Dispensing – With cutter and/or punch – To form dispensing opening in container
Patent
1998-03-31
2000-03-28
Kaufman, Joseph A.
Dispensing
With cutter and/or punch
To form dispensing opening in container
22215311, 22240213, 222504, B67D 500
Patent
active
060419679
DESCRIPTION:
BRIEF SUMMARY
The present invention relates to a rapid connecting assembly for an aerosol can and a dispensing device, comprising a first part which is connected to the aerosol can and a second part which is connected to the dispensing device, said second part being provided with a tubular holder for receiving a tubular part projecting from the aerosol can.
Such an assembly is known from U.S. Pat. No. 5,149,053, which discloses a rapid connecting device which is operated by means of a control button. This means that it is necessary for the user to be aware that this button has to be operated in order to obtain a rotary movement of the parts relative to each other.
In the case of such rapid connecting devices the problem is that the user does not know which way he has to move the various parts, either for putting into operation or for taking out of use, and any risk of incorrect positioning of the various parts relative to each other must be avoided.
Aerosol cans for which the rapid connecting assembly according to the invention is intended are used in, inter alia, toilets and the like. In the case of such applications it must be possible for such aerosol cans to be replaced by widely differing unskilled personnel, without it being necessary to check the operation. In other words, it must be ensured that the positioning of the various parts is always automatically correct. This applies in particular to constructions in which a spraying action cannot be produced easily by the replacement person.
It is the object of the present invention to provide a rapid connecting assembly by means of which it is particularly simple for a user to make or break a connection.
This object is achieved in the case of a rapid connecting assembly of the type described above in that at least one lug is fitted on the first part or the second part, the second part or the first part is provided with a peripheral edge with a flattened part, and the height of the flattened part at least corresponds to the height of the lug.
The proposed construction means that if the lug and the flattened part are placed correctly above one another, it is extremely simple to achieve a connection. Sliding the first and second part into each other will produce a snap connection. The connection can be broken by twisting the lug and the flattened part relative to each other, so that the lug grips the part of the peripheral edge which is smooth, i.e. the part which is not provided with a flattened part. A snap connection consequently no longer exists. The user can achieve such disengagement by twisting the parts either clockwise or anticlockwise relative to each other.
The connection between the two parts can be stabilized further by fitting more than one lug and corresponding flattened parts.
It has been stated above that for a locking engagement the flattened part and the lug must ultimately lie opposite each other.
This can be promoted by fitting interacting centering means on the first and second part, so that when these two parts are placed in any arbitrary way relative to each other and are pressed together, such center automatically occurs that the lug and the flattened part ultimately lie opposite each other and snap into each other.
According to a preferred embodiment of the invention, such centering means comprise a projection fitted on one of the two parts and a spiral edge fitted on the other of the two parts, said edge coming into engagement with the projection. Moving the two parts downwards vertically will cause said edge to engage with the projection at some point and then, through the helical design of the edge, a rotary movement will be carried out in such a way that the lug and flattened part ultimately lie against each other and engage in each other.
Although the projection can be a separately formed part, it preferably comprises the lug described above.
The dispensing device can be any dispensing device known in the prior art. It preferably comprises a dispensing valve which is controlled electromagnetically. Such valves are used in, for example, toi
REFERENCES:
patent: 3974941 (1976-08-01), Mettler
patent: 4443028 (1984-04-01), Hayes
patent: 5102010 (1992-04-01), Osgar et al.
patent: 5242087 (1993-09-01), Keldenich et al.
patent: 5383580 (1995-01-01), Winder
Bentfield Europe B.V.
Kaufman Joseph A.
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