Pressurizable beverage vessels

Details Pressurizable beverage vessels Pressurizable beverage vessels

1998-04-30

2000-03-21

Douglas, Steven O.

Fluent material handling, with receiver or receiver coacting mea

Siphon bottle charging arrangements

With gas capsule supporting or manipulating means

141 22, 141 63, 141 64, 141 70, 222399, 220240, 215228, B67C 300

Patent

active

060390905

DESCRIPTION:

BRIEF SUMMARY
BACKGROUND OF THE INVENTION

The present invention relates to pressurizable beverage vessels.
Bars which dispense beer and other beverages are often faced with peak periods of activity during which drinks must be poured and sold. The speed at which drinks can be dispensed is slowed down by the fact that it takes time to pour beverages into drinking vessels such as beer glasses. While pouring could be effected during a quiet spell, before the expected peak period, any drinks so poured would be likely to become flat and so unpalatable. Also, it is rarely possible to gauge the exact demand in advance and so too many drinks may be poured and be wasted.


SUMMARY OF THE INVENTION

It is an object of the present invention to provide an improved wide mouthed vessel which is capable of storing beverages under pressure and also of being used as a drinking vessel.
According to the present invention there is provided a pressurisable container for containing a liquid under pressure comprising a wide mouthed drinking vessel and a closure to close the mouth of the vessel, the closure urging a seal to sealingly engage the vessel, the closure being so configured that when the vessel is pressurised, the closure is deformed to transmit additional pressure to the seal to effect tighter sealing engagement with the vessel, the closure having pressure release means for venting the vessel to release the pressure on the seal and so allow the closure to be more readily removed from the mouth of the vessel.
Preferably means are provided separate from said seal for locking said closure to said vessel. The locking means may take the form of a screw-thread engaging corresponding screw-thread on the vessel.
The seal advantageously is in the form of a flexible annular flange arranged to lie close to the inner face of the vessel, the flange being pivotably supported at one axial end and engaged between opposite axial ends by a domed shaped cap member, the domed shaped cap member, when subjected to pressure from within the container expanding circumferentially to pivot the annular flange about said one axial end into tighter engagement, with the adjacent wall of the container.
Preferably, the inner face of the mouth of the container and the outer face of the flange, when in its relaxed state are convergent in a direction towards the base of the container.
According to the present invention there is still further provided a jetting device for use in a pressurized container, said device comprising a body defining a chamber having an opening, a closure device slidably engaging said opening and constrained in said opening for movement between first and second positions, whereby when in said first position, it closes said opening and in said second position it vents said opening, said closure device being initially assembled into said body in said first portion and being moved from said first to said second position immediately prior to installation in said container.
Preferably, the body comprises a first cylindrical member and the closure comprises a second cylindrical member telescopically engaged with said first member and an annular seal rigid with one said member is provided between the outer surface of the second member and the inner surface of the first member, there being axially extending grooves in said other member over a limited axial extent of the said other member so that when the seal is displaced to engage said axial extent, the grooves provide a by-pass path between the first and second members.
Preferably stop means are provided to limit the range of axial displacement of the first member relative to the second member.
According to the present invention there is yet further provided a jetting device for use in a pressurized container, the device comprising an elongate body defining a chamber open at one axial end and a closure device for sealingly closing said open axial end to hold a predetermined gas environment within said chamber and the closure being movable to vent said chamber just prior to installation in said contai

REFERENCES:
patent: 1905986 (1933-04-01), Jacobs et al.
patent: 4487326 (1984-12-01), Uhlig
patent: 4747511 (1988-05-01), Dutt et al.
patent: 5251770 (1993-10-01), Bartley et al.
patent: 5458252 (1995-10-01), Logel

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