US 4,779,763 AGranted

Two-chamber container

AssigneeF.P.D. Future Patents Development Company S.A.

InventorHans-Jorg Klawitter

Life of this patent

Estimating the term…

Loading patent…

Abstract

A two-chamber container for two gas-pressurized components kept separately, for example liquids which are miscible. An outer chamber contains a first component and is provided with a dispensing valve whose interposed connecting member leads from the interior of the outer chamber to the outside and is adapted to be closed by a plug. The second component is contained in an inner chamber mounted in the interior of the outer chamber. The inner chamber is an entirely separate, self-contained vessel supported in the interior of the outer chamber. The interior end of the interposed connecting member terminates in a cup-shaped receptor member which is disposed above and around the distal end portion of the inner chamber such that a radial and axial clearance of 1-2 mm between the receptor member and the distal end is provided. The inner chamber has a desired rupture site which can be broken by force from outside, for example by pivoting or pushing-in the dispensing valve. In this manner ready communication is established between the interiors of the two containers so that spontaneously complete mixing of the two components is achieved.

Claims19

Dependent claims

An apparatus for mixing and spraying a mixture of two fluids, the apparatus comprising;

an outer chamber for containing a first fluid and having a dispensing valve for spraying;
an inner chamber, mounted within said outer chamber, for containing a second fluid, said inner chamber having a body portion and, at one end of said body portion, a rupture site and a neck portion extending from said one end of said body portion to a distal end;
a hollow interposed connecting member for said dispensing valve, said hollow interposed connecting member having an opening at a first end for providing fluid communication with the outside and a least one lateral opening at a second end for providing fluid communication with said outer chamber, said second end of said interposed connecting member extending downwardly from said dispensing valve into said outer chamber and towards said neck portion and forming a cup-shaped cavity, said hollow interposed connecting member being supported for movement between a first position when at least one of a radial and an axial clearance of 1-2 mm exists between said second end of said hollow interposed connecting member and said distal end and a second position when said second end of said hollow interposed connecting member contacts said distal end and exerts a fracture moment around and breaks said rupture site allowing the first and second fluids to mix;
an elastic sealing collar for said dispensing valve;
said sealing collar supporting said hollow interposed connecting member for movement between said first position and said second position
and sealing said at least one lateral opening at said second end of said hollow interposed connecting member when said hollow interposed connecting member is in said first position;
and
a support member fitted around and supporting said inner chamber within said outer chamber so that no lateral displacement of said inner chamber occurs when said hollow interposed connecting member is moved to said second position.

5 more elements

An apparatus for mixing and spraying a mixture of two fluids, the apparatus comprising;

an outer chamber for containing a first fluid and having a dispensing valve for spraying;
an inner chamber, mounted within said outer chamber, for containing a second fluid, said inner chamber having a body portion with an open mouth at one end of said body portion;
a closure plunger adapted to be inserted into the open mouth of said inner chamber to form a rupture site, said closure plunger also including an attached neck portion;
a hollow interposed connecting member for said dispensing valve, said hollow interposed connecting member having an opening at a first end for providing fluid communication with the outside and at least one lateral opening at a second end for providing fluid communication with the outer chamber, said second end of said hollow interposed connecting member forming a cup-shaped cavity which extends downwardly from said dispensing valve into said outer chamber and towards said neck portion, said hollow interposed connecting member being supported for movement between a first position when at least one of a radial and an axial clearance of 1-2 mm exists between said second end of said hollow interposed connecting member and said distal end and a second position when said second end of said hollow interposed connecting member contacts said distal end and exerts a fracture moment around and breaks said rupture site allowing the first and second fluids to mix;
an elastic sealing collar for said dispensing valve supporting said hollow interposed connecting member for movement between said first position and said second position
and sealing said at least one lateral opening at said second end of said hollow interposed connecting member when said hollow interposed connecting member is in said first position;
and
a support member fitted around and supporting said inner chamber within said outer chamber so that no lateral displacement of said inner chamber occurs when said hollow interposed connecting member is moved to said second position.

5 more elements

Dependencies are inferred from the claim text.

Facts

Application: 07/088,509Filed 20 Aug 1987 · continuation
Priority: 17 Oct 1983
Granted: 25 Oct 1988
Term ends: Not estimatedThe source records don’t support an estimate.

Classification5 codes

B65D 83/687
Initially separated and subsequently mixed: with contents and the propellant being fully mixed on, or prior to, first use, e.g. by breaking an…
B65D 83/46
Valves specially adapted for the discharge of contents; Regulating devices: tilt valves
B65D 83/666
Initially separated and subsequently mixed, e.g. in a dispensing head: with contents and the propellant being fully mixed on, or prior to, first…
B65D 83/40
Containers for dispensing liquid or semi-liquid contents by internal gaseous pressure, i.e. aerosol containers comprising propellant: closure caps