Dispensing – Plural sources – compartment – containers and/or spaced jacket – With discharge assistant for each source
Patent
1991-02-06
1992-10-20
Bartuska, F. J.
Dispensing
Plural sources, compartment, containers and/or spaced jacket
With discharge assistant for each source
2223865, B65D 3700
Patent
active
051563096
DESCRIPTION:
BRIEF SUMMARY
The present invention relates to a container with at least one chamber defined in particular by a tubular formation of elastomeric material, which at a delivery opening communicates with at least one delivery valve for a filling substance held under pressure in the chamber due to the inherent elasticity of the formation and to a tubular formation of elastomeric material for defining a chamber, which can be connected at a delivery opening with a delivery valve for a filling substance held under pressure in the chamber due to the inherent elasticity of the formation.
Furthermore, the present invention relates to a method for the manufacture of such a formation and to an arrangement for performing this method and to an arrangement for securing a chamber to a holder.
It has been known for a long time to define a chamber, within containers, such as cans, by means of an elastomeric formation, which latter communicates through a delivery opening with a delivery valve. The inherent elasticity of the elastomeric material of a synthetic or natural elastomer is utilized in order to put the filling material forced into the chamber under pressure so that it can be delivered by pressure from the valve.
Such cans or tubular formations of elastomeric material of the above-mentioned type are known in very different embodiments, as e.g. from:
Although a multiplicity of proposals are known for providing cans with such a sock as a pressure-producing element, these techniques have in the past been seldom employed. This has been true although actually the advantage is obtained that no separate propulsion gas needs to be introduced, either in the filling substance itself or, in two-chamber cans, in a chamber between a can housing and the inner chamber receiving the filling substance. The problems which arise with cans or tubular formations of the initially-mentioned type are as follows:
When filling of the filling substance under pressure in order to expand the tubular formation provided, the expansion of the formation is scarcely controlled, so the elastomeric formation can expand more at certain parts than at others and consequently such parts are overstressed.
Upon emptying of the said formation, there remains an amount of filling substance which previously could be determined only with difficulty, which could not be predetermined, sometimes because of the above-mentioned difficult control of the formation expansion ratios during the filling of the substance under pressure.
In order to overcome these disadvantages and to provide a container or a formation of the initially-mentioned type, with which relationships which can be reproduced well are obtained during filling and emptying, it is now proposed according to the invention that the formation is formed convergent at least in a section which extends over a substantial portion of its axial extent and/or that the wall thickness of the formation varies in the axial direction.
Thereby it is ensured that the formation expands uniformly axially symmetrically in the said section during the filling of the filling substance under pressure, in addition to which it is also ensured that, upon emptying of the formation, an axial contraction to a well-defined residual internal volume of the formation occurs.
With a container with such a formation, which is formed with a cover portion with at least one opening and at least one valve holder part, it is furthermore proposed that the formation has, in the region of the delivery opening, at least one radially projecting collar and that this collar is compressed between the parts as a sealing element.
A simple seal is thereby realized between the said formation and the actual can housing in that, with the formation in one piece, one or if required several, axially stacked circular disc seals are provided.
In the above-mentioned can or the above-mentioned tubular formation it is preferably proposed that the section extends over at least almost the entire axial extent of the formation.
The entire axial length of the formation is thereby utilized
REFERENCES:
patent: 2816690 (1957-12-01), Lari
patent: 3767078 (1973-10-01), Gortz et al.
patent: 3791557 (1974-02-01), Venus
patent: 3876115 (1975-04-01), Venus et al.
patent: 3907169 (1975-09-01), Gortz et al.
patent: 3998363 (1976-12-01), Beres et al.
patent: 4153182 (1979-05-01), Loeliger
patent: 4324350 (1982-04-01), Thompson
patent: 4446991 (1984-05-01), Thompson
patent: 4524943 (1985-06-01), Busch et al.
Bartuska F. J.
Friedrich Richard
LandOfFree
Container with at least one chamber formed by a tubular body, an does not yet have a rating. At this time, there are no reviews or comments for this patent.
If you have personal experience with Container with at least one chamber formed by a tubular body, an, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Container with at least one chamber formed by a tubular body, an will most certainly appreciate the feedback.
Profile ID: LFUS-PAI-O-187695