Brushing – scrubbing – and general cleaning – Machines – Brushing
Patent
1993-02-25
1995-01-17
Spisich, Mark
Brushing, scrubbing, and general cleaning
Machines
Brushing
15 98, 151442, 15410, 403 57, 403 74, 451353, A47L 1140
Patent
active
053815777
DESCRIPTION:
BRIEF SUMMARY
TECHNICAL FIELD
The present invention relates generally to means for mutually connecting two machine elements, and more specifically to coupling means for use with a floor-treating unit and a rod-like device intended for guiding or steering the unit.
According to the invention, the coupling means includes a first coupling part belonging to the rod-like device and a second part belonging to said unit, and that said second part is pivotally mounted on said unit such as to enable the unit to be steered over the floor.
BACKGROUND ART
The use of a rod-like device which has a handle mounted on its upper free end and by means of which a floor-treating unit is manoeuvred when wishing to move and steer said unit over a floor surface is previously known to the art, in various forms. As an example of the state of the prior art, reference is made to the teachings of U.S. Pat. No. 3,310,828 and U.S. Pat. No. 1,401,400, of which the construction disclosed in the first mentioned patent specification is thought to lie closest to the present invention. This prior publication teaches a rod-like flexible device provided with an upper handgrip which is pivotally mounted in relation to the floor-treating unit on a horizontal, bottom axle such as to enable the unit to be rotated horizontally and steered by rotating and tilting the rod-like device when moving said unit over the floor for the purpose of treating said floor.
The object of the present invention is to provide means which will enable a floor-treating unit of the kind shown in principle in FIG. 6 of the International Patent Application No. PCT/SE90/00133 to be manoeuvred in a simple fashion, although it will be understood that the invention is not limited to this application since the principle features of the invention can be applied with other units than floor-treating units.
With regard to the inventive linkage system, reference is made to the present state of the art and also to the disclosures made in the International Patent Application No. PCT/US88/01391.
DISCLOSURE OF THE INVENTION
TECHNICAL PROBLEMS
When considering the state of the prior art as described and illustrated in the aforesaid published applications, it will be seen that a technical problem, from the aspect of construction and of manoeuverability, resides in the provision of simple coupling means which afford the advantage that a first coupling part and a second coupling part which enables the unit to be manoeuvred easily over a floor surface are pivotally connected to one another via a horizontally or generally horizontally extending pivot axis which can be locked in a position which will prevent rotation in this position by vertical displacement of said parts in relation to one another, thereby to cause the rod-like device to adopt a locked position, preferably in an upward direction, which therewith facilitates rolling transport and movement of the unit over the floor surface or the like.
It will also be seen that a technical problem resides in the provision of a simple construction which is adapted to a floor-treating unit and which enables the first part of said coupling means to be moved vertically in relation to the second part of said coupling means, by applying an upwardly directed force or a downwardly directed force to the rod-like device.
It will also be seen that a technical problem resides in the provision of a coupling means which will also enable the unit and rod-like device to be adjusted to a third position or setting by relative displacement of the first coupling part in relation to the second coupling part, solely by activating the rod-like device. In this third position, the rod or the rod-like device can be rotated via a horizontal hinge means to a position in which said rod or rod-like device lies over the unit, a so-called storage position.
It will also be seen that a technical problem is one of realizing that this third position shall be the uppermost position.
It will also be seen that a technical problem resides in the provision of a construction in which the fi
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