DEVICE TO MAINTAIN SEPARATE WITHIN A CARTRIDGE UNTIL THE MOMENT OF USE AND THEN TO MIX, TWO DIFFERENT SUBSTANCES PARTICULARLY TWO-COMPONENT RESINS

Abstract: The device comprising means (5) for tearing or breaking a container (26), consists of a rod (5), threaded or provided with flexible teeth (5′), and preferably pointed at its front end and provided with a handle (11) at its back end. The rod can be axially introducted into the cartridge tube or the like (1) by perforating cap (33) which closes said container. The rod (5) is guided by a guide piston (39) and can slide in said cartridge, tube or the like (1), breaking said container (26), if necessary, and screwing (fig. 1) on threading (28) or inserting its teeth (5′) in complementary recesses of an agitation disk or equivalent (27) that serves to mix the two components. Said container (26) is preferably being of glass or fragile synthetic resins, so that its walls can be easily broken either by manually or mechanically compressing the walls of cartridge (1) or by said running rod (5).

Description: This invention has as its object a device to maintain separate until the moment of use, within a cartridge, tube or the like, two different substances that are liquid, paste or solid, in powder or granular form and particularly two-component resins, to mix them at the moment of use and distribute them. FR-A-2129178 discloses, for the same purpose, a device having the shape of a syringe in which is introduced a cylindrical container for one of the two components to be mixed at the moment of use, the body of the syringe containing the other component. The plunger breaks initially only the front base of the container, mixes the two components, then breaks the back base of said container and expels the mixture from the output opening of the syringe. The need to break the front and the back bases of the container in two different steps requires complicated means to control the stroke of the plunger. These complications are avoided with the device according to the present invention, which is characterized by claim 1. The accompanying drawings represent: in figure 1 the axial section of a preferred embodiment of the device in question, in a non-limiting, non-binding way; in figures 2 to 8 some variants of said embodiment. With reference to figures 1, 2, 3, the device comprises a cartridge, tube or the like 1 preferably of rigid or flexible resins, or aluminium, inside of which is placed a container 26 of glass or fragile synthetic resin, so that its walls can be easily broken either by manually or mechanically compression of the walls of the cartridge 1, or by a slidable rod 5 through a hole or diaphragm 35 of a piston 39, and causing container 26 to be penetrated by said rod, breaking it. Container 26 contains, for example, one of the components of a two-component resin, while the container 26 is surrounded by the other component. When container 26 is broken at the moment of use, the two resin components are mixed and distributed via opening 2. Rod 5, provided with a handle 11, is preferably pointed and threaded at its front end 5′, so that at the end of travel it can be screwed into a threading 28 of a disk 27. At the end of rod 5 fine flexible circular teeth can substitute the threading which are deformed when rod 5 is thrust into or removed from threading 28 of disk 27 or complementary recesses. The teeth are supposed only to resist the agitation force (the resistance is less than that of machine grease) and should be deformed by a jerk of the hand. This disk can act as a piston to mix the two components, especially when they are not fluid, i.e. are gelatinous or pasty. When they are fluid, the agitation can occur simply by shaking the cartridge 1 and disk 27 can also be absent. The disk is provided with reinforcing fins 27′ and 27″ (figures 1 and 3) and holding lips 27‴ as shown in figure 2, or simply provided with numerous holes, or is screened. The underlying piston 39 to which perforable the cap 33 is screwed, in this case acts as a guide for rod 5. Rod 5 can be provided at its end 5′ with deformable blades or capillaries either to facilitate introduction and extraction of piston 39 through the hole or to obtain a forced agitation. In the variant shown in figure 4, container 26 is provided with an externally threaded neck 26′ which is screwed into the complementary threading of the coaxial hole of piston 39. In this case, piston 39 acts as a support for container 26, and cap 33, perforable by rod 5, closes the opening of container 26. Figure 5 shows a further variant, similar to the preceding one, but with cap 33 in a different shape, which can be seen better in figure 6. In this case, piston 39 is provided, for perfect sealing, with a flexible widening 39′ and a V gasket 30, 30′ replacing a normal O ring. In figures 7 and 8 is provided a perforable diaphragm 35 which closes the opening of the neck of container 26 when cap 33 is put in place.

Claims: 1. Device to maintain separate until the moment of use, within a cartridge (1), tube or the like, two different substances that are liquid, paste or solid, in powder or granular form, and particularly two-component resins, to mix them at the moment of use and distribute them, comprising a container (26) for separating the two substances, the container being easy to perforate or tear or break at the moment of use by a perforating or tearing or breaking means (5), after which provision is made for mixing of the two substances by agitation or by a mixing means (27) placed beforehand in the cartridge (1), tube or the like and for subsequent distribution of the mixture from said cartridge, tube or the like, characterized in that said means for tearing or breaking said container (26) consist of a rod (5), which is threaded or provided with flexible teeth (5′), and preferably pointed at its front end and provided with a handle (11) at its back end, which rod can be axially introducted into the cartridge tube or the like (1) by perforating a diaphragm (35) or cap (33) which closes said container, the rod (5) which is guided by a guide piston (39) being slidable in said cartridge, tube or the like (1) for breaking said container (26), when necessary, and screwing into threads (28) or inserting its teeth (5′) in complementary recesses of said agitation means (27) that serves to mix the two components, said container (26) being of glass or fragile synthetic resins, so that its walls can be easily broken either by manually or mechanically compressing the walls of said cartridge (1) or by said rod (5). 2. Device according to claim 1, characterized in that said container (26) is spherical or cylindrical. 3. Device according to claims 1 and 2, characterized in that the walls of said container (26) are so thin and breakable that tearing or breaking of said tearable or breakable container and mixing of the two substances can be performed by strong movements or shakings of the cartridge, tube or the like. 4. Device according to claims 1, 2 or 3 characterized in that a bottom of the cartridge (1), tube or the like can slide in said cartridge tube or container to be able to be driven by the ejection piston (39) or by compressed air expelling the mixture through output hole (2) replaced, by a flexible tube that carries the mixture to the point of use. 5. Device according to claims 1, 2, 3 or 4, characterized in that the container (26) exhibits an externally threaded neck (26′) that is screwed into a complementary threading of an axial hole (37) of said guide piston (39), the piston being provided at its front end with a gasket (39′) widening toward the outside to provide the sealing and at least a V gasket (30, 30′) placed in a peripheral groove (36) of the piston. 6. Device according to claim 5 characterized in that the open end of the externally threaded neck (26′) of the container is closed either by a diaphragm (35) which can be perforated by said rod (5) or by a removable cap (33) or by both.

Inventors: KAEUFELER, MAX, Käufeler, Max
Applicants: INTECSER S.A.
Application year: 1986
Main classification: B65D81
IPC codes: B01F15, B01F3, B01F13, B01F11, B65D81