Abstract: A pressurized aerosol sprayer and method of making a pressurized aerosol sprayer are disclosed. In one embodiment the aerosol sprayer includes an aerosol sprayer actuator attached to an aerosol container, wherein the sprayer actuator includes an actuator housing, a trigger piece having a trigger and operatively associated with the actuator housing to activate the release of fluid from the container, a nozzle in fluid communication with the container, and a trigger loop encircling the trigger.

Abstract: The invention relates to a dispensing device (1) for dispensing a product. The dispensing device comprises: a container (2) containing the product under pressure, the container having a top (7), bottom (5) and body portion (8), an axial direction being defined between the bottom and top; a valve mechanism (3) mounted at the top of the container, the valve mechanism being movable with respect to the container for pressurized discharge of the product out of the container; and a dispensing cap (4) mounted on the top of the container. The dispensing cap carries: a nozzle (21) debouching outside the cap for spraying the product, the nozzle being connected to the valve mechanism by a conduit; and art actuating member (23) having a horizontal arm (25) and a vertical arm (24). The horizontal arm is hingedly suspended in the cap and engages the valve mechanism to actuate the valve mechanism upon pulling the vertical arm towards the container portion.

Abstract: The present invention provides an actuation device for a spray can of the type comprising a curl portion at the top of the spray can and a nozzle through which a pressurized fluid is dispensed through a top portion thereof. The actuation device includes a lever. The lever has an elongated slot through a portion thereof for receiving a portion of the nozzle. The lever also has a handle at one end and an engaging surface at the other end. The engaging surface engages the curl of the spray can and securely holds the actuation device on the spray can. When a force is applied to the handle to urge the handle towards the spray can, the lever depresses the nozzle to thereby dispense the pressurized fluid therethrough.

Abstract: A lever of an aerosol valve having a valve stem includes a lever member having first and second end portions, a first aperture disposed in the first end portion, and a second aperture disposed between the first and second end portions. The first aperture is configured to permit the lever member to be releasably received over a valve stem of an aerosol valve in a dispensing position, in which the second end portion extends outwardly from the valve stem to provide for pivotally displacing the valve stem to dispense product therethrough. The second aperture is configured so that the lever member fits in a stored position with the second aperture around a portion of the valve stem, and the first and second end portions extending alongside the valve stem, such that the lever member may be stored under a cover.

Abstract: A housing is formed of a peripheral wall, an upper face and a lower edge. The housing is positionable upon a spray container. The housing has securing members holding the housing to a spray container. A dispensing assembly has projections. The dispensing assembly has aligned apertures. The dispensing assembly has a rotatable member. The rotatable member has a linear region. The rotatable member is received in the aligned apertures. The dispensing assembly has a handle extending from the linear region to a location spaced from a container. The dispensing assembly also has a planar arm secured to the linear region. The arm has a threaded aperture a threaded adjustment bolt. The bolt is rotatably received in the threaded aperture. The adjustment bolt has a lower tip in contact with a head for the depressing of a head and dispensing of contents from a container upon squeezing of the handle.

Abstract: A trigger actuator for a container includes a recess defined by one or more walls that protrude downwardly surrounding an actuating button of an overcap of the container, wherein the trigger actuator is attached to the actuating button. The trigger actuator further includes an aperture disposed in the recess above an outlet in the actuating button and a lever disposed on a side of the trigger actuator. Pressing the lever towards the container forces the walls defining the recess downward displacing the actuating button.

Abstract: A fluid dispensing device is disclosed having a body housing a pump action fluid discharge device having a dispensing nozzle. The fluid dispensing device comprises a body defining a cavity and a dispensing nozzle having a dispensing orifice, a fluid discharging device housed in the cavity, the fluid discharging device having a hollow casing defining a reservoir for containing a volume of fluid and a plunger slidingly engaged within the hollow casing, the plunger having a tubular portion which extends from a first end of the hollow casing for co-operation with the dispensing nozzle to enable pumped delivery of fluid from the reservoir to the dispensing nozzle, wherein the dispensing orifice of the dispensing nozzle is provided with a reversible stopper.

Abstract: A combination includes a product container having a longitudinal dimension and a valve oriented to discharge product generally longitudinally therefrom. Valve actuating apparatus extends laterally from the valve in a direction transverse to the longitudinal dimension and terminates at an outer peripheral surface. A housing has a wall that tapers to a discharge opening, and the discharge opening has a size larger than a radius of the container but smaller than the greatest lateral extent of the valve actuating apparatus. The outer peripheral surface is disposed in interfering relationship with the wall when the container is disposed in the housing.

Abstract: The invention relates to a dispenser for dispensing an adhesive or sealant from a vessel, in particular from a pressurized vessel, via a valve. For this purpose, the dispenser is equipped with a lever with a grip region for actuating the valve. The dispenser also has an attachment, on which the lever is fitted in a pivotable manner, and an actuator with a supporting region for the lever. The actuator is configured such that it can be rotated relative to the attachment, and the supporting region is therefore variable, in order to change the effective lever path for the actuation of the valve, for activating or deactivating the dispenser or for varying the volume flow as product is dispensed.

Abstract: A pressurized receptacle that dispenses viscous product from a container that has a dispensing valve. The dispensing valve has a valve pot that is secured in the container opening which seats a spring that biases a dispensing stack and a valve element to a closed position. The biasing position can be selectively overcome by a rotary collar that interacts with a helical ramp that can house at least one stud that drives the dispensing stack and thereby the valve element open to allow dispensation to occur.

Abstract: A pressurized spray system. The spray system has a flow path through which contents must pass to be dispensed from the system to the atmosphere. By maintaining the proper proportions of restrictions in the flow path to the spray nozzle exit orifice, a relatively constant mean particle size distribution may be obtained throughout the life of the spray system as the pressure decays.

Abstract: A sprayer actuator, a sprayer, and a method of making the same are disclosed. In one embodiment, the sprayer includes an ergonomic sprayer actuator with a housing having an upper portion, a lower portion for fitting over a can, and a narrowed waist portion between the upper portion and the lower portion.

Abstract: A device for holding and actuating a can includes a body, a holder and a trigger. The can includes a neck, a rim formed on the neck, a push-button valve and a nozzle installed on the push-button valve. The body includes a handle and a connective portion extended from the handle. The holder is arranged on the connective portion of the body and is formed with two jaws for clipping the neck of the can and for supporting the rim of the can. The trigger is installed on the handle and is formed with a first end to be operated by a user's finger and a second end inserted into the holder for contact with the push-button valve of the can.

Abstract: A device for holding and actuating a sprayer includes a holder and a trigger. The sprayer includes a neck, a rim formed on the neck, a push-button valve and a nozzle provided on the push-button valve. The holder includes a handle, a barrel extending from the handle and a clamp extending from the barrel. The clamp includes two jaws formed thereon, a mouth defined between the jaws and a gap defined between the jaws. The neck of the sprayer can be pushed into the mouth through the gap. The trigger is connected to the holder so that the trigger is operable to push the push-button valve of the sprayer.

Abstract: The invention is a dual-axis force transmission mechanism that operates as an actuator for the valve of fluid dispensing devices. It comprises a rotating trigger member (101) that pivots as a force is applied by the operator. The transmission mechanism preferably includes a rack and pinion arrangement in which a pinion gear (108) located on the rotatable trigger member (101) intermeshes with a rack gear (107) located on the opposing force transmission frame. This mechanism inter-converts a force applied to the rotatable trigger (101) into a rectilinear force that is then transmitted to operate the fluid dispensing valve.

Abstract: An apparatus for extending the reach of a dispenser is disclosed. The apparatus is configured to secure a dispenser so that an activation mechanism of the apparatus causes a release mechanism of the dispenser to trigger. When the release mechanism of the dispenser is triggered, content contained in the dispenser is released from the dispenser and through an opening of the apparatus. The activation mechanism is positioned on the apparatus to extend the normal reach of the dispenser. Therefore, a user can easily apply body products to hard-to-reach areas of the body.

Abstract: A mechanical actuator for attachment to a conventional aerosol can to allow for holding the can with a comfortable handle and controlled dispensing of substances, such as spray paint, using a trigger-type actuator. The device further includes a quick can loading and unloading system including a resilient band that facilitates rapid hands free unloading and one hand loading of aerosol cans. A manual actuator is provided to selectively stretch the band to facilitate loading (and unloading) of aerosol cans. Relaxing the manual actuator allows the resilient band move into constricted engagement with the can.

Abstract: A pressurized aerosol sprayer and method of making a pressurized aerosol sprayer are disclosed. In one embodiment the aerosol sprayer includes an aerosol sprayer actuator attached to an aerosol container, wherein the sprayer actuator includes an actuator housing, a trigger piece having a trigger and operatively associated with the actuator housing to activate the release of fluid from the container, a nozzle in fluid communication with the container, and a trigger loop encircling the trigger.

Abstract: A handle attachment for mounting to a standardized valve mounting cup of a spray can and operating a push-type dispenser valve. The handle attachment includes a housing that defines a grip and a cap configured to couple with an outer diameter of the valve mounting cup. An actuation device is pivotally mounted to the housing and includes a trigger portion disposed adjacent the grip and a finger portion disposed within the cap for actuating the push-type dispenser valve. A C-shaped rim is disposed on the cap and defines a central opening sized to accommodate the valve mounting cup, a base located on the axis of symmetry of the rim, a circumferential gap located on the axis of symmetry diametrically opposite the base and separating two ends of the rim, and at least one slot disposed between the base and a diametrical chord perpendicular to the axis of symmetry.

Abstract: A trigger type head cap for an aerosol sprayer is provided which when in discharging and eliminating a residual gas inside of an aerosol container, allows the residual gas to be easily and reliably discharged and eliminated.

Abstract: A trigger actuator for a container includes a recess defined by one or more walls that protrude downwardly surrounding an actuating button of an overcap of the container, wherein the trigger actuator is attached to the actuating button. The trigger actuator further includes an aperture disposed in the recess above an outlet in the actuating button and a lever disposed on a side of the trigger actuator. Pressing the lever towards the container forces the walls defining the recess downward displacing the actuating button.

Abstract: A housing can be mounted to a pistol or other weapon and conveniently fired therefrom and can be used as a discrete weapon itself. A cap has a central aperture which secures the nozzle and/or valve stem of a canister of chemical irritant from movement and is secured to the proximal end of a hollow tube. A feature of the new invention is a slot access running along the length of the tube for some distance from its distal end. The tube may be either open or closed at its distal end. Toward the distal end of the tube, an interior ridge or stop cooperates with the cap aperture to secure the canister of irritant. When a canister is installed in the housing, the operator can release an irritant spray axially from the canister by pressing a digit against the side of the canister's storage cylinder and, thereby, displace its longitudinal axis along an arc. The housing need have no other mechanisms, except the housing and canister.

Abstract: A cover and trigger assembly is provided that includes having a valve that can be actuated for dispensing the contents of the can through an outlet of the valve. The assembly includes an annular component having a helical surface is secured to the can, and a cover coupled to the annular component. The cover has an opening through which a trigger extends, and the cover is rotatable relative to the helical surface on the annular component for rotatably raising or lowering the cover relative to the annular component. The raising or lowering of the cover respectively prohibits or permits movement of the trigger member to actuate the valve, thereby controlling dispensing operation of the valve.

Abstract: A trigger actuator for a container includes a recess defined by one or more walls that protrude downwardly surrounding an actuating button of an overcap of the container, wherein the trigger actuator is attached to the actuating button. The trigger actuator further includes an aperture disposed in the recess above an outlet in the actuating button and a lever disposed on a side of the trigger actuator. Pressing the lever towards the container forces the walls defining the recess downward displacing the actuating button.

Abstract: A pressurized spray system. The spray system has a flow path through which contents must pass to be dispensed from the system to the atmosphere. By maintaining the proper proportions of restrictions in the flow path to the spray nozzle exit orifice, a relatively constant mean particle size distribution may be obtained throughout the life of the spray system as the pressure decays.

Abstract: An apparatus has a vertical tower that holds a plurality of containers in spaced vertical alignment. A control knob is connected to a cam mechanism which, upon rotation thereof, serves to move a linkage to operate actuator levers between an OFF position and an ON position relative to discharge nozzles of the containers. In the ON position, the actuator levers depress the discharge nozzles to cause simultaneous sprayed release of a sunless tanning product from the plurality of containers The tower is surrounded by a housing having vertically arranged nozzle openings aligned with the nozzles of the spray containers.

Abstract: In a combustion-powered fastener driving tool employing a fuel cell having an internal fuel metering valve with an axially reciprocating delivery stem, an actuator is provided for causing the dispensing of a desired dose of fuel from the fuel cell prior to each combustion event, the actuator including at least one actuator element configured for exerting an axial force on the stem, releasing the dose of fuel, and a fuel conduit associated with the element and being in fluid communication with the stem for transmitting the fuel for delivery to a combustion engine.

Abstract: A dispenser trigger head for a container provided with a dispenser rod, the head comprising a base configured to be fastened on the container; a lever hinged to the base, the lever defining a actuation surface located to the side of the dispenser head; and an endpiece carried by and molded integrally with the lever, the endpiece being configured to couple to the dispenser rod and being in communication with at least one composition ejection orifice for ejecting composition in a forward direction.

Abstract: A pressurized spray system. The spray system has a flow path through which contents must pass to be dispensed from the system to the atmosphere. By maintaining the proper proportions of restrictions in the flow path to the spray nozzle exit orifice, a relatively constant mean particle size distribution may be obtained throughout the life of the spray system as the pressure decays.

Abstract: A pressure regulating valve reduces the increased internal pressure in an aerosol spray can, filled with compressed gas, to a working pressure level for a spray valve (12). A regulating piston (52) is kept in equilibrium by a restoring force, and a sealing point (66, 68) is provided, which is closed at a pressure in the pressure regulation chamber (84) that is above the regulated pressure level. To prevent the precision of regulation from being adulterated by the decreasing internal pressure of the can as its contents are progressively withdrawn, a sealing means (86, 66; 67) is proposed, which seals off one free end of the piston (52, 74) from the internal pressure of the can and the regulated pressure. The variable internal pressure of the can is therefore no longer able to act on any axial face of the piston (52), and despite what may be a smaller piston face area, the precision of regulation is improved.

Abstract: An apparatus for blending two different components, comprising: two vessels each containing one of said components, connection means to which said components are separately fed from said vessel, and an actuation device which initiates the entry of the components into said connection means from said vessels at a predetermined ratio, where a pressurized vessel each is provided as a vessel from which said component is discharged by means of an expulsion agent via a valve, the valves of said vessels being operated via the actuation device.

Abstract: A spray nozzle designed to be mounted in a push button of a liquid distribution system, including a body equipped with an assembly tube that is defined by a front wall in which a distribution orifice is formed, wherein the inside face of the front wall is equipped with a vortex chamber that communicates with the distribution orifice, at least two radial tubes to supply liquid to the vortex chamber, and an annular duct to supply liquid to the upstream end of the tubes, in which the lateral inside wall of the tube is equipped with at least two axial grooves which respectively extend between an upstream end opening onto the rear edge of the tube and a downstream end opening onto the annular duct, wherein the grooves are positioned angularly so that each downstream end of a groove is equidistant from the two upstream ends of the tube adjacent to it on either side along the length of the annular duct.

Abstract: A valve assembly for use with a dispensing apparatus comprises a valve, a lever arranged to open the valve to dispense product, and variable spacer means arranged to limit the travel of the lever by a variable amount according to the relative position of the lever and the variable spacer means. The variable spacer means includes a plurality of spacer portions of differing thickness, each spacer portion being arranged to limit the travel of the lever by a predetermined amount. One spacer portion may be arranged to allow a full range of travel of the lever so that by pressing the lever fully the valve is fully opened. Another spacer portion may be arranged to allow a partial range of travel of the lever so that the valve is opened to an intermediate flow setting. Further spacer portions may be arranged to provide further intermediate flow settings.

Abstract: The invention relates to a dispensing device (1) for dispensing a product. The dispensing device comprises: a container (2) containing the product under pressure, the container having a top (7), bottom (5) and body portion (8), an axial direction being defined between the bottom and top; a valve mechanism (3) mounted at the top of the container, the valve mechanism being movable with respect to the container for pressurized discharge of the product out of the container; and a dispensing cap (4) mounted on the top of the container. The dispensing cap carries: a nozzle (21) debouching outside the cap for spraying the product, the nozzle being connected to the valve mechanism by a conduit; and art actuating member (23) having a horizontal arm (25) and a vertical arm (24). The horizontal arm is hingedly suspended in the cap and engages the valve mechanism to actuate the valve mechanism upon pulling the vertical arm towards the container portion.

Abstract: A mixing device for use atop a plurality of containers that contain constituents that are to be mixed and dispensed is described. The device includes a head having an outlet and a cartridge that has inlets for accepting constituents from each of the plurality of containers, a mixing chamber, and a nozzle for dispensing a mixed product extending through the opening in the head. The device includes a means for securing the head to the containers. A mixing system can include the device together with the containers holding the constituents to be mixed.

Abstract: A fluid dispenser device having a body (10), a fluid reservoir (20) containing one or a plurality of doses of fluid, a piston (30) designed to slide in the reservoir so as to dispense a dose of fluid each time the device is actuated, and actuator (40) for displacing the piston (30), the device being characterized in that it includes at least two laterally-actuated elements (50, 60) distributed around the body (10), the laterally-actuated elements (50, 60) being displaced simultaneously in a direction that is approximately transverse to the central axis of the device, and each co-operating with a peripheral edge (41) of the actuator (40) so as to exert an axial force thereon.

Abstract: An actuator for an aerosol container having a valve with a projecting valve stem includes an actuator button having an outlet for coupling to the valve stem. A crossbar is disposed between the container and the actuator button. The crossbar is movable with respect to the valve stem between at least a first position blocking depression of the actuator button with respect to the valve stem and a second position permitting depression of the actuator button with respect to the valve stem. The crossbar preferably can be moved from either side of the actuator, and one or more springs preferably are carried by the crossbar for engaging the container and biasing the crossbar to the first or blocking position.

Abstract: A portable oxygen supply unit for breathable air with an enhanced oxygen content has a tilt valve in a mounting cup on a pressurized container containing medical or aviators oxygen. A hollow housing is sealed to the mounting cup. The hollow housing is flowably connected to a mouthpiece and to an inlet for ambient air. A user can open the tilt valve with an actuator that is slidable in the hollow housing. When the valve is open, the pressurized oxygen flows into the hollow housing. As the user inhales through the mouthpiece the oxygen released from the container is diluted with ambient air drawn through the inlet for efficient use of the oxygen dispensed from the container.

Abstract: A device is disclosed for holding and actuating a sprayer. The sprayer includes a neck, a rim formed on the neck, a push-button valve and a nozzle provided on the push-button valve. The device includes a holder and a trigger. The holder includes a handle, a barrel extending from the handle and a clamp extending from the barrel. The clamp includes two jaws formed thereon, a mouth defined between the jaws and a gap defined between the jaws. The neck of the sprayer can be pushed into the mouth through the gap. The trigger is connected to the holder so that the trigger is operable to push the push-button valve of the sprayer.

Abstract: A butter heating and dispensing system for facilitating dispersal of melted butter. The system includes a container assembly, a spray assembly, and a heating assembly. The container assembly includes an interior space for receiving a quantity of butter to be melted and dispensed. The spray assembly is operationally coupleable to the container assembly. The spray assembly includes an intake for liquid butter, and a spray nozzle for dispersing the liquid butter. The heating assembly is for providing thermal energy to melt the butter received by the container assembly. The heating assembly is thermally coupleable with the container assembly. Most preferably, the container assembly has a sloped bottom wall, which slopes downwardly towards the intake of the spray assembly.

Abstract: A device is provided for holding and actuating a can. The can includes a neck, a rim formed on the neck, a push-button valve and a nozzle installed on the push-button valve. The device includes a body, a holder and a trigger. The body includes a handle and a connective portion extended from the handle. The holder is arranged on the connective portion of the body and formed with two jaws for clipping the neck of the can and for supporting the rim of the can. The trigger is installed on the handle and formed with a first end to be operated by a user's finger and a second end inserted into the holder for contact with the push-button valve of the can.

Abstract: A mechanism to provide a convenient means for releasing the contents of an aerosol can while reducing finger-fatigue and preventing the contents from adhering to the finger tip. This invention is comprised of a base that is easily mounted to the ring of an aerosol can with a lever that is hinged from the base and extends down along the side of the aerosol can. A single hand can grasp the can and depress the lever which will hinge down and push the nozzle and thereby release the contents.

Abstract: A spray can holding and actuation device comprises a rim engagement element and a locking mechanism for compressing the rim engagement element against the rim surrounding the push-button valve on the can. The rim engagement element includes a compressible collar that is joined to a shroud that depends downwardly from a front portion of the device. The collar is dimensioned to fit around the rim, and it has a pair of opposed ends separated by a gap. In one embodiment, the locking mechanism includes a locking element that is attachable to the opposed collar ends when the ends are urged together to compress the collar against the rim. In another embodiment, the locking mechanism includes a latch that is pivotably attached to one of the collar ends and that is pivotable to a position in which it engages the other collar end and rim, whereby the collar ends are urged together to compress the collar against the rim.

Abstract: An apparatus to discharge an aerosol canister in remotely located places includes a handle that has axially opposed end portions wherein the proximal end portion detachably receives an auxiliary support pole. The handle further includes an eyelet laterally extending away therefrom and situated adjacent to the proximal end portion. An elongated arm formed from deformably resilient material has axially offset end portions secured to the distal end portion of the handle and positioned distally therefrom respectively. A mechanism is included for pivoting the arm in such a manner that the arm is engaged and disengaged with a spray nozzle of the aerosol canister. A support assembly is fastened to the arm in so that the support assembly maintains the aerosol canister at a static position when the arm is toggled between the engaged and disengaged positions, wherein the user can discharge the aerosol canister contents without directly contacting the nozzle.

Abstract: A pressure container is used for receiving viscous substances and has an outlet valve (14) which can be displaced between a closed position and an open position. A movable valve element (18) can be moved in the direction toward the interior of the container for unblocking an opening cross section. Since, on the one hand, a large opening cross section is desired and, on the other hand, it is necessary to overcome a very high initial resistance because of particles penetrating into the interior of the container, it is proposed to provide at least two opening cross sections which can be unblocked in sequence by actuating the valve. By means of this an initial small actuating force is achieved along with a still large opening cross section when the valve (14) is completely opened.

Abstract: The apparatus is designed to dispense an aerosol product from a pressurized cylindrical cannister having a depressible nozzle at one end. The dispenser is pistol-shaped, formed of a generally cylindrical body and a downwardly extending handle with a trigger. The body defines an elongated recess adapted to receive and engage the cannister, with the nozzle situated substantially along the axis of the body. The dispenser body has a nose part moveably mounted in the front end. Means are provided for connecting the trigger to move the nose part relative to the body to depress the canister nozzle such that the product is released through an opening in the nose part.

Abstract: A dispensing assembly is provided for a container of fluent material. A hand-operable dispenser cartridge is adapted to be mounted to the container. An actuator, which may include a nozzle or spout, is mounted on the cartridge. A locking sleeve is mounted around the cartridge and has an upper abutment edge and a recess. The locking sleeve can be rotated between a first rotated position preventing actuation of the dispensing assembly and a second rotated position permitting actuation of the dispensing assembly.

Abstract: A standard stem and nozzle arrangement for a pressurized dispensing container which dispenses product such as caulk, has an engagement that holds the stem to the sealing boot so that when the nozzle is rotated, the stem will stay in place. Thus, any binding between nozzle and stem due to cured or dried dispensed product can be overcome by twisting the nozzle hard enough to break such a seal without causing the stem to rotate. The engagement is shown as a set of wedge-like projections that extend up from the button of the stem into the resilient sealing boot.

Abstract: A spray can holding and actuation device comprises a rim engagement element and a locking mechanism for compressing the rim engagement element against the rim surrounding the push-button valve on the can. The rim engagement element includes a compressible collar that is joined to a shroud that depends downwardly from a front portion of the device. The collar is dimensioned to fit around the rim, and it has a pair of opposed ends separated by a gap. In one embodiment, the locking mechanism includes a locking element that is attachable to the opposed collar ends when the ends are urged together to compress the collar against the rim. In another embodiment, the locking mechanism includes a latch that is pivotably attached to one of the collar ends and that is pivotable to a position in which it engages the other collar end and rim, whereby the collar ends are urged together to compress the collar against the rim.

Abstract: A dispenser head comprising a connection sleeve (20), a dispenser orifice (31), a duct (123) connecting said connection sleeve (20) to the dispenser orifice, and a press surface (11), the head further comprising a shutter (4) that is housed, at least in part, in said duct (123), and that is resiliently biased by spring means (47) towards said dispenser orifice (31), said shutter (4) including a contact zone (41) that bears in resilient leaktight manner against the dispenser orifice (31) so as to seal it hermetically, said shutter being axially movable against the spring means in such a manner as to withdraw its contact zone from the dispenser orifice, thereby creating an outlet passage for the fluid, the shutter including at least one abutment zone (440) that is resiliently biased by the spring means against a fixed support zone (34).