiff paper material to which a dust bag is joined with a closure flap turned towards the inside of the dust bag, hinged on the retaining plate, which closure flap is openable against a spring action and, in its closed condition, keeps closed an opening in the retaining plate, characterised in that a spring element formed as a layer element is arranged on the closure flap in such a way that, in a closed position, of the closure flap there is formed a clearance between a band plane and a hinge axis of the closure flap, lying outside of the band, where the hinge axis is arranged turned towards the inside of the dust bag.
Dependencies are inferred from the claim text.