Dispensing – With discharge assistant – Fluid pressure
Patent
1995-08-04
1997-08-19
Huson, Gregory L.
Dispensing
With discharge assistant
Fluid pressure
22215314, B65D 8300
Patent
active
056579110
DESCRIPTION:
BRIEF SUMMARY
The invention relates to a tap head for keg fittings according to the preamble to patent claim 1.
A tap head of this type is known from DE-PS 39 02 527.
Provision of a pressure relief valve which opens when there is a predetermined excess gas pressure in the keg and tap head to prevent explosion-like bursting of the barrel-like keg and the tap head in the event of excessive gas pressure is often desired and sometimes also prescribed by the authorities for such tap heads. Known pressure relief valves (DE-OS 29 39 536) for this purpose are designed as separate components which have to be manufactured separately and inserted subsequently in a sealed state into a wall of the tap head housing.
The object of the invention is to so design a generic tap head that release of an inadmissibly high excess gas pressure in the keg and tap head is possible without using a separate pressure relief valve.
The object is accomplished with a generic tap head by the features in the characterizing clause of patent claim 1.
It is known from DE-OS 37 01 432 to allow pressure gas to escape through a gap between a plate on the barrel and an annular seal on the tap head with the shut-off valves of a tap head in the closed state. However, the known configuration cannot be used as a pressure relief valve. In a tap head of a different type, DE-GM 91 10 371 shows a sliding guide means for barrel fittings which is placed as a separate component on the tap head housing.
Preferred embodiments of the invention are the subject matter of subclaims 2 and 3.
The following description serves to explain the invention in greater detail in conjunction with the attached drawings, in which
FIG. 1 is a part-sectional side view of a tap head for keg fittings with a sliding guide means in the normal operating state;
FIG. 2 shows the tap head of FIG. 1 in a position in which it is lifted off the keg fittings owing to excess gas pressure;
FIG. 3 is a plan view of the tap head of FIG. 2;
FIG. 4 is a part-sectional front view of the tap head with the pipe connection screwed off in the direction of arrow A in FIG. 1 and
FIG. 5 is a front view of the tap head similar to FIG. 4 in the direction of arrow B in FIG. 2.
The tap head for keg fittings illustrated in the drawings comprises a housing 1 with a pipe connection 2 for introducing pressure gas, e.g., compressed air or CO.sub.2, and a sliding guide means 3 arranged on the underside of the housing 1 for enabling the housing 1 to be pushed in the known manner onto the keg fittings of the barrel-like container, for example, a beer or lemonade container, and attached to them so that the tap head and the keg fittings are connected in a secure and sealed manner with one another.
An essentially hollow cylindrical slide 4 is displaceable in the housing 1 parallel to the longitudinal axis of the housing 1. A pipe connection 5 for the liquid to be tapped, for example, beer or lemonade, is arranged at the top of the slide 4. The slide 4 contains in its interior a loose, spherical valve body 6 which interacts with a valve seat (not illustrated) on the slide 4 and forms a check valve for the tapped liquid.
There is pivotally mounted on the housing 1 by means of a horizontal through bolt 9 an actuating lever 11 which has a relatively spacious recess 12 in the region of the housing 1 (cf. FIG. 3) with which it encircles the upper portion of the housing 1 such that it is pivotable back and forth between an upper position and a lower position. From the actuating lever 11 which is fork-shaped in the region of the recess 12, two pins 13, 14 project inwardly in the region of this recess 12 and engage in recesses 15 on both sides of the slide 4. As is apparent from FIGS. 1 and 2, the recesses 15 have openings which widen for insertion of the pins 13, 14.
When the actuating lever 11 is pivoted between its two extreme positions, the slide 4 is moved--via the pins 13, 14--with it. The upper position is the closed position of the tap head, the lower position the open position of the tap head. In the closed position, the tap head ca
REFERENCES:
patent: 5511692 (1996-04-01), Willingham
Mogler Joachim
Wiedmann Helmut
Huson Gregory L.
Mogler Joachim
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