FR2503103A1 - DEVICE FOR DISPENSING PASTY OR SEMI-PASTY PRODUCTS - Google Patents

Abstract

IT CONSISTS OF A CYLINDRICAL BODY 1 AND AN INTERNAL PISTON 3. ON ONE SIDE OF THIS PISTON 3 ARE PLACED THE PRODUCT AND THE DISTRIBUTOR VALVE V AND ON THE OTHER SIDE, A CHARGE OF PROPELLANT GAS. WHEN THE DISTRIBUTION OF THE PRODUCT IS ENDED, THE RESIDUAL PRESSURE OF THE PROPELLER GAS, WHICH COULD BE DANGEROUS, IS EVACUATED BY THE DISTRIBUTOR VALVE V AND THE PISTON 3, FOLLOWING THE DIAMETRAL DISPLACEMENT OF THE PISTON 3 TO AUTHORIZE A COMMUNICATION BETWEEN THE TWO SPACES PREVIOUSLY SEPARATED BY THIS PISTON. THE INVENTION MAY BE USED FOR ANY PASTE PRODUCTS SUCH AS CREAMS, TOOTHPASTE, OR AGAIN FOOD PASTRY PRODUCTS SUCH AS MUSTARD, MAYONNAISE.

Description

The present invention relates to a device for

  distribution of pasty products or thick liquids, such as beauty creams or toothpastes, or even mustard, mayonnaise

Or other.

  Paste product dispensers are known comprising a metal container in which a movable piston is housed. This

  container shall be provided at one end with a dispensing valve

  on the opposite side, of a valve or plug through which the introduction or the loading of the propellant such as

  than liquefied gas. This gas acts in pressure on the product, at -

  through the piston, to obtain its distribution through a valve. In another embodiment, the piston is replaced by

  a deformable bag-shaped element.

  The metal containers make it possible

  tance, to obtain safety control of the propellant

aPreS alvoir Jebité er pro uit.

  cause them to burst. As a result, these metal containers can not be replaced by plastic containers,

made of their least resistance.

  According to the invention, the dispensing device makes it possible to discharge the internal pressure when the product to be dispensed

  is exhausted, to avoid the risk of bursting.

  the dispensing device comprises a body internally

  cylindrical to receive a movable piston, and a distribu-

  trice. According to the invention, the piston is capable of displacement

  transverse elastic and is provided with means of engagement in the

  which of the countermeasures associated with the dispensing valve can engage. The dispensing valve, of the tilting type, causes during its inclination, the transverse displacement of the piston, and consequently the formation of a passage relative to the body, to allow the passage of the propellant for its evacuation

  in the atmosphere through said valve.

  It is known to make reclining type valves or

  bending, with a shaft provided with an axial blind hole which

  at one end with radial openings. Said rod carries a head at one end and a rib forming a flange, placed

away from said head.

  The stem is housed, by its part extending between the nerve

  vure and the head, in the hole of an elastically deformable element

  which presses tightly against the rib and the head.

  Under the effect of a flexion or inclination exerted on the stem, the radial openings are placed in communication with the chamber containing the product. When the stem is released, the elasticity of

  the organ returns it to the rest position and shutter.

  According to the invention, the head carried by the rod constitutes the counter-means forming part of the valve, whereas the engagement means consist of a recess carried by the piston and

  in which penetrates the aforementioned head.

  To fix the object of the invention, without, however, limiting

ter, in the attached drawings:

  FIG. 1 is a view in axial section of the device

  the invention, in the rest position, while the body is practically

  filled with product; Figure 2 shows on a larger scale, the end of the device o the dispensing valve is mounted; the latter is represented in an inclined position, during the distribution of the product

  Figure 3 shows the end of the device before the

of the propellant.

  This device for the distribution of pasty products is established with a cylindrical body (1) of plastic preferably, without excluding any other material or metal; this body (1) is closed by a bottom, while its open opposite end has a flange (2) to cooperate with a cover (4) which is put in place by clipping and which carries for this purpose, a

  flange (5) for engaging below said flange (2).

  The lid (4) is equipped axially with a valve

  tilting or bending builder (y). This valve is constituted by

  a rod (6) of metal or plastic, substantially cylindrical

  drique and provided with an axial blind hole, carrying at one end a series of radial openings (7). The rod (6) further comprises a circular head (11) and an annular projection (12) with a conical shape. The valve (V) also comprises a deformable elastic element (8) of rubber or elastomer, with a central sleeve (8A) in which the rod (6) is housed and whose ends (8B) and (8C) elastically support against the protrusion (12) and the head (11), so as to obtain the seal in the non-use position. The element (8) also comprises a flange (8D) which extends over the entire inner face of the lid (4), so as to form a seal between the cylindrical body (1) and said lid (4). The element (8) is held by the cover - 3 - (4) by means of a central annular flange (4A) which engages in

  an annular groove (8E) presented by the sheath (8A).

  The rod (6) is capped with a hollow member (9) made of flexible material such as plastic, with a rounded end of reduced thickness, a slot (10). When not in use, the slot (10) is closed, as shown in FIGS. 1 and 3, as a result of bringing the two edges closer to each other while the product is being cut. , the edges of said slot are spread apart under the thrust action exerted by

  said product, as illustrated in FIG.

  A plunger (3) made of flexible material is slidably mounted inside the cylindrical body (1) and has an arcuate profile skirt (3A) constituting at its ends wings (3B) and (30) projecting towards the 'outside. The piston (3) further comprises a wall

  extreme and diametrical (3D) with a recess or blind hole cylin-

  (3E), of a diameter approximately equal to the diameter of the

  head (11) which is intended to be received in said recess. The in-

  of this head (11) in the latter is facilitated by the

  flared tie (3F) preceding the recess (3E).

  In the open body (1), as illustrated in FIG.

  produces a metered amount of a liquid propellant, then Qn immediately closes the body (1) with the cover (4) provided with the valve and which temporarily connects the piston (3) due to a slight fitting force between the head (11) of the rod (6) and

  the recess (3E) of said piston. The product is introduced under

  in the device through the rod (6), after having

  pulled the sheath (9). It must be considered that the loading under

  sion causes the sheath (8A) to elastically crush, so as to release the radial openings (7) for their communication with the interior of the body (1). The higher loading pressure

  that the pressure of the propellant, allows the penetration of the

  duit in the body (1), while moving the piston (3) to the bottom of said body (1). The compressed propellant is thus contained in the chamber formed between the bottom and the piston (3) whose central portion (3D) is located at a distance from the contour of the skirt

sealing (3A).

  When using the device, angular support

  exerted on the sheath (9) forces the rod (6) to tilt (according to

  2), while the head (11) moves away from an angle (A) of the inner edge (80) of the elastic sealing element (8),

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  to thereby put the lights (7) in communication with the product contained in the container. The propellant acts in thrust on the piston (3) and the product escapes through the slot (10) which has expanded. During the exhaustion of the contained product, the cavity (3E)

  cap the head (11), so that when the sheath (9) is inclined

  born by driving the rod (6), the piston (3) is also displaced diametrically due to the elastic deformability of its skirt (3A), to allow the existing propellant at the rear of the piston, to traverse the to vent to the atmosphere, through the valve (V) and the sheath (9). At the end of use, the

  container is internally at atmospheric pressure.

  It is obvious that the cylindrical body (1) can be

  in any material such as metal, since in this case

  also, the absence of pressure undoubtedly represents a

  safety guard. The lid (4) can also be metallic or

  other material, and it can be assembled by screwing with the body (1).

  The invention is in no way limited to that of these modes of application, nor to those of the embodiments of these various parts which have more especially been indicated; she

  on the contrary, embraces all variants.

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Claims (5)

CLAIMS I   -1- Device for dispensing pasty or semi-pasty products, comprising an internally cylindrical body, a piston movable in this body and a dispensing valve, characterized   in that the piston (3) is capable of an elastic movement   diametrical tick, while being provided with engagement means (3E)   in which countermeasures (11) belonging to the distribution valve   butrice (V), can engage; said valve (V) being able to tilt angularly to control the diametral displacement of the piston (3) in order to cause a passage between the body (1) and said piston (3) to allow the passage of the propellant and consequently ,   its evacuation into the atmosphere through the valve (V).   -2- Device according to claim 1, characterized by   the fact that the piston (3) comprises a sealing skirt (3A) for   view of elastic end wings (3B, 3C).   -3- Device according to claim 2, characterized by   the fact that the piston (3) has a diametral (3D) partition   peripherally bonded to the skirt portion (3A).   -4- Device according to claim 1, characterized in that the engagement means presented by the piston (3) are constituted by a recess (3E) in which can penetrate a head (11) integral with the rod (6) of the valve (V), said head   (11) constituting said countermeasures of engagement.   -5- Device according to claim 1, characterized in that the rod (6) is hollow, with transverse lumens (7), while being supported by a resilient sealing member (8). -6- Device according to claim 5, characterized in that the elastic element (8) is held by a cover (4) which can be assembled with the body (1), said elastic element   forming a seal between the body (1) and the cover (4).   Apparatus according to claim 6, characterized by   the fact that the body (1) directly forms a bottom.