Fluid handling – Systems – Flow path with serial valves and/or closures
Patent
1995-09-14
1997-12-23
Lee, Kevin
Fluid handling
Systems
Flow path with serial valves and/or closures
F16L 3728
Patent
active
056998317
DESCRIPTION:
BRIEF SUMMARY
BACKGROUND OF THE INVENTION
The present invention relates to a connecting device in a paint toning machine for connecting a paste container to a toning paste supply hose of the toning machine.
The connecting device according to the invention is particularly well suited for use in a paint toning machine as described in U.S. Pat. No. 5,174,474. This paint toning machine comprises a bag-like paste container connected through hoses and a valve element to another toning paste container in the machine. Due to this arrangement the bag-like paste container can be a replaceable refill container. In the paint toning machine according to U.S. Pat. No. 5,174,474, the connecting device between the replaceable paste container and the paste container that is a fixed part of the machine is relatively complicated and difficult to use.
SUMMARY OF THE INVENTION
The object of the present invention is to provide a connecting device by which a toning paste container can be easily and quickly connected to a toning paste supply hose, but it can also be quickly disconnected when required without the danger of toning paste leaking from the container to the environment or air being allowed to enter the container or the supply hose.
The above object can be achieved by means of a connecting device according to the invention, which is characterized in that it comprises a first connector to be connected to a discharge aperture of the paste container and containing a valve element, a second connector to be connected to the toning paste supply hose and containing a spindle, and a connection mount for receiving the first and the second connector, for supporting them against each other and for forcing the spindle of the second connector to open the valve element of the first connector.
When the paste container is of a type in which the discharge aperture comprises a sealing film to be cut when the container is opened and a collar surrounding it, said collar provides a first connector for the connecting device. In this case the connecting device according to the invention is characterized in that it further comprises a second connector to be connected to the toning paste supply hose and including an opening spindle for cutting said sealing film, and a connection mount for receiving the first and the second connector, for supporting them against each other and for forcing the spindle of the second connector to cut the sealing film of the first connector.
Preferably the second connector comprises a bellows-type compressible body for making the opening spindle push forward. The valve element in the first connector is opened or the sealing film cut in such a way that the body of the second connector is compressed by means of the connection mount, thereby making the opening spindle therein push forward and forcing the valve element in the first connector to move to a position which opens the flow connection or to cut the sealing film.
Preferably the body of the second connector is spring-loaded to maintain the body in the maximum length allowed by the opening spindle. Thereby it is further preferred that the opening spindle comprises a sealing surface, which presses against the countersurface in the body of the second connector while said body is in the non-compressed position, and thereby closes the flow connection through the second connector.
DESCRIPTION OF THE DRAWINGS
In the following an embodiment of the connecting device according to the present invention will be described in more detail with reference to the accompanying drawing, in which
FIG. 1 shows a first connector of the connecting device according to the invention in partial cross-section,
FIG. 2 shows a second connector of the connecting device according to the invention also in partial cross-section,
FIG. 3 shows a connection mount of the connecting device according to the invention, having the second connector according to FIG. 2 fitted thereon,
FIG. 4 is a front elevational view showing the connection mount with the first and second connectors therein and the first connec
REFERENCES:
patent: 3871404 (1975-03-01), Courant
patent: 4890642 (1990-01-01), Smazik et al.
Cimcorp Oy
Lee Kevin
LandOfFree
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