Dispensing – With flow controller or closure – With interior material guide or restrictor
Patent
1990-12-18
1992-04-21
Shaver, Kevin P.
Dispensing
With flow controller or closure
With interior material guide or restrictor
137209, 220502, 222209, 222464, 222548, 401188R, 401190, B65D 4700
Patent
active
051059983
DESCRIPTION:
BRIEF SUMMARY
FIELD OF THE INVENTION
The present invention relates to reservoirs for fluids and more particularly, but not exclusively, to reservoirs for feeding paint to airbrushes used in artwork.
BACKGROUND OF THE INVENTION
An airbrush normally has mounted thereon a reservoir in which is held a quantity of paint to be fed to the airbrush. By the very nature of the paint, there is a tendency for the passage or passages in the reservoir through which the paint passes to become blocked with dried paint. In order that the cup can be used further, it is necessary for it to be cleaned out. As the dimensions of such cups and the passages therein are normally very small, such a cleaning process is time-consuming and not necessarily very efficient.
Furthermore, as the orientation of the airbrush, and hence of a reservoir which is attached thereto, varies from user to user or even whilst being used by one user, an outlet for paint in the reservoir may not always be at the lowest point. In the case where for example the paint is fed to the airbrush by suction, this could have the effect that air enters the suction line.
SUMMARY OF THE INVENTION
In accordance with the present invention there is provided a reservoir comprising: extending from the first bottom panel, an outlet and a first channel which extends radially from the centre of the first bottom panel along the inside surface of the first bottom panel and axially or substantially axially along the inside of the first wall or walls and communicates with the outlet at a point remote from the first bottom panel; and extending from the second bottom panel and an opening formed in the second bottom panel and which communicates with a second channel which extends radially to the centre of the second bottom panel along the outside surface of the second bottom panel, the second cup member being positionable within the first cup member; communication with one another regardless of relative alignment of the first and second cup members so that a fluid held within the second cup member can flow through the opening and through the first and second channels to the outlet.
BRIEF DESCRIPTION OF THE DRAWINGS
The present invention will not be described by way of example with reference to the accompanying drawings, in which:
FIG. 1 is a perspective view of an assembled reservoir;
FIG. 2 is an exploded view of the reservoir of FIG. 1, also showing a suitable cap;
FIG. 3 is a fragmentary view showing the interior of the outer cup of the reservoir;
FIG. 4 is a further fragmentary view showing the interior of the outer cup of the reservoir;
FIG. 5 is a view of the outer surface of the inner cup of the reservoir;
FIG. 6 is a section along the line VI--VI of FIG. 1 showing the inner and outer cups in a first relative orientation; and
FIG. 7 is a section along the line VI--VI of FIG. 1 showing the inner and outer cups in a second relative orientation.
DETAILED DESCRIPTION OF THE INVENTION
The following description is directed to a reservoir for feeding paint to an airbrush. It is, however, emphasised that it can equally be used in any other application where it is desired to feed a suitable fluid.
As shown in FIGS. 1 and 2, reservoir 2 comprises an outer cup 4 having a bottom panel 6 (See FIGS. 3 and 4) and a substantially cylindrical wall 8 extending from the bottom panel 6. Within the outer cup 4 is positioned an inner cup 10. The inner cup 10 has a bottom panel 12 and substantially cylindrical wall 14 extending from the bottom panel 12. The outer cup 4 is provided with an outlet tube 16.
Referring to FIGS. 3 and 4, there is shown a channel 18 which extends radially from the centre of the bottom panel 6 along the inner surface of the bottom panel 6 to the wall 8 and then substantially axially along the inner surface of the wall 8. The outlet tube 16 communicates with the channel 18 at a point remote from the bottom panel 6.
Referring to FIG. 5, there is shown an opening 20 in bottom panel 12. A channel 22, which communicates with the opening 20, extends radially from the opening 20
REFERENCES:
patent: 1493133 (1924-05-01), Sykora
patent: 2550404 (1951-04-01), Chasan et al.
patent: 4331255 (1982-05-01), Fournier
patent: 4420098 (1983-12-01), Bennett
Kaufman Joseph A.
Shaver Kevin P.
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