Classifications

• • B—PERFORMING OPERATIONS; TRANSPORTING
  • B65—CONVEYING; PACKING; STORING; HANDLING THIN OR FILAMENTARY MATERIAL
  • B65D—CONTAINERS FOR STORAGE OR TRANSPORT OF ARTICLES OR MATERIALS, e.g. BAGS, BARRELS, BOTTLES, BOXES, CANS, CARTONS, CRATES, DRUMS, JARS, TANKS, HOPPERS, FORWARDING CONTAINERS; ACCESSORIES, CLOSURES, OR FITTINGS THEREFOR; PACKAGING ELEMENTS; PACKAGES
  • B65D41/00—Caps, e.g. crown caps or crown seals, i.e. members having parts arranged for engagement with the external periphery of a neck or wall defining a pouring opening or discharge aperture; Protective cap-like covers for closure members, e.g. decorative covers of metal foil or paper
  • B65D41/02—Caps or cap-like covers without lines of weakness, tearing strips, tags, or like opening or removal devices
  • B65D41/04—Threaded or like caps or cap-like covers secured by rotation
  • B65D41/0471—Threaded or like caps or cap-like covers secured by rotation with means for positioning the cap on the container, or for limiting the movement of the cap, or for preventing accidental loosening of the cap
• • B—PERFORMING OPERATIONS; TRANSPORTING
  • B05—SPRAYING OR ATOMISING IN GENERAL; APPLYING FLUENT MATERIALS TO SURFACES, IN GENERAL
  • B05B—SPRAYING APPARATUS; ATOMISING APPARATUS; NOZZLES
  • B05B11/00—Single-unit hand-held apparatus in which flow of contents is produced by the muscular force of the operator at the moment of use
  • B05B11/01—Single-unit hand-held apparatus in which flow of contents is produced by the muscular force of the operator at the moment of use characterised by the means producing the flow
  • B05B11/10—Pump arrangements for transferring the contents from the container to a pump chamber by a sucking effect and forcing the contents out through the dispensing nozzle
  • B05B11/1042—Components or details
  • B05B11/1043—Sealing or attachment arrangements between pump and container
  • B05B11/1046—Sealing or attachment arrangements between pump and container the pump chamber being arranged substantially coaxially to the neck of the container
  • B05B11/1047—Sealing or attachment arrangements between pump and container the pump chamber being arranged substantially coaxially to the neck of the container the pump being preassembled as an independent unit before being mounted on the container

Definitions

• the present invention relates to a fluid reservoir comprising a threaded neck defining an opening through which the fluid can be extracted, for example using a pump.
• the neck has an external thread intended to cooperate with a ring provided internally with a thread of the same pitch as the thread of the neck and serving, for example, for fixing a pump to the neck.
• Document US 3 888 376 describes a security system for a screw cap on a threaded neck of a bottle.
• the thread of the neck of the bottle is formed with a recess at its lower edge.
• the thread of the thread is for the most part thick, then suddenly becomes thinner towards its end corresponding to the end of the screwing.
• the step thus formed defines a transverse abutment wall.
• the internal thread of the safety cap is produced symmetrically with an opposite recess at its upper edge which defines an opposite abutment wall.
• the opposite step of the stopper is located near the start of the thread, which once fully engaged on the threaded neck of the bottle, arrives at the step of the thread of the neck.
• the stopper wall of the stopper arrives at the stopper wall of the neck, so that the two walls intersect.
• This stopper further comprises a flexible material forming a spring housed in its bottom and it is thus possible to unscrew the stopper by pressing it beforehand so as to compress the flexible material and thus vertically offset the stop walls. We can then unscrew the cap.
• the cap In this security system, it is possible to unscrew the cap, which is the goal, however, preventing children from doing so. It should be noted that the cap must also be specially adapted to the neck of the bottle.
• a bottle neck thread is provided with protrusions or flexible spines which project radially outward from the thread threads. These protuberances are deformed or twisted by the thread bottoms of the screw cap. These protrusions can also be in the form of a vertical rib which crosses the thread of the neck of the bottle. The edge of the rib protrudes rapidly outward from the thread. Again, this is a security system adapted to allow unscrewing.
• the object of the present invention is to overcome this drawback of the prior art by defining locking means for threaded neck allowing easy screwing substantially identical to that on a conventional neck without locking means while effectively preventing unscrewing.
• the blocking means must act only unidirectionally, that is to say in the direction of unscrewing, and be as inoperative as possible in the direction of screwing.
• the present invention provides that said projection placed under the thread includes a ramp on which the internal thread engages during screwing and a locking edge at the end of the ramp defining beyond a blocking wall against which the internal thread stops in the event of unscrewing
• the projection is completely asymmetrical with a progressive slope operating in the direction of screwing and an edge and a blocking wall operating in the direction of unscrewing
• the ramp is progressive and inclined downwards extending, at the level of the blocking edge, up to the top of the external thread.
• the blocking wall extends radially perpendicular to the external thread.
• the external thread has at least one notch formed just beyond the projection in the direction of screwing.
• said notch comprises a stop wall situated in the same plane as the projection blocking wall so as to merge at their junction.
• the surface of the projection blocking wall is more extensive, and in particular in an area in which the internal thread of the ring engages.
• the thread tends to deform in its upper part corresponding to the lower part of the external thread of the neck. This is why it is advantageous to produce a notch allowing the useful surface of the blocking wall to be extended.
• said notch comprises a slope which extends substantially tangentially from the top of the thread to the base of the stop wall.
• said thread does not meet resistance at the level of the notch.
• FIG. 1 is a schematic perspective view of a tank neck according to the invention
• Figure 2 is a view similar to that of Figure 1 taken at an angle of 90 ° relative to Figure 1
• Figure 3 is a vertical cross-sectional view through a neck according to the invention on which a fixing ring is mounted.
• a neck 11 of a tank 1 (partially shown).
• the reservoir 1 can form a shoulder 10 at the level of which the neck 11 extends upwards.
• the neck 11 defines a generally and substantially cylindrical barrel 12 which ends in an upper end 14 at which a sealing ring 15 can be provided.
• the neck 11 defines an opening 110 through which fluid can be extracted using a dispensing member, for example a pump.
• the cylindrical barrel 12 externally defines a thread 13 in the form of a cord which projects outwards. This is a completely classic design for a threaded tank neck.
• the thread 13 of the neck 11 is provided with locking means in the form of one or more projections 16, preferably two, located diametrically opposite.
• the projections 16 are located below the thread 13 and include a ramp 161 ending in a locking edge 162 defining beyond a locking wall 163 as can be seen in FIG. 2.
• the ramp defines a substantially flat surface which extends gradually and inclined from right to left, that is to say in the direction of screwing, to end with the substantially straight locking edge 162 which extends to the level of the vertex 130 of the thread 13.
• the projection is therefore in the form of an increasingly thick mass having a downwardly inclined outer surface which begins at the junction made between the thread 13 and the barrel and ends in l ridge 162 which extends perpendicularly to the foot 12 of the neck 11 through the blocking wall 163.
• the thread 13 can be formed with a notch 131 located beyond the projectionl ⁇ in the direction of screwing.
• This notch 131 defines a stop wall 133 situated in the same plane as the blocking wall 163, so that they merge at their junction as can be seen in FIG. 2. Consequently, the wall d 'stop 133 extends the blocking wall 163 upwards which increases its useful surface.
• the notch 132 has a slope 131 which extends substantially tangentially to the barrel 12 of the neck 11. Thus, during screwing, the notch 132 practically does not interfere with the threading of a member to be screwed.
• the fixing member 2 conventionally comprises a receiving sleeve 22 intended to receive, for example by snap-fastening, the body of the pump or of the valve.
• the fixing member 2 defines a fixing ring 21 provided internally with a thread 210 intended to cooperate with the external thread
• the thread pitch 210 is the same as that of the thread 13.
• the fixing member 2 can define a covering 23.
• the fixing member 2 is made of material molded plastic, while the tank is made of glass, plastic or any other suitable material.
• the thread 210 of the ring 21 therefore tends to deform by creep at the level of the blocking wall 163 by enveloping the blocking edge 162 so that unscrewing is impossible.
• the thread 210 naturally tends to be biased upwards due to the support of the ring on the top 14 of the neck.
• the net 210 tends to rise on the underside of the net 13.
• the notch 132 then plays its full effect by increasing the useful surface of the blocking wall 163.
• the blocking means according to the invention can be formed for example at the level of the joint plane of half-shells necessary for molding the reservoir.
• the parting line is shown in FIG. 1 by the dotted line A which passes at the level of the locking and stopping walls 163 and 133.
• the unscrewing of an organ is more difficult while its screwing can be carried out with a force substantially identical to that which would be exerted on a traditional neck devoid of locking means.

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• Engineering & Computer Science (AREA)
• Mechanical Engineering (AREA)
• Closures For Containers (AREA)

Applications Claiming Priority (3)

Publications (2)

Family

ID=9553448

Family Applications (1)

Country Status (6)

Families Citing this family (10)

Family Cites Families (9)

• 1999
  • 1999-12-16 FR FR9916025A patent/FR2802513B1/fr not_active Expired - Fee Related
• 2000
  • 2000-12-12 US US10/149,224 patent/US6948640B2/en not_active Expired - Fee Related
  • 2000-12-12 EP EP00990058A patent/EP1240085B1/de not_active Expired - Lifetime
  • 2000-12-12 DE DE60011812T patent/DE60011812T2/de not_active Expired - Lifetime
  • 2000-12-12 WO PCT/FR2000/003474 patent/WO2001044067A2/fr not_active Ceased
  • 2000-12-12 ES ES00990058T patent/ES2222938T3/es not_active Expired - Lifetime

Non-Patent Citations (1)

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