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1. WO1997042097 - MECANISME DE REMISE A L'ETAT INITIAL DE L'ORIENTATION D'UNE VALVE D'AEROSOL AFIN DE RETABLIR L'ECOULEMENT A TRAVERS LA VALVE

Note: Texte fondé sur des processus automatiques de reconnaissance optique de caractères. Seule la version PDF a une valeur juridique

[ EN ]

What is claimed is:
1. In an aerosol valve comprising:
a. a valve body having a product inlet;
b. a valve element being accommodate by said valve body and having a valve stem extending out from said valve body, and said valve element including a product outlet ;
c. spring means being compreεεively disposed between said valve element and said valve body for urging said valve element into a normally closed position for preventing the flow of product through said valve;
d. a product flow path for product being defined through said valve and interconnecting said product inlet with said product outlet;
e. a dip tube being connected to said product inlet of said valve body; and
f . a flow shutoff mechanism being formed along the product flow path, said flow shutoff mechanism having a firεt poεition which permits the flow of product past said flow shutoff mechanism and a second position which prevents the flow of product therethrough;
the improvement wherein said valve element, upon further actuation thereof against the bias of said spring means, engages with said flow shutoff mechanism to biaε said flow shutoff mechanism from the first position into the second poεition to reset said flow shutoff mechanism and again allow the flow of product past said flow shutoff mechanism.
2. An aerosol valve according to claim 1 wherein said flow shutoff mechanism comprises a product flow passage and a gravity- responsive element cooperating with said product flow passage for preventing the flow of product past said product flow pasεage.

3. An aerosol valve according to claim 2 wherein said flow shutoff mechanism further comprises a compartment including a generally vertical passage and said gravity-responsive element is located on one side of the vertical passage, said compartment has a first opening adjacent its lower end and an upper generally horizontal wall has a second opening therein, εaid first and second openings comprises a portion of the product flow path.
4. An aerosol valve according to claim 2 wherein said valve element includes a second downwardly extending tubular stem arranged to engage with said gravity-responsive element during an overstroke of said valve element, when the ball is seated against said product flow passage, to reset said flow shutoff mechanism to the firεt position and again allow the flow of product through said flow shutoff mechanism.
5. An aerosol valve according to claim 4 wherein said product flow passage is chamfered and said spring means surrounds said second downwardly extending tubular stem.
6. An aerosol valve according to claim 1 wherein εaid flow shutoff mechanism further comprises a compartment, located along the product flow path, which is opened at a top and said gravity- responsive element is ball freely movable within said compartment.
7. An aerosol valve according to claim 6 wherein said compartment is fixedly disposed at a lower end of said valve body.
8. An aerosol valve according to claim 6 wherein said compartment is integrally formed as part of the remainder of said valve body.
9. An aerosol valve according to claim 1 uεed in combination with an overcap arranged to cooperate with said valve element whereby said overcap, when in an actuation position, maintains said valve element in a continuous product discharge position.
10. An aerosol valve according to claim 1 used in combination with a product container containing a product to be dispensed, said product container includes a sidewall and opposed top and bottom surfaces, and at least a portion of said valve element extends out through said top surface of said product container for actuating εaid aerosol valve into a continuous product discharge position.
11 In an aerosol valve comprising:
a a cup- shaped valve body adapted to be installed facing outward m a mouth of an aerosol can;
b an annular resilient gasket sealmgly disposed in the open end of said valve body,
c a valve stem comprising a tubular element snugly disposed m said gasket and having a lateral opening therein normally closed by said gasket and an enlarged head normally disposed against a underside of said gasket;
d. spring means compressively diεposed between εaid valve element and εaid valve body urging εaid valve element with the enlarged head against the underside of said gasket ,
e. said valve stem having a discharge passage therein and an outlet orifice,
f . a dip tube operatively connected to said valve body so that said dip tube, said valve body, said lateral openings in said valve stem, and said tubular element constitute a flow path for the product through said valve,
the improvement comprising a flow shutoff mechanism fixed in position with respect to said valve body and disposed along the product flow path and, in a first position, normally permitting flow therethrough, said flow shutoff mechanism including a generally vertical pasεage with a gravity- reεponεive element located adjacent the vertical paεsage, whereby when said aerosol valve is open and said aerosol valve is tipped beyond a certain angle from vertical, said gravity-responsive element becomes entrained in the product flow and moves up to block off the second opening to shutoff flow of product through said aerosol valve .
12 An aerosol valve according to claim 11 wherein said valve element includes a second downwardly extending tubular stem arranged to engage with εaid gravity-responsive element, when seated againεt εaid product flow paεεage, to reset said flow shutoff mechanism to the first position and again allow the flow of product through said flow shutoff mechanism.
13 An aerosol valve according to claim 12 wherein said product flow passage is chamfered and said spring means surrounds εaid second downwardly extending tubular stem.
14 An aerosol valve according to claim 11 wherein said compartment is fixedly disposed at a lower end of said valve body and said gravity-responsive element is a ball freely movable within said compartment
15. An aerosol valve according to claim 11 used in combination with an overcap arranged to cooperate with said valve element whereby said overcap, when m an actuation position, maintains said valve element in a continuous product discharge position.
16. An aerosol valve according to claim 11 used m combination with a product container containing a product to be dispensed, said product container includes a sidewall and opposed top and bottom surfaces, and at least a portion of said valve element extends out through said top surface of said product container for actuating said aerosol valve into a continuous product discharge position.
17. In a product container containing an aerosol valve, which said aerosol valve comprising a valve body having a product inlet; a valve element being accommodate by εaid valve body and having a valve εtem extending out from εaid valve body, and εaid valve element including a product outlet; spring means being compressively dispoεed between said valve element and said valve body for urging εaid valve element into a normally closed position for preventing the flow of product through said valve; a product flow path for product being defined through said valve and interconnecting said product inlet with εaid product outlet; a dip tube being connected to said product inlet of said valve body,- and a flow shutoff mechanism being formed along the product flow path, εaid flow shutoff mechanism having a first position which permits the flow of product past said flow shutoff mechanism and a second position which prevents the flow of product therethrough;
the improvement wherein said valve element, upon further actuation thereof against the bias of said spring means, engages with εaid flow shutoff mechanism to bias said flow shutoff mechanism from the first position into the second position to reset said flow shutoff mechanism and again allow the flow of product past said flow shutoff mechanism; and
said product container being sealed with respect to the environment and at least a portion of said valve element projecting from a top exterior εurface of εaid product container for actuation of εaid valve .
18. A container according to claim 17 wherein εaid flow shutoff mechanism comprises a product flow passage and a gravity- responsive element cooperating with said product flow passage for preventing the flow of product past said product flow passage.
19. A container according to claim 17 used in combination with an overcap arranged to cooperate with said valve element whereby said overcap, when in an actuation poεition, maintains said valve element in a continuous product discharge position.
20. A container according to claim 17 said valve element includes a second downwardly extending tubular stem arranged to engage with said gravity-responεive element during an overstroke of said valve element, when the ball is seated against said product flow passage, to reset εaid flow shutoff mechanism to the firεt position and again allow the flow of product through εaid flow shutoff mechanism.