FR3056280A1 - TUBULAR SHEATH FIT FOR FLEXIBLE PLASTIC MATERIAL - Google Patents

Abstract

This tip for tubular sheath of plastic material comprises a generally cylindrical rigid body (2) comprising an axial passage extending on either side of the end piece and shaped so as to fit into a sheath, an annular piece ( 6) shaped to be positioned around the sheath and the body, and an O-ring (5) sealing. The body (2) comprises a peripheral groove (7) adapted to receive the seal (5), with interposition of the sheath, so that the seal extends laterally projecting relative to the body, bearing against the annular piece

Description

056 280

58901 ® FRENCH REPUBLIC

NATIONAL INSTITUTE OF INDUSTRIAL PROPERTY © Publication number:

(to be used only for reproduction orders) (© National registration number

COURBEVOIE © IntCI ⁸ : F16 L 47/08 (2017.01)

PATENT INVENTION APPLICATION

A1

©) Date of filing: 22.09.16. ©) Applicant (s): CRYL - FR. ©) Priority: @ Inventor (s): GRICOURT YVES. ©) Date of public availability of the request: 23.03.18 Bulletin 18/12. ©) List of documents cited in the preliminary search report: See the end of this booklet (© References to other related national documents: ©) Holder (s): CRYL. ©) Extension request (s): ©) Agent (s): CASALONGA.

NOZZLE FOR TUBULAR SHEATH OF FLEXIBLE PLASTIC MATERIAL.

FR 3 056 280 - A1 yy This end piece for a tubular plastic sheath comprises a rigid generally cylindrical body (2) comprising an axial passage extending on either side of the end piece and shaped so as to fit into a sheath, an annular piece (6) shaped to be positioned around the sheath and the body, and an O-ring (5) sealing.

The body (2) has a peripheral groove (7) capable of receiving the seal (5), with the interposition of the sheath, so that the seal extends projecting laterally relative to the body, bearing against the annular part.

End for flexible plastic tubular sheath

The present invention relates, in general, to liquid recovery systems and more particularly relates to a nozzle intended to come to be sealed in a tubular sheath in which a liquid is intended to flow.

For example, and without limitation, the tip is intended to be mounted in a sheath of a liquid recovery bag. Such a pocket can for example be used for the storage of a liquid recovered during the emptying of a casing.

It has in fact been proposed to produce a liquid recovery pocket in the form of a first sheath with a closed contour comprising two mutually opposite ends closed by welding to form a bag for storing the liquid and a second sheath of diameter less than the first sheath and constituting a conduit comprising a first end closed by welding and a second opposite open end, the first sheath and the second sheath comprising respective openings whose edges are welded to each other. The end piece is here intended to be mounted in a sealed manner on the open end of the sheath of reduced diameter.

However, it is not within the scope of the invention when it comes to mounting such a nozzle on other types of sheaths or, in general, on any type of conduit made of flexible plastic.

By flexible plastic material is meant a deformable plastic material such that it is impossible to mount the end piece directly on the sheath due to its insufficient rigidity. It can for example be a sheath or a plastic conduit having a thickness of about 100 microns or a few hundred microns.

The subject of the invention is therefore an end piece for a tubular plastic sheath, which is intended to be mounted in leaktight manner in the sheath, by an open end of the sheath, comprising a rigid generally cylindrical body comprising an axial passage s' extending on either side of the endpiece and shaped so as to be inserted in the sheath, an annular piece shaped to be positioned around the sheath and of the body and an O-ring seal.

The body has a peripheral groove capable of receiving the seal, with interposition of the sheath, so that the seal extends projecting laterally relative to the body, pressing against the annular part.

Thus, the end piece is made integral with the sheath, which is firmly held by being wedged between the body of the end piece and the seal, the seal itself being secured in the groove by the annular piece.

According to another characteristic of the endpiece according to the invention, the groove is delimited by first, second and third annular faces, respectively proximal, median and distal, which constitute support surfaces for the sheath.

The first annular proximal face extends perpendicular to the general axis of the body, the second annular median face extends perpendicular to the first face and the third annular distal face constitutes a ramp diverging outward from the first face. .

Advantageously, the annular part comprises a grip handle.

In one embodiment, the body has a bearing shoulder against the annular part.

The annular part and the body can be mounted one in the other by complementarity of form.

The annular part and the body may have one annular groove and the other an annular rib for snap-fastening of the body in the annular part.

According to yet another characteristic of the end piece according to the invention, the body advantageously comprises a threaded axial cylindrical extension intended to extend projecting from the open end of the sheath.

Advantageously, the body has a proximal end, by which it is inserted into the sheath, in the form of a truncated cone.

Advantageously, the body has a vent.

Provision may be made for the end piece to further include a plug, a first seal for closing the passage and a second seal for closing the vent.

Other objects, characteristics and advantages of the invention will appear on reading the following description, given solely by way of non-imitative example and made with reference to the appended drawings in which:

- Figure 1 is a perspective view of a nozzle according to the invention, mounted on the open end of a sheath;

- Figure 2 is an exploded view of the tip of Figure 1;

- Figures 3 and 4 are sectional views of two embodiments of a nozzle according to the invention;

- Figure 5 shows an example of using a pocket with a tip according to the invention; and

FIGS. 6 and 7 illustrate another embodiment of a nozzle according to the invention.

Reference will first be made to FIGS. 1 and 2 which illustrate an exemplary embodiment of a nozzle according to the invention, designated by the general reference numeral 1.

This nozzle 1 is intended to come to be mounted in a sealed manner on the open end of a sheath G. As will be described later (FIG. 5), it may be, in a particularly interesting application but in no way limiting the invention, to mount a nozzle on a pocket P made from two sheaths, namely a first sheath of relatively large diameter, to form a bag S for storing a liquid and a sheath G of relatively small diameter to form a conduit which opens into the bag S and on which the end piece 1 is mounted.

As can be seen in FIGS. 1 and 2, the end piece 1 essentially comprises: a body 2 of rigid plastic material, which has a proximal end 3, frustoconical, which comes to be inserted in the sheath G, by its open end, and a distal end 4 which is intended to extend outside the sheath; an O-ring seal 5; and an annular part 6 which is mounted around the open end zone of the sheath G.

The seal 5 is mounted in an annular groove 7 formed in the middle part of the outer peripheral surface of the body 2, with interposition of the end zone of the sheath G.

In other words, during assembly, the annular part 6 and the O-ring 5 are positioned around the open end zone of the sheath, while the end piece 2 is inserted, by its proximal end. 3, in the sheath.

As shown in Figures 3 and 4, the body 2 has a generally cylindrical shape and has an axial passage P which opens on either side of the nozzle.

The groove 7, in which the O-ring 5 is housed, is delimited by three annular faces, namely a first proximal face 8, which is turned towards the side of the proximal end 3 of the body, a second median face 9, and a third distal face 10 which is turned towards the side of the distal end 4 of the body 2.

As can be seen, the first proximal face 8 constitutes an annular shoulder and extends perpendicular to the general axis XX ′ of the body 2, while the second median face 9 is generally cylindrical and extends perpendicular to the first side 8.

The third distal face 10 constitutes a frustoconical face which diverges radially outwards from the second face 9.

The first face 8 and the second face 9 constitute surfaces for receiving the O-ring 5.

As indicated above, during assembly, the annular part and the seal 5 are positioned around the open end of the sheath, while the body 2 is inserted into the sheath, by its proximal frustoconical end 3.

More specifically, the annular part and the seal are first inserted around the sheath, then the body 2 is inserted into the open end of the sheath. We move the O-ring 5 towards the open end, until it fits into the groove 7. This movement of movement of the seal is facilitated by the truncated cone shape of the proximal end of the body 2. The annular part 6 is then made to slide until it comes to be fitted around the body 2.

In the embodiment of Figure 3, the body 2 has an annular shoulder 11 bordering the groove 7, between the latter and the distal end 4. This shoulder 11 constitutes a bearing surface against which the annular element 6 comes abut.

After assembly, the sheath G is firmly held between the body 2 and the seal 5, being applied against the first, second and third faces of the groove 7. The seal is also wedged between the annular element and the body 2.

In the embodiment of Figure 4, the body 2 and the annular element 6 have one an annular groove and the other an annular rib for the locking of the body in the annular part.

In the embodiment shown, the body 2 has an annular rib 12 which is inserted into an annular groove 13 formed in the annular element 6.

As can be seen in FIGS. 1 to 4, the end piece is completed by a handle 14 produced in the form of two diametrically opposite tabs extending laterally from the annular part 6. As visible in FIG. 5, this handle is a gripping means to facilitate the transport of the bag, after filling.

It will also be noted that, in an advantageous embodiment, the distal end 4 of the body is threaded.

As shown in Figures 6 and 7, this threaded end is used for screwing a plug.

As these figures show, in an advantageous embodiment, the distal end 4 is provided with a head 15 having a hexagonal end which is intended for actuating a valve of a casing to be drained, in the occurrence of a rotating valve. The head 15 is for example produced in accordance with the description of patent application FR 1 259 326. It is a hexagonal head provided with an axial liquid passage which opens into the passage P.

In the embodiment of Figures 6 and 7, there may be a vent hole 16 which opens on either side of the body to allow the evacuation of the air contained in the bag P during its filling.

Of course, such a vent can also be provided in the embodiment of FIGS. 2 and 3.

As indicated above, after filling, a plug B is screwed onto the threaded distal end 4 of the body.

As shown, the end piece is then completed by a first seal 17 which closes the axial passage of the head 15 and by a second O-ring seal 18 which comes to bear on the end face of the end piece 2 to seal the vent hole 16.

It will be understood that the plug B is then shaped to include a surface for receiving the first seal 17 and a surface for receiving the second seal 18.

As will be appreciated, the invention which has just been described, makes it possible to produce a kit comprising a pocket, for example made from two sheaths, namely a first sheath with closed contour comprising two mutually opposite ends closed by welding for form a bag for storing a liquid and a second diameter sheath to constitute a conduit which opens into the bag, and further comprising a nozzle which comes, during use, to be mounted on the open end of the relatively small diameter sheath.

In an advantageous embodiment, the endpiece has a head and constitutes an adapter which actuates a rotary valve provided in a casing to be drained. After use, the cap closes the end cap, the assembly being able to be easily handled thanks to the presence of the handles on the end cap.

Claims (10)

1. End piece for a tubular plastic sheath, said end piece being intended to be mounted in a sealed manner in the sheath, by an open end of the sheath, comprising a generally cylindrical rigid body (2) comprising an axial passage (P). 'extending on either side of the endpiece and shaped so as to be inserted in the sheath, an annular part (6) shaped to be positioned around the sheath and the body, and an O-ring (5) d sealing, characterized in that the body (2) has a peripheral groove (7) capable of receiving the seal (5), with interposition of the sheath, so that the seal extends laterally in relation to the body, resting against the annular part. 2. End piece according to claim 1, in which the groove is delimited by first, second and third faces (8, 9, 10) respectively proximal, median and distal, which constitute support surfaces of the sheath, the first face proximal (8) extending perpendicular to the general axis of the body, the second annular middle face (9) extending perpendicular to the first face, the third distal face (10) constituting a ramp diverging outward from from the first side. 3. End piece according to one of claims 1 and 2, wherein the annular part comprises a handle (14) for gripping. 4. A tip according to any one of claims 1 to 3, wherein the body has a shoulder (11) for pressing against the annular part. 5. End piece according to any one of claims 1 to 4, in which the annular part and the body are mounted one in the other by complementarity of shape. 6. End piece according to any one of claims 1 to 4, in which the annular part and the body have one an annular groove (13) and the other an annular rib (12) for the latching of the body in the annular piece. 7. End piece according to any one of claims 1 to 6, in which the body comprises a threaded axial cylindrical extension (4) intended to extend projecting from the open end of the sheath. 5 8. End piece according to any one of claims 1 to 7, in which the body has a proximal end (3), by which it is inserted in the sheath, in the form of a truncated cone. 9. End piece according to any one of claims 1 to 8, in which the body comprises a vent. 10. The nozzle of claim 8, further comprising a plug (8), a first seal for closing the passage (P) and a second seal for closing the vent. 1/4 2/4