Brushing – scrubbing – and general cleaning – Machines – With air blast or suction
Patent
1998-08-13
2000-05-23
Moore, Chris K.
Brushing, scrubbing, and general cleaning
Machines
With air blast or suction
154151, A47L 902
Patent
active
060651830
DESCRIPTION:
BRIEF SUMMARY
FIELD OF THE INVENTION
The present invention relates to a connecting element for a mouthpiece for use in connection with a suction cleaner, said mouthpiece being of the type which is designed for arrangement at the end of e.g. the suction pipe of a vacuum cleaner, and wherein the mouthpiece is provided with a suction sole for sweeping a supporting surface, such as a floor. More specifically the invention relates to a connecting element of the type featured in the introductory part of claim 1.
BACKGROUND OF INVENTION
Such mouthpieces which may e.g. be intended for vacuum cleaning are usually provided with a flexible joint that connects the suction sole to the suction pipe of the vacuum cleaner, said connecting joint being so designed that the vacuum cleaner mouthpiece may freely occupy different angles relative to the vacuum cleaner mouthpiece. In this manner the suction sole of the vacuum cleaner mouthpiece may easily sweep a surface irrespective of the orientation of the suction pipe of the suction cleaner.
Owing to the construction of the flexible joint, the known vacuum cleaner mouthpieces of this type allow the mouthpiece to be turned in the surface plane during use by rotation of the vacuum cleaner's suction pipe about its longitudinal axis. On the one hand, it is desired in this connection that it is possible to turn the mouthpiece slightly in order to access inaccessible places, and on the other hand that the mouthpiece may be turned with a small effort on the part of the user, whereby an impact on the vacuum cleaner mouthpiece, e.g. when bumping into furniture and the like during use, will entail a relatively small moment of force on the suction pipe.
Therefore the known joints are so arranged that a given angle change in the position of the vacuum cleaner suction pipe entails a relatively smaller angle change of the mouthpiece in the surface plane. Very often such that the angle change of the mouthpiece is about half the angle change of the suction pipe of the vacuum cleaner. Hereby it becomes possible, as mentioned above, to orient the mouthpiece in the surface plane with only little effort due to the exchange in the flexible joint. However, in case a more drastic angle change is imposed on the known mouthpiece, an undesired leak will occur between the suction sole and the supporting surface which is vacuum-cleaned.
An example of such known mouthpiece is described in W084/03429.
It is a drawback of the known mouthpieces that the forward and backward movements to be performed by the vacuum cleaner operator often entail a hunched and thus inconvenient work posture which strains the back of the operator.
SUMMARY OF INVENTION
It is therefore the object of the present invention to provide a connecting element for a mouthpiece for suction-cleaning floors and the like surfaces, said connecting element enabling cleaning by suction of a large area, as opposed to the known ones, at a given time consumption while occupying an ergonomically more correct work posture.
This is obtained by the invention according to claim 1 since it is hereby made possible to suction-clean or especially to vacuum-clean by moving the mouthpiece from side to side relative to the user's position as opposed to the known movement of the mouthpiece in a direction away from and towards the user. Compared to the known mouthpieces, the sideways movement of the mouthpiece will, ceteris paribus, provide a higher average rate of sweeping whereby, at a given time consumption, an area is swept which is considerably larger than by means of the known mouthpieces without causing the user to occupy a more hunched and thus more back-straining work posture. This high degree of movability which is provided with the present invention also makes it possible to occupy not substantially different work postures compared to the previously known ones.
In order to obtain a particularly high degree of vacuum cleaning efficiency, it is preferred that the suction pipe may occupy an angle of at least 30 degrees and preferably of more than 45 degrees as
REFERENCES:
patent: 1086367 (1914-02-01), Hope
patent: 1161908 (1915-11-01), Tice
patent: 1318881 (1919-10-01), Kelley
patent: 1355553 (1920-10-01), Goughnour
patent: 1838481 (1931-12-01), Gudka
patent: 2974347 (1961-03-01), Seyfried
patent: 5410776 (1995-05-01), Schneider
Hammeken Nils Preben
Matthiassen Benny
Moore Chris K.
Nilfisk A/S
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