FR2747648A1 - Liquid container - Google Patents

Abstract

The liquid container, which can be emptied without sudden discharge, comprises a casing (1) for holding the liquid which has a pouring opening (2) in its upper surface (3). A hollow handle (4) communicates through one of its ends (8) with the casing interior. The casing is extended at the pouring opening by a cylindrical tube section (5), an annular transverse circular section chamber (6) with a longitudinal trapezoidal section and a cylindrical neck (7). The tube section provides a liquid passage cross section less than that of the cylindrical neck which is also less than the annular chamber cross section. The handle is connected radially to the annular chamber such that, during emptying, the liquid flows through the lower parts of the chamber and the neck. The chamber and neck upper parts remain free of liquid to allow passage of air.

Description

TECHNICAL AREA
The present invention relates to a container for packaging a liquid, capable of being emptied smoothly.

It finds its application for the packaging of liquid products for domestic, industrial or agricultural use, such as in particular cleaning products, lubricants and weed killers.

STATE OF THE ART
It is well known that to smoothly empty a container having a single orifice it is necessary to allow continuous entry through this orifice a sufficient amount of air inside the container to compensate for the volume of the liquid flowing.

A known solution, described in the patent
WO 95/13220 consists in mounting in extension of the orifice a device which facilitates the entry of air. This device comprises two separate channels, one of them ensuring the passage of the liquid and the other that of the air during an emptying operation. In addition, the air passage channel is provided with a ball and a seat to prevent untimely passage of liquid.

 This device has the drawback of being complex and expensive, and of increasing the height of the container.

Another solution described in the patent
FR 2 499 943 is a container comprising a tubular handle formed in its face into which the emptying orifice opens, the pinched part delimiting the handle is extended to the level of the opening of the container, so as to form a through conduit at this level and extending the handle.

DESCRIPTION OF THE INVENTION
The present invention provides a container comprising a hollow handle and a single emptying orifice, which allows the simultaneous flow of the liquid and the entry of air, without the addition of a specific additional device.

 To this end, the container of the invention comprises a liquid retention envelope provided on its upper face with a pouring orifice and a hollow handle in communication at one of its ends with the interior of said envelope , the retention envelope being extended at the pouring orifice by a device which comprises a section of cylindrical tube of circular section, an annular chamber of circular cross section and of approximately trapezoidal longitudinal section and a cylindrical neck of circular section , the tube section providing a section for the passage of the liquid that is less than the section of the cylindrical neck itself less than the cross section of the annular chamber, the hollow handle being connected substantially radially to the annular chamber so that during an emptying operation, the liquid flowing through the lower parts of the annular chamber and the neck, the pa upper parts remaining free of liquid to allow air to pass through.

 According to another characteristic of the invention, the longitudinal axes of the neck and of the annular chamber are approximately coincident and offset with respect to the longitudinal axis of the section of tube, so that the generatrices of the section of tube and the neck, opposite the point of connection of the handle to the annular chamber, are substantially combined.

BRIEF DESCRIPTION OF THE DRAWINGS
Other characteristics and advantages of the invention will appear on reading the detailed description below with reference to the accompanying drawings in which, - Figure 1 schematically shows a section
across the top of the empty container.

- Figure 2 shows a partial top view of the
empty container in horizontal position.

- Figure 3 shows a cross-sectional view of the
upper part of the container, partially filled,
emptying position.

DETAILED DESCRIPTION OF THE INVENTION
The container of the invention according to FIG. 1, comprises: - an envelope 1 for retaining liquid, - a pouring orifice 2 on its upper face 3, - a hollow handle 4, - a section 5 of tube, - a chamber 6 annular, - a neck 7
According to Figures 1 and 2 the section 5 of tube, the annular chamber 6 and the neck 7 are formed by the extension of the casing 1. The end 8 of the handle 4 is connected to the casing 1 on its face 3 upper and its end 9 to the upper part of the annular chamber 6, the container being in a horizontal position.

 The longitudinal axes 10 and 11, respective to the chamber 6 and to the neck 7 are substantially combined. The longitudinal axis 12 of the section 5 of the tube is offset with respect to the axes 10 and 11. This offset is such that the internal cylindrical walls of the neck 7 and of the section 5 have their generatrices 13 and 14 approximately coincident. If the inside diameter of the section 5 is equal to D, the respective diameters of the neck 7 and of the annular chamber 6 will be substantially equal to 1.25 times D and 1.8 times D.

 According to Figure 3, the liquid 15 contained in the casing 1 flows out of the container forming a vein 16 whose cross section is substantially equal to the interior section of the tube section 5. This vein of fluid filled the lower part of the neck 7, so that the upper part 17 of the neck 7 and the upper part 18 of the annular chamber 6 remain free for the passage of air. The hollow handle 4 ensures the passage of air between the upper part 18 of the annular chamber 6 and the upper part 19 of the casing 1 located above the liquid 15.

 Thanks to these provisions the flow of liquid during a draining operation is limited by the cross section of the section of tube 5, the air freely entering the envelope 1 to compensate for the volume of liquid as and when its flow.

Claims (2)

1- Container for packaging a liquid capable of being  smoothly emptied with an envelope (1) of  liquid retention (15) provided on its face (3)  top of a pouring opening (2) and a handle  (4) hollow in communication at one of its ends  (8) with the interior of said envelope (1),  characterized in that the retention envelope (1) is  extended at the pouring orifice (2) by a  device comprising a section (5) of cylindrical tube  of circular section, an annular chamber (6) of  circular cross section and cross section  approximately trapezoidal longitudinal and a  cylindrical neck (7) of circular section, the section  (5) of tube offering a section for passage of the liquid,  lower than the section of the cylindrical neck (7), it  even less than the cross section of the chamber  (6) annular, the hollow handle (4) being connected  substantially radially to the annular chamber (6) of  so that during a draining operation, the liquid  (15) flows through the lower parts of the chamber  (6) annular and neck (7), the parts (17,18)  remaining free of liquid to leave  pass air. 2- container according to claim 1 characterized in that  the longitudinal axes (10,11) of the neck (7) and of the  annular chamber (6) are approximately combined  and offset from the longitudinal axis (12) of the  section (5) of tube, so that the  generators (13,14) of the section (5) of tube and the neck  (7), opposite the connection point of the handle (4)  to the annular chamber (6), are substantially  confused.