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US 4,134,605 AGranted
Arrangement for connecting an attachment to a vacuum cleaning device
AssigneeVorwerk & Co. Interholding GmbH
InventorsWieland Guhne, Paul Lienenluke
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AssigneeVorwerk & Co. Interholding GmbH
InventorsWieland Guhne, Paul Lienenluke
Estimating the term…
An arrangement for connecting an attachment to a vacuum cleaning device includes two connecting sleeves, one on the attachment and the other on the device. One of the connecting sleeves has an inner and an outer portion which together bound a groove in which a projecting portion of the other connecting sleeve is received in the assembled condition. The shapes of such portions are identical but the dimensions thereof are proportionately different. Each of the portions includes a part-cylindrical circumferential zone and a polygonal zone gradually merging with the part-circular zone and complementing the same into the respective circumferentially complete portion. The other connecting sleeve may have a transverse wall at the polygonal zone, which abuts against a corresponding transverse region of the one connecting sleeve, and a seal may be sandwiched therebetween in the assembled condition. Another seal may be accommodated in the groove in the assembled condition.
In a vacuum cleaning device of the type having an air conduit including at least two consecutive sections, an arrangement for sealingly and detachably connecting the associated ends of the consecutive sections, comprising two associated connecting sleeves each connected to one of said associated ends, one of said connecting sleeves including an inner portion having an outer circumferential surface and an outer portion having an inner circumferential surface which is spaced from said outer circumferential surface to bound therewith a receiving groove which is circumferentially non-circular, the other connecting sleeve having a projecting portion which is also circumferentially non-circular as to be compatibly and fittingly receivable in said groove of said one connecting sleeve in the assembled condition of the consecutive sections, for preventing relative turning of said sleeves.
In a vacuum cleaning device of the type having an air conduit including at least two consecutive sections, an arrangement for sealingly and detachably connecting the associated ends of the consecutive sections, comprising two associated connecting sleeves each connected to one of said associated ends, one of said connecting sleeves including an inner portion having an outer circumferential surface and an outer portion having an inner circumferential surface which is spaced from said outer circumferential surface to bound a receiving groove therewith, the other connecting sleeve having a projecting portion fittingly receivable in said groove of said one connecting sleeve in the assembled condition of the consecutive sections, at least said projecting portion of said other connecting sleeve having, as considered in cross-section, a substantially part-cylindrical circumferential zone and a substantially polygonal circumferential zone gradually merging with and completing said part-cylindrical cicumferential zone in the circumferential direction of said other connecting sleeve.
Dependencies are inferred from the claim text.