Abstract: A finger trigger spray cap actuator for use in conjunction with a mounting cup (11) on an aerosol container including a base (5) having an integral collar (8), a finger trigger support (22); a finger trigger (3) hingedly connected to the trigger support (22), and a finger grip (39) depending from the finger trigger (3) and extending radially beyond the outer circumference of the collar (8). The present invention also relates to a method of manufacturing the finger trigger spray cap assembly including integrally molding a base portion (5) and finger trigger portion (3) as a single unit about a living hinge (10).

Abstract: A holder for an aerosol can is provided in which a pivotable trigger mechanism can actuate the aerosol can by inducing a compressive force on the lower end of the can. When inducing this compressive force, the pivotable trigger mechanism is at an angle with the holder wall. After dispersing the contents of the aerosol can, the pivotable trigger mechanism can then be rotated such that the trigger mechanism substantially covers an opening in the holder body.

Abstract: An indexing nozzle assembly for a trigger sprayer is comprised of a nozzle base that is attachable to a sprayer housing of the trigger sprayer, a cap that is mounted for rotation on the nozzle base, and a foaming tube that is mounted for linear reciprocating movement on the cap. Rotation of the cap on the nozzle base changes liquid discharge from the trigger sprayer between an off condition and at least a spray condition. In the spray condition of the nozzle cap, the foaming tube can be manually pulled and extended from the nozzle cap. With the foaming tube extended from the nozzle cap, the liquid discharge from the nozzle assembly in a spray pattern comes into contact with an interior surface of the tube and generates a foam discharge from the nozzle assembly.

Abstract: The present invention is a dispenser adapted to be coupled to a fluid container. The dispenser comprises a dispensing head, an energy source, and a fluid pathway. The dispensing head includes a fluid pump, a motor adapted to power the pump, a trigger adapted to control the motor, and a nozzle orifice in fluid communication with a discharge end of the pump. The fluid pathway has one portion in fluid communication with an intake end of the pump and another portion inside the container.

Abstract: A manually operated trigger sprayer includes U-shaped springs that bias the trigger sprayer trigger away from the trigger sprayer pump chamber, where the U-shaped springs are connected to a piston rod by a snap-fit connection. The connection includes a compressible forward end of the piston rod that is pressed through an opening on the forward end of the spring to connect the piston rod to the spring. The rearward end of the spring is connected to the sprayer housing by a curved surface that engages around an exterior surface of the pump chamber.

Abstract: The present invention is a dispenser adapted to be coupled to a fluid container. The dispenser comprises a dispensing head, an energy source, and a fluid pathway. The dispensing head includes a fluid pump, a motor adapted to power the pump, a trigger adapted to control the motor, and a nozzle orifice in fluid communication with a discharge end of the pump. The fluid pathway has one portion in fluid communication with an intake end of the pump and another portion inside the container.

Abstract: A leakproof perfume spray head structure comprises a spray head, a locking shell, an inner sleeve, a rotation shaft, a water guide pipe, and an outer cover, wherein the spray head has gaps for better communicating the gas with the perfume liquid so as to spray out more uniform perfume mists. When the spray head is opened, but not in use, the spray head can be rotated by a certain angle so as to close the inner spray tunnel of the spray head completely to prevent the perfume liquid from leakage.

Abstract: A device for dispensing a viscous fluid product, including a pump having an inlet; an outlet; a cylinder; a piston in the cylinder; and a piston rod attached to the piston with its first end being exposed. The pump pumps viscous fluid product from a container to the outlet when the inlet is submerged in the viscous fluid product and the piston rod is axially moved relative to the cylinder. The device further includes a handle attached to the piston rod; a nozzle rotatably mounted on the handle around a rotation axis, in fluid communication with the outlet, and having a discharge orifice offset from the rotation axis; and a mechanism for rotating the nozzle around the rotation axis when the piston rod is axially moved relative the cylinder so that the discharge orifice moves in a circular pattern for dispensing the viscous liquid product in a substantially helical pattern.

Abstract: A fluid dispenser system includes a container that is mounted below a mounting surface for containing a fluid. A base is mounted above the mounting surface, and the base defines an opening configured to allow passage of the fluid when filling the container. A dispenser body is detachably coupled to the base to allow removal of the dispenser for filling the container with the fluid from above the mounting surface. The dispenser body has a moveable handle that is moveable for manually pumping the fluid and a fixed spout that is fixed in position relative to the mounting surface when the fluid is dispensed from the spout.

Abstract: A fluid pump having a pusher with a push wall defining a push outside surface and an inside surface; and a peripheral skirt which extends from the inside surface of the push wall. A pump chamber is provided with an inlet valve and with an outlet valve, a dispensing orifice via which the fluid is dispensed, a main piston, and a differential piston that is mounted to move in the pump chamber in response to variation in the pressure. The differential piston is mounted to move away from the push wall when the pressure increases in the pump chamber; the pusher and the differential piston being mounted to move along an actuating axis that extends substantially perpendicularly to the push wall. The differential piston is formed integrally with an inlet valve moving member that co-operates with an inlet valve seat.

Abstract: A method for moisturizing the eye in which an amount of aqueous fluid is administered to the eye in an amount below that which causes flooding of the eye and removal of the normal tear film from the surface of the eye. The fluid, when administered in accordance with the invention, rehydrates the already present tear film rather than replacing the tear film. A kit for moisturizing the eye in accordance with the invention is also disclosed.

Abstract: An apparatus for attachment to a bucket for holding a liquid is attached to a bucket with an upper rim. A bail is pivotally attached to the bucket as in a conventional arrangement, the bail having an upper position and a lower position. The apparatus has a housing with a pump operatively attached thereto, the pump having an inlet in liquid communication with the bucket and an outlet for facilitating the pumping of liquid from the bucket, preferably through a spray wand with a nozzle at the outlet thereof. A member is pivotally attached to the housing at one end thereof and has a notch in another portion thereof. This member has at least a first pivotal position and a second pivotal position. When housing is on the rim, the bail is in the upper position thereof and the member is in the first pivotal position thereof so that a portion of the bail is in the notch for thereby holding the housing to the upper rim of the bucket.

Abstract: A fluid spraying nozzle may include a flexible spray tube, and a guide which is disposed so as to surround the outside of said spray tube in the diametral direction. The ring-shaped tube side magnet may be provided on the spray tube. A ring-shaped guide side magnet may be provided on the guide. A polarity of an outer peripheral side of the tube side magnet and a polarity of an inner peripheral side of the guide side magnet may have the same polarity.

Abstract: A manually operated trigger sprayer is constructed with a reduced number of parts and in a novel manner in which all of the component parts of the sprayer are constructed of a plastic material. The construction of the trigger sprayer replaces the conventional metal coil spring in the pump chamber with a pair of plastic bowed springs that are integral with the piston rod and are positioned outside the pump chamber. Constructing all of the sprayer parts of a plastic material enables a cost efficient recycling of the parts, which does not require disassembling the parts to remove a metal spring.

Abstract: A device for spraying a liquid, wherein the liquid is contained in a container that, in an initial state, is a unitary closed container comprising a head to be broken off or sawed off for providing the removal opening, has a spraying device to be arranged on the removal opening of the container. The spraying device has a basic spraying unit and a connecting adapter for the container, wherein the connecting adapter is fixedly connected to the spraying unit. The connecting adapter has an annular seal that rests sealingly on the container. The connecting adapter is essentially cylindrical and has a lower peripheral end provided with the annular seal. A sleeve having an upper open end and a lower end is provided. The lower end of the sleeve has a bottom. The sleeve receives the container. The sleeve is connected with the upper open end to the connecting adapter.

Abstract: An airless spray pump system and method for spraying a binder solution having suspended particles which are non-abrasive for coating a product therewith is described. A reservoir contains a supply of the binder solution and is continuously mixed to maintain the solution in a homogeneous state. An inlet check valve is connected to the reservoir and the check valve has an outlet port which is connected to a pump. The check valve is operated by an upstroke of a piston of the pump to draw a volume of a solution through the check valve and into the pump while the pump supplies, under high pressure, a solution in a transfer chamber thereof to a pressure control unit of a spray apparatus. When the piston of the pump is in a return stroke, it forces the check valve to close under pressure and simultaneously operates a transfer check valve of the pump to open to transfer solution into the transfer chamber and forces a portion of the solution to the pressure control unit.

Abstract: A dispenser adapted to be coupled to a fluid container. The dispenser comprises a dispensing head, an energy source, and a fluid pathway. The dispensing head includes a fluid pump, a motor adapted to power the pump, a trigger adapted to control the motor, and a nozzle orifice in fluid communication with a discharge end of the pump. The fluid pathway has one portion in fluid communication with an intake end of the pump and another portion inside the container. In one embodiment, the fluid pump is a peristaltic pump. The present invention may further include a valve having a membrane for controlling flow through the valve, the membrane having open and closed positions; and an element urges the membrane to the closed position, and a vacuum pressure at one end of the valve may overcome the urging of the element, thereby moving the membrane to the open position.

Abstract: A method and apparatus for dispensing of hand lotion and air freshener in a combined unit for home and office. Air freshener may be passively dispersed at a controlled rate from the apparatus, or may be actively dispersed when a user pumps the apparatus to receive a measured quantity of hand lotion. Dispersion may be implemented using a mechanical fan or compression of a sponge, for example.

Abstract: A dosing device with a manually actuated pumping means, which comprises a pumping chamber, (10) an inlet valve (7) and an outlet valve (13) in the region of a dosing opening (12), is known. According to the invention, an inlet region (9) in the region of the inlet valve (7, 8) and/or an outlet region (14) in the region of the outlet valve is/are provided with flow profiles. To be used for dispensing pharmaceutical liquids.

Abstract: An outlet hood (1) for mounting at an end of an outlet duct (3) of a spraying device for highly viscous or gel-like media. The bottom (7) of the outlet hood (1) has a uniform thickness and is provided with outlet openings (8) which diverge relative to each other. The bottom of the outlet hood (1) is outwardly arched and the outlet openings (8) have a uniform cross section over their entire length which corresponds to the thickness of the bottom (7), and the outlet openings (8) are arranged distributed over the bottom (7).

Abstract: A flat pump for producing liquid spray or for producing an atomized liquid stream may have a thickness of 6 millimeters or less. The flat pump may include an internal reservoir (3), a valve (19), a valve conduit (45) and a vortex chamber (49) wherein fluid from the reservoir may be pumped through the valve, along the valve conduit, and into the vortex chamber. An atomized liquid stream, spray, or mist formed in the vortex chamber may be expelled from the flat pump.

Abstract: A trigger spray assembly (1) has generally cubic container (2) with a trigger sprayer (3) mounted thereon. The trigger sprayer (3) is mounted offset form the centre of the container (2) to allow stacking of mutually inverted containers (2). A top (4) of the container (2) in combination with an uppermost surface of the trigger sprayer (3) forms a support surface for reception and support of another container (2) stacked thereon. Container (2) is space efficient, stable, and allows stacking.

Abstract: A child resistant manually actuated dispensing pump device includes a rotatable nozzle cap having a flange which defines a notch and an outer shroud having a tab which is dimensioned to engage the notch and lie substantially flush with or recessed relative to the flange so that it cannot be grasped and pulled out of the notch. When the tab is engaged in the notch, the nozzle cap cannot be rotated. The shroud is made of material which is flexible enough that it can be bent away from the nozzle cap, thereby lifting the tab out of the notch and permitting rotation of the cap. A second embodiment replaces the notch with a pair of ledges located on opposite sides of the nozzle cap, and provides a second tab on the opposite side of the shroud so that each tab engages a ledge.

Abstract: An electrically-powered fluid sprayer employs a piezoelectric fluid pump that includes an inlet port, an outlet port, a pump chamber, and a piezoelectric element that is deformed and displaced by electrical signals supplied thereto to vary the volume of the pump chamber. Such displacement pumps fluid into the inlet port and into the pump chamber and discharges fluid from the pump chamber out the outlet port. The inlet port is in fluid communication with a fluid reservoir. Spin mechanics may be disposed downstream from the outlet port of the fluid pump and upstream from the discharge nozzle. The piezoelectric fluid sprayer may be extended to include a dual chamber piezoelectric pump that pumps different fluids (e.g., a liquid and air). The output of the dual chamber pump is mixed in a manifold and supplied downstream to the discharge nozzle. Spin mechanics may be employed in the fluid stream upstream from the discharge nozzle after the mixing.

Abstract: A manually operated trigger sprayer includes a feature that limits the forward pivoting movement of the trigger. By limiting the forward pivoting movement of the trigger, the novel construction of the trigger sprayer prevents the trigger from engaging against the nozzle assembly attached to the sprayer housing of the trigger sprayer and potentially dislodging the nozzle assembly from its attachment to the trigger sprayer housing.

Abstract: The present invention relates to an apparatus and method for delivering or dispensing substances. The delivery apparatus comprises a housing, a cartridge for containing the fluid or liquid to be delivered, a conduit system, a nozzle, a pump and an actuating mechanism for actuating a stream of fluid or liquid. The delivery apparatus may include a motor and power source adapted to power the pump. The cartridge containing the fluid or liquid is typically an off-the-shelf container that may be purchased in stores, such as insecticides or household cleaners. The conduit system has an intake opening in fluid communication with the fluid inside the container and another portion in fluid communication with the intake of the nozzle. The conduit system further includes a structure for causing the stream of fluid or liquid to be generally laminar.

Abstract: A fluid product spray head (40) comprises a spray orifice (45) and a spray profile (100) upstream from this spray orifice (45). Said spray profile has a swirling chamber (101) connected, during the spraying of the product, to the spray orifice (45) and to at least one non-radial channel (110) connected to the swirling chamber (101). The spray profile (100) is provided in the bottom of the spray head (40). A obturator (38) interacts with the spray orifice (45) while being able to be displaced and/or deformed between a closing position of the spray orifice (45) and an open position of the spray orifice (45). The inventive spray head (40) has an axially hollow sleeve (150) that accommodates the spray profile (100), and said obturator (38) axially displaces and/or deforms at least partially in said sleeve (150).

Abstract: A direct-current sprayer includes a shell with an outlet therein, a valve in the outlet, a pipe leading to the valve from a pump in the shell and a hose detachably connected to the valve so that water can flow from a pump in the shell into the hose through the valve. The valve automatically blocks the flow of the water after the hose is detached from the valve.

Abstract: A manually operated dispenser for flowable media, having a container which has a supply chamber, and a pump head which can be fastened thereto and has a dispensing section with a nozzle-shaped nasal adapter having an outlet opening designed as a spray diffuser, and gripping surfaces protruding laterally from the nasal adapter, and having a protective cap, which has two wings which can be unfolded and are matched in terms of shape, for the nasal adapter, the gripping surfaces having, on opposite sides, end edges which are connected as a single piece to a wing of the protective cap via a respective film hinge, and the wings have base surfaces which overlap the gripping surfaces.

Abstract: The invention concerns a nozzle for dispensing a liquid contained in a receptacle, said nozzle comprising a rigid body provided with a dispensing channel comprising a dispensing orifice emerging in the front wall of said body, said nozzle also comprising an elastically deformable sleeve that is disposed in a non-adherent fashion and in clamping contact around at least part of the periphery of the rigid body, said sleeve being provided with at least one front lip that is disposed opposite the dispensing orifice, said lip being arranged so as, by application of the dispensing pressure of the liquid on it, to be reversibly movable between a stable closed state and stressed opening state of said orifice, in which the attachment of said sleeve on said rigid body is achieved in combination by a first means of retaining the axial movement of the rear part of said sleeve relative to said rigid body and by a second means of retaining the axial movement of another part of said sleeve relative to said rigid body.

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: A pressurized sprayer comprises a pump attachment. The pump attachment includes a body that defines a chamber in which a piston is reciprocally mounted. The piston is coupled to a handle by a shaft. The piston separates the chamber into a first portion and as second portion. The second portion in communication with an inlet valve and outlet passage. A spray nozzle is in communication with the outlet passage and is rigidly attached to the pump attachment.

Abstract: A liquid crystal dispensing apparatus includes a container to contain liquid crystal, a discharge pump, and a nozzle to dispense liquid crystal from the discharge pump onto a substrate. The discharge pump has a separably formed case, a cylinder received in the case, a piston inserted into the cylinder and having a groove at a lower portion such that the piston draws in and discharges liquid crystal by rotating and moving up-down, and a suction opening and a discharge opening through which liquid crystal is to be respectively drawn in and discharged as the piston is moved.

Abstract: A trigger type fluid dispenser (100) according to the invention includes a body (110) having a discharge flow path (111) and a cylinder (112) disposed in parallel with the discharge flow path (111), and a piston (140) in the cylinder (113) is caused to slide by a trigger (130). The trigger (130) is configured so that a hook portion (131) thereof is held to be swingable by the body (110), a turned-down portion (131) of an extension portion, which is an elastic portion (132) integrally extending from a swinging portion (114) of the hook portion (131), is held with respect to the body (110), and a tip end (132e) of the extension portion is positioned to be capable of coming into contact with the hook portion (131). The body (110) is configured so that a cover (120a) is installed to form an internal space (R) between the cover (120) and the discharge flow path (111), and a core element (150) is inserted in the discharge flow path (111) and the internal space (R).

Abstract: The invention relates to a pump intended to be mounted on a bottle so as to enable a liquid contained in said bottle to be dispensed, said pump including a pump body, an atomizer secured to a push button, a means for the elastic return of the translatory motion of said atomizer in said body, and a plunger mounted in frictional contact against the internal surface of said body so as to define a dosing chamber which is in communication with the liquid by means of a clack valve, wherein the plunger is mounted coaxially around the atomizer in an association zone, said association zone being arranged so as to enable sealed swiveling between the plunger and the atomizer.

Abstract: A sprayer includes a discharge valve assembly and includes an integrated poppet valve, spring and volume reducer. The spring includes more than omega-shaped form, each with relatively flat sides. The spring can have sides with portions sufficiently wide to substantially extend across the valve chamber to provide stability to the spring and prevent buckling. The flat sided omega-form construct is relatively easy to manufacture via molding and the ends of such construction provide suitable locations for integrated molding with the valve and the volume reducer.

Abstract: A fluid atomizer that can include an orientable extension conduit between a pump bottle and an atomizing nozzle. A brace element between the bottle and the conduit limits movement of the nozzle during actuation of the pump mechanism. A resilient enlargement to engage the bottle may be included to permit suspending the bottle in commercially available storage racks.

Abstract: The present invention is a dispenser adapted to be coupled to a fluid container. The dispenser comprises a dispensing head, an energy source, and a fluid pathway. The dispensing head includes a fluid pump, a motor adapted to power the pump, a trigger adapted to control the motor, and a nozzle orifice in fluid communication with a discharge end of the pump. The fluid pathway has one portion in fluid communication with an intake end of the pump and another portion inside the container.

Abstract: A decontamination liquid spraying appliance has a storage container for the receiving decontamination liquid, in particular of GD5 solution, and further has a spraying device flow-connected to the storage container. The appliance is used for the decontamination of objects contaminated by harmful substances. The storage container is a pressure container with a threaded orifice formed in it. The spraying device contains an adapter head that can be screwed in a pressure tight manner into the threaded orifice and which carries a regulating valve for regulating the quantity of the decontamination liquid to be sprayed. The spraying device further has a hand-actuated air pump that has a pump tube projecting into the pressure container and a pump piston displaceable in the pump tube through a piston rod led through the adapter head, in order to act upon the interior of the pressure container with overpressure.

Abstract: An improved apparatus for applying loose fill insulation generally includes an insulation feed portion and an insulation gun. The insulation feed portion is driven by a motor which is controlled by a clutch and a clutch control circuit. An insulation gun is mounted to a hose which communicates with the insulation feed portion. A switch mounted on the gun opens and closes the clutch control circuit. When the switch is closed, the clutch is engaged and air blown insulation is supplied to the gun. When the switch is open, the clutch is disengaged and air blown insulation is not supplied to the gun.

Abstract: A fluidic nozzle, for use with a trigger spray applicator that issues a desired spray pattern of fluid droplets, and wherein the applicator has a liquid delivering orifice and an exterior surface proximate the orifice that is configured to receive a spray nozzle, includes in a first preferred embodiment a member having a front and a rear surface and a passage that extends between these surfaces. A portion of this passage is configured in the form of a fluidic circuit, and the configuration of this fluidic circuit is chosen so as to provide the desired spray pattern. Additionally, the passage's rear portion may be configured so as to allow this member to fit on that portion of the spray head which is configured to receive a spray nozzle.

Abstract: A liquid condiment dispenser includes a container with a separation board to define an upper space and a lower space. An outlet is defined through a hollow body defining the lower space. A rod cooperated with a button extends through the separation board and has a first seal ring to removably seal the hole of the separation board. A second seal ring is securely engaged with an inner periphery of the second space so that when the rod is pushed, the first seal ring allows the liquid condiment in the upper space to flow to the lower space and liquid condiment is pushed from the outlet in the distal end of the hollow body. The rod is pushed upward by a spring to seal the hole again when releasing the button.

Abstract: Dispensing member for a fluid product comprising a post and a spray nozzle, said post having an abutment surface and said spray nozzle comprising a transverse wall, an outlet orifice extending across said transverse wall, said outlet orifice being delimited by a lateral surface, at least one duct for supplying the fluid product to the outlet orifice, the said supply duct being delimited by the transverse wall and the abutment surface, being supplied with fluid product via a supply channel, emerging substantially tangentially relative to the lateral surface of the outlet orifice, and forming the only fluidic communication between the supply channel and the outlet orifice.

Abstract: Atomizers for administering liquids to the cornea or conjunctiva of the eye, special eye adapters for atomizers and the use of atomizers for ophthalmological administration. The atomizers are free from propellant gas and have an energy reservoir for supplying the energy needed for the atomization process.

Abstract: A venting system of a manually operated trigger sprayer vents the interior of a liquid container connected to the trigger sprayer. The trigger sprayer is provided with a vent chamber that surrounds the pump chamber, and a vent piston that surrounds the pump piston. The vent piston is received in the vent chamber for reciprocating movements between a vent closed and vent opened position in the vent chamber, and the vent chamber having two different interior diameter sections with a larger interior diameter section reducing drag on the vent piston when the vent piston is moved to the vent opened position.

Abstract: A venting system of a manually operated trigger sprayer vents the interior of a liquid container connected to the trigger sprayer. The trigger sprayer is provided with a vent chamber that surrounds the pump chamber, and a vent piston that surrounds the pump piston. The vent piston is received in the vent chamber for reciprocating movements with the pump piston in the pump chamber. The reciprocating movement of the vent piston alternatively opens the vent chamber to the exterior environment of the trigger sprayer and thereby vents the interior of the liquid container connected to the trigger sprayer, and closes the vent chamber thereby sealing the interior of the liquid container from the exterior environment.

Abstract: A nozzle has a front, a back, and at least one flat surface extending therebetween. A door is coupled to the intersection of the front and flat surface by a live hinge. Optionally, the door has a portal within which a screen is mounted. The exterior surface of the door is provided with one or more curved hooks and the flat surface is provided with corresponding number of mating slots with which the hook(s) engage(s). Preferably, the interior of the door is provided with one or more curved hooks and a corresponding number of mating slots are provided on the front of the nozzle on an edge opposite the live hinge. Preferably, the door is provided with a tab which extends outward beyond the periphery of the nozzle on the edge of the door opposite the live hinge.

Abstract: A specialized nozzle assembly that dispenses spray patterns of varying textures, e.g., coarse or fine particles; for use in an aerosol system for applying a spray texture material to a wall or like supporting structure. The nozzle assembly includes an elongated passageway and a generally cone-shaped member attached thereon.

Abstract: A pump-dispensing atomizer includes a dispensing pump with a closure to engage with a container. The dispensing pump includes a pressing button with a booster chamber formed inside, a nozzle with one end extending from the pressing button and a probe formed with at least one section. An interior of the nozzle is formed with a guide chamber, and one end of the guide chamber is connected to the booster chamber. The guide chamber has at least one expanding sub-chamber. After the probe is disposed in the guide chamber, a boosting channel is formed between the expanding sub-chamber and the stepped section. Moreover, the pressure accumulator is mounted on the other end of the nozzle, which is formed with a spraying opening communicated to outer environment. As such, the pressure of liquid flowing in the nozzle will be increased effectively so that liquid is sprayed out with a higher pressure to increase the spraying speed of the liquid.

Abstract: The push-button is made up of two parts which fit into each other and define between them a whirl chamber, a part of which is formed by a cavity (38) defined inside the outer part on a face of the latter that is tilted in a direction and at a sufficient angle (?), suitable for making it possible to remove the outer part from the mould “along the axis” without damaging the cavity.