Plastic and nonmetallic article shaping or treating: processes – Mechanical shaping or molding to form or reform shaped article – To produce composite – plural part or multilayered article
Reexamination Certificate
1998-10-26
2001-04-17
Ortiz, Angela (Department: 1732)
Plastic and nonmetallic article shaping or treating: processes
Mechanical shaping or molding to form or reform shaped article
To produce composite, plural part or multilayered article
C264S267000, C264S273000, C264S274000
Reexamination Certificate
active
06217808
ABSTRACT:
FIELD OF THE INVENTION
The present invention relates to devices for packaging and dispensing a substance, in particular a cosmetic, and more precisely the invention relates to a valve for fitting to a device that comprises a receptacle suitable for containing the substance and for storing it under pressure. The valve is of the type comprising an actuator rod and a valve body. The actuator rod has a passage through which the substance to be dispensed passes. The valve includes closure means suitable for being held in the receptacle by the valve body and suitable for closing said passage, and the actuator rod can be displaced inside the valve body between a first position in which said closure means close said passage, and a second position in which said passage is released to enable the substance to be dispensed. The valve also comprises resilient return means for returning the rod to said first position.
BACKGROUND OF THE INVENTION
Patent FR 2 035 669 proposes a valve of the above-specified type that comprises inclined flexible fins integrally molded with the actuator rod and designed to exert a resilient return force urging the rod into a closure position. An advantage of that type of valve, which is made entirely out of plastics material, is the absence of any metal parts in contact with the substance to be dispensed.
OBJECTS AND SUMMARY OF THE INVENTION
An object of the invention is to further improve a valve of the above-specified type, in particular making it easier to mount the valve on the receptacle of the packaging and dispensing device.
The invention achieves this object by the fact that said resilient return means comprise at least one bridge of material interconnecting the actuator rod and the valve body, suitable for deforming resiliently and suitable for urging the actuator rod into said first position, the valve body, the actuator rod, and said bridge of material being made by a dual-injection molding technique, the body and the rod being made of a first plastics material and the bridge of material being made of an elastomer, second plastics material, said plastics materials being selected in such a manner that said bridge of material can be assembled to the rod and the body by local melting of the material during molding.
The invention makes it possible to obtain a valve whose structure is relatively simple and compact, unlike known valves that are integrally molded using a single plastics material. The handling and installation of a valve of the invention in the receptacle of the packaging and dispensing device are made easier.
In an embodiment of the invention, said bridge of material is constituted by a portion of a disk fixed via a single face to the bottom end of the valve body and to the bottom end of the actuator rod. Advantageously, the disk includes openings between annular regions respectively in contact with the actuator rod and the valve body, and it is shaped so as to be pre-stressed when said actuator rod is in said first position.
In an embodiment of the invention, the valve body has an annular projection on its periphery suitable for being retained by crimping in the receptacle.
The invention also provides a method of manufacturing a valve as defined above, and a packaging and dispensing device fitted therewith.
REFERENCES:
patent: 3248015 (1966-04-01), De Giorgi
patent: 3613964 (1971-10-01), Gronemeyer et al.
patent: 3618833 (1971-11-01), Webster
patent: 3657407 (1972-04-01), Gronemeyer et al.
patent: 3841602 (1974-10-01), Mildern
patent: 3862741 (1975-01-01), Steiman et al.
patent: 4385025 (1983-05-01), Salerno et al.
patent: 4410479 (1983-10-01), Cyriax
patent: 4743422 (1988-05-01), Erling et al.
patent: 4840760 (1989-06-01), Oishi
patent: 5062452 (1991-11-01), Johnson
patent: 5304336 (1994-04-01), Karlsson et al.
patent: 5441679 (1995-08-01), Chalich
patent: 5705112 (1998-01-01), Gram
patent: 0 128 595 (1984-12-01), None
patent: 1111463 (1956-02-01), None
patent: 1379202 (1964-04-01), None
patent: 1379202 (1964-10-01), None
patent: 2064449 (1971-07-01), None
patent: 2099761 (1973-03-01), None
L'Oreal
Oliff & Berridg,e PLC
Ortiz Angela
LandOfFree
Method of manufacturing an improved valve for a device for... does not yet have a rating. At this time, there are no reviews or comments for this patent.
If you have personal experience with Method of manufacturing an improved valve for a device for..., we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Method of manufacturing an improved valve for a device for... will most certainly appreciate the feedback.
Profile ID: LFUS-PAI-O-2506537