Abstract: A method for filling a pressure vessel, for example an airbag system, with a gas or gas mixture. The filling is accomplished by cooling a pressure vessel, filling said vessel with at least one type of gas at a temperature which is higher than the boiling point thereof and closing the cold vessel. A pressure is produced in the filled and closed vessel by heating said vessel at an ambient temperature.

Abstract: A device defining a chamber for receiving a substance and a thermoplastic portion in fluid communication with the chamber is provided along with a method of filling and sealing the substance within the chamber. The thermoplastic portion defines a penetrable region that is penetrable by a filling member and is heat resealable to hermetically seal an aperture therein by applying laser radiation at a predetermined wavelength and power. The thermoplastic portion comprises a thermoplastic body defining a predetermined wall thickness and includes a styrene block copolymer, an olefin and a predetermined amount of pigment allowing the body to absorb laser radiation at the predetermined wavelength, substantially prevent the passage of radiation through the predetermined wall thickness, and hermetically seal the aperture in the penetrable region in a predetermined time period.

Abstract: Described is a luffah having of a series of ruffles wherein a substantially dry, water-soluble, cleansing and/or moisturizing agent is present on the ruffles at a center portion of the luffah. Enough cleaning agent or moisturizer is present to allow the luffah to be used at least once. A method of forming a luffah herein includes injecting a substantially wet, cleansing and/or moisturizing agent at, or near, a core of a luffah which is then compressed around the injected cleansing and/or moisturizing agent. The substantially wet, cleansing and/or moisturizing agent is then allowed to dry into a generally dry, water-soluble, cleansing and/or moisturizing agent at the core of the luffah.

Abstract: The present invention is directed toward a cost effective method for filling a dispenser assembly using a high speed filling apparatus. A partially pre-assembled dispenser assembly that includes an end cap, an outer casing, and an inner fluid receiving body is placed directly onto a filling apparatus. The partially pre-assembled dispenser assembly is filled with a fluid material through an opening in the inner fluid receiving body. The inner fluid receiving body is then sealed so as to provide a fully assembled and filled dispenser assembly. The ability to provide dispensers in a pre-assembled form, combined with the compatibility of the fluid dispensers with industrial high speed filling machines, reduces the overall filling costs to the cosmetic company, as well as the cost to the consumer.

Abstract: A gas charging device includes a housing section (61), a gas charging section (62), a lid (64) and an opening member (65). The housing section houses a gas ejection device (1) provided with a gas container (5) and an operating member (9) for opening/closing the gas container. The gas charging section is formed with a supply duct (68) for supplying the gas and a discharge duct (69) for discharging the gas and is faced by one end of the housing section (61). The lid may hermetically seal the gas charging section (62). The operating member may be engaged with the operating member (9) to open the gas container (5). The gas charging section (62), in the housing section (61) of which the gas ejection device (1) is housed, is hermetically sealed by the lid (64), and the gas container (5) of the gas ejection device (1) is opened by the opening member (65).

Abstract: A system for managing liquid supply suitable for a process equipment with a liquid tank is disclosed. The system includes a host, a data-reading tool, a system controller and a tank-locking device. The host stores a built-in liquid database. The data-reading tool used for reading data related to the liquid tank is electrically connected to the host. The host receives the data related to the liquid tank from the data-reading tool, and the received data mapped with the liquid database. The system controller drives the tank-locking device according to the signal from the host to whether or not allow replacement of the liquid tank.

Abstract: A tool that can be used to load catalyst into a chemical reactor. In a preferred embodiment, the tool may also be used to measure the outage in the reactor tube. Also in a preferred embodiment, the tool provides a way to prevent dust from accumulating on the upper tube sheet of the reactor while loading catalyst into the reactor tubes.

Abstract: Keg filling plant for filling kegs with a liquid beverage material, such as beer, wine, soft drinks, or juice, and a method of operating same, and a handling and treatment station for kegs. The abstract of the disclosure is submitted herewith as required by 37 C.F.R. §1.72(b ). As stated in 37 C.F.R. §1.72(b ): A brief abstract of the technical disclosure in the specification must commence on a separate sheet, preferably following the claims, under the heading “Abstract of the Disclosure.” The purpose of the abstract is to enable the Patent and Trademark Office and the public generally to determine quickly from a cursory inspection the nature and gist of the technical disclosure. The abstract shall not be used for interpreting the scope of the claims. Therefore, any statements made relating to the abstract are not intended to limit the claims in any manner and should not be interpreted as limiting the claims in any manner.

Abstract: A method and apparatus for delivering biomass fuel to a structure through an external wall of the structure is disclosed. The apparatus comprises a hopper disposed within a delivery vehicle. The hopper includes an inlet disposed on its top surface to receive biomass fuel and an outlet located proximate the bottom of the hopper to release the fuel by opening a gate valve. A delivery hose is connected to the hopper outlet at one end and is sealably connectable at its other end to an externally accessible coupling disposed on an external wall of the structure to which fuel is to be delivered. The coupling is connected on the interior side of the external wall to a delivery pipe that connects to a fuel bin for storing the biomass fuel. Sensors within the bin can signal the operator when the level of fuel within the bin reaches a preselected level, allowing the operator to stop delivery when the bin is full.

Abstract: Device and method for needle penetrating and filling a chamber with a predetermined substance, and laser resealing a resulting needle hole in the device. A needle penetrable and laser resealable portion is pierceable with a needle to form a needle aperture therethrough to fill the chamber, and is laser resealable to hermetically seal the needle aperture by applying laser radiation. The needle penetrable and laser resealable portion defines a predetermined wall thickness in an axial direction thereof, and includes a thermoplastic that substantially prevents the formation of particles released into the chamber during penetration by and withdrawal of the needle.

Abstract: The invention concerns a method for conditioning a viscous product contained in storage containers having a capacity ?50 l, preferably ?100 l, in volume units adapted to utilization and having a capacity ?50 l, preferably ?10 l, said viscous product being preferably selected among the group whereof the viscosity is not less than 10 Pa's and, preferably ranging between 10 Pa's and 200 000 Pa's.

Abstract: An apparatus for lifting a load and transferring the load to an inverted orientation for placement includes a fixed frame, a first moveable frame slidably connected to the fixed frame to move longitudinally relative thereto, a second moveable frame sidably connected to the first moveable frame to move longitudinally relative thereto upon movement of the first moveable frame relative to the fixed frame, and a load platform pivotally connected to the second moveable frame so as to allow rotation of the load platform and a load carried thereon so as to invert the orientation of the load. In a preferred embodiment the apparatus for lifting and transferring is integrated with a beverage dispenser for lifting a large water bottle to the top of the dispenser, and inverting and placing the water bottle on the dispenser for use. In another embodiment a mobile lifting apparatus is provided.

Abstract: The invention relates to the first-time filling of a liquid conducting system in an inhaler. According to the invention, a pressure that is built up in the reservoir by mounting the closure thereupon is released when the reservoir is inserted into the inhaler so as to displace liquid from the reservoir by means of the liquid conducting system such that the dead volume of the liquid conducting system is filled with liquid and the nozzle is connected in an air-free manner to the liquid store.

Abstract: A machine for packaging solid pharmaceuticals includes a plurality of storage locations for storing a variety of pharmaceutical dispensing canisters and a robotic arm for retrieving said dispensing canisters and providing the canister at a location proximate the package to be filled thus minimizing the distance which the pharmaceutical travels from the dispensing canister and the package cavity.

Abstract: A method and apparatus are disclosed for filling specially-designed beverage containers from the bottom through a one-way port. One embodiment of the invention employs an umbrella valve (19) mounted in a perforated stopper (18), which is interference-fitted into the bottom of a beverage container (11). When brought into contact with concentric o-ring seals (12,17) on a fluid delivery assembly (13), vacuum suction (14, 16) fixtures the beverage container (11) down to the fluid delivery assembly (13), creating a liquid-tight channel for fluids to be fed through. Fluids originate in a pressurized reservoir and are fed through a fluid feed-in (15), forcing the umbrella valve (19) open and allowing flow of fluid into the interior volume (20) of the beverage container. Upon completion of filling, the reservoir is depressurized, allowing the umbrella valve (19) to snap shut. The beverage container (11) can now be decoupled from the fluid delivery assembly (13) and employed as desired.

Abstract: A filling adapter for conveying liquid from a first liquid container to a second liquid container is provided. The filling adapter includes an adapter body having a top end and an opposite button end, the top end adapted for fitting an opening in the first liquid container, the bottom end adapted for fitting an opening in the second liquid container, and an open path in the adapter body from the top end to the bottom end for communicating liquid from the opening in the first liquid container to the opening in the second liquid container.

Abstract: A service station, in particular a hydrogen service station for filling a motor vehicle with a gaseous and/or a liquid medium, in particular with gaseous or liquid hydrogen, is disclosed. The station includes a) a reservoir for storing a liquid medium, b) a liquid medium dispensing unit which is supplied with the liquid medium from the reservoir, c) a compressor, an evaporator, a heating system, and an intermediate reservoir for intermediate storage of a compressed gaseous medium, d) a gaseous medium dispensing unit mounted downstream of the intermediate reservoir, e) a fuel cell which is supplied by the gaseous medium coming from the reservoir and/or the intermediate reservoir and supplies power to the compressor, and f) a control unit which is powered by the fuel cell and used for controlling the compressor, the gaseous medium dispensing unit and/or the liquid medium dispensing unit.

Abstract: A method for filling a reservoir on board a motor vehicle by a reserve cartridge. The reservoir includes a filler pipe, including a device for sealed attachment of the cartridge to the pipe. The cartridge includes a latching device configured to allow the fluid to flow from the reserve cartridge into the reservoir filler pipe only when the cartridge is attached in a sealed manner to the device on the pipe. The reserve cartridge is attached in a sealed manner to the pipe attachment device and the reserve cartridge latching device is unlatched so that the fluid can flow from the reserve cartridge into the filler pipe.

Abstract: On a continuous machine for filling capsules with at least one pharmaceutical product, the top shell of a capsule is transferred by advancing the top shell inside a relative seat, which is normally connected to a suction device to retain the top shell as of a loading station, and is connected to a blow device to release the top shell at an unloading station; pneumatic connection of the seat to the suction device being cut off upstream from the loading station in a travelling direction of the seat, so as to pick up the top shell directly at the loading station.

Abstract: The present invention is directed to a system for storing and dispensing a substance and a method for air free filling of the same. The system comprises at least one compartment for storing a predetermined amount of a substance, wherein said compartment has a back end and a front end for filling and dispensing the substance, respectively. The system further comprises a vent, a movable front plug and a displaceable piston for sealing the compartment at the back end, wherein the compartment defines a predetermined volume between the vent and the movable front plug within the compartment downstream of said piston.

Abstract: A method and an apparatus for exact metering and volumetric filling of dry powder medicament doses into preformed containers, which are adapted for administration by a dry powder inhaler. The filling apparatus includes at least a bulk powder source, a feeding chamber, and a receptacle providing the volume for a specified load mass of dry powder. The bulk powder source releases a portion of powder discontinuously to the feeding chamber, but is disconnected from the feeding chamber and receptacle during the filling operation. The filling apparatus further presents a plane surface in contact with the movable feeding chamber and provides a hard-wearing, low friction coating for reducing dynamic friction and powder retention.

Abstract: According to a first aspect of the invention a can manufacturer completes manufacture of a can and then ships it to a filler, who needs only to fill the can with product. In a preferred embodiment the manufacturer pre-charges the container with a propellant. In accordance with a second aspect of the invention a desired quantity of gaseous propellant is first charged into a container, and a desired quantity of product is then injected into the container. A container filled in accordance with the invention maintains a predetermined pressure in the container as product is depleted from the container, and unacceptable pressure spikes are avoided as the container is being filled.

Abstract: The present invention provides spreader covers and methods of using the spreader covers. Specifically, the present invention provides spreader covers that are generally rigid that are configured for enclosing the hopper of a spreader device (e.g., to protect from rain and/or spillage). In certain embodiments, the generally rigid spreader covers enclosing the top of a hopper may be slid back, along the hopper opening ridge, to allow material to be added to the hopper without removing the spreader cover.

Abstract: A medicament tablet dispensing system and method dispenses any selected number of tablets, up to a maximum number, with minimal dispensing delays. During fill operations, a preset number of tablets are counted and stored in dedicated storage compartments. Dispensing operations are performed in response to dispense request commands. The fill operations are performed in a manner independent from the quantity of tablets identified by the dispense request commands. During the dispensing operations for a particular dispense request command, the preset number of tablets are emptied from one or more of the dedicated storage compartments, thereby avoiding delays associated with counting all of the dispensed tablets. Moreover, the fill operations and the dispensing operations may be performed in parallel for high-throughput dispensing applications.

Abstract: An applicator for introducing an air conditioning system treatment into an air conditioning system refrigerant flow path. The applicator comprises a reservoir carrying the treatment, the reservoir having first and second caps closing first and second reservoir openings, each of the first and second caps including a hose fitting. First and second hoses are connected between respective first and second valves in the refrigerant flow path and the respective first and the second fittings. A pressure differential between the first and the second valves (a higher pressure at the first valve than at the second valve) forces the treatment from the reservoir through the second hose into the second valve in the refrigerant flow path.

Abstract: A filling method for filling a reservoir (10) of variable working volume with a fluid, the method being characterized in that the reservoir (10) is firstly emptied of any content, such that its working volume is substantially zero, and the fluid is then injected into the reservoir, thereby increasing the working volume of the reservoir (10).

Abstract: Provided is a novel system and apparatus for producing primary standard gas mixtures. The system includes providing a gas permeation device having a constant diffusion rate into a temperature controlled enclosure; connecting a supply source of a component to the permeation device; routing the component from the gas permeation device to a product container until a desired amount of said component in the product container is reached; and supplying a balance of purified gas to the product container to obtain a known concentration of component in the primary standard gas mixture.

Abstract: A discrete object dispensing system and method dispenses any selected number of objects, up to a maximum number, without a substantial delay associated with counting all of the tablets. A preset number of objects are counted and stored in dedicated primary chambers. Furthermore, an overflow chamber is provided for temporarily storing and then dispensing tablets which are fed to the primary chamber after the primary chambers are filled with their respective number of tablets. In addition, a direct feed channel is provided for dispensing individually counted tablets. The chambers and direct feed channel can together dispense the selected number. It is also preferable that the chambers have subchambers, and that more than one subchamber be capable of being emptied during a single dispensing operation.

Abstract: A container including a nozzle and body depending therefrom. The body is preferably tubular and defines an interior which retains a product to be dispensed. A cap engages the nozzle to prevent inadvertent release of the product. In order to dispense the product, the cap is removed and pressure is applied to the body and the nozzle allows release of the product. The nozzle releases the product without exposing the remaining product to the external atmosphere, thus the sterility of the interior of the body is maintained and the shelf life of the product is increased. The nozzle includes an inner body, coupled to the tubular body, surrounded by a flexible outer cover. A seam between the inner body and flexible outer cover forms a one-way release valve wherein a portion of the seam remains closed during dispensing the product.

Abstract: A spray gun (1) has a fluid reservoir (11) with a removable liner (13) received in a container (12) having a detachable lid (15). The liner (13), which may be thermo/vacuum-formed from a planar material, has a shape that corresponds to and is a close fit within the interior of the container (12) and collapses as fluid is withdrawn from within the liner (13) during operation of the spray gun (1). The lid (15) has an outlet (16) connected to an inlet on the spray gun (1) for transfer of liquid from the reservoir (11) to the spray gun (1) and the container (12) has a vent (12A) in the base end for admitting air between the container (12) and the liner (13) as liquid is withdrawn from within the liner (13).

Abstract: A lid with a detachable sealing joint, the lid having a crown-type shell having an inner surface and an external surface, a sealing joint upon the inner surface of the shell; a detachable hydrophilic coating; and a coating compatible with the sealing joint upon the detachable hydrophilic coating; such that the detachable hydrophilic coating and the compatible coating form an adhesive interface between the crown and the sealing joint. The detachable hydrophilic coating having at least a water solid polymer, for example polyvinyl pyrrolidone; at least a cross-linking agent, for example, butanediol; and at least a solvent, for example, water. It also describes a method for manufacturing a lid with a detachable sealing joint and a method for bottling beverages using lids with a detachable sealing joint of the invention.

Abstract: Apparatus for introducing a medicament into containers, especially vials, in which the containers are passed through an enclosure and exposed therein to a sterilising electron beam. The containers are then conveyed to a filling station situated outside the enclosure at which a wall part of the container is punctured with a filling needle and medicament introduced into the container via the needle then withdrawing the needle. Preferred apparatus also includes means for heat sealing the puncture site. A corresponding process is disclosed.

Abstract: Electrochemical systems and methods of operating the systems are disclosed herein. In one embodiment, a method for operating an electrochemical system, comprises: forming hydrogen gas in an electrolysis cell, maintaining the hydrogen gas at a temperature sufficient to enable the filling of a hydrogen gas vessel at a rate that would fill a 5 kg vessel with the hydrogen gas in a period of time of less than or equal to about 10 minutes, and introducing the hydrogen gas to the hydrogen gas vessel.

Abstract: A point of sale system for custom preparation of a personal care product includes a dispensing container, a plurality of personal care product ingredients and mechanisms for introducing determined amounts of selected personal care product ingredients into the dispensing container; and a non-adulterating multi-axis centrifugal mixing apparatus, adapted to mix lotion ingredients within the container, without the mixing apparatus contacting the lotion within the container. An identifying label is be provided for the dispensing container. A method for custom formulation, non-adulterating mixing and packaging of a personal care product at a point of sale location entails introducing selected lotion ingredients into a selected container; centrifugally mixing the ingredients in the container without physically contacting the ingredients; closing the container; and applying a label. The method may be implemented at a point of sale or in response to online orders.

Abstract: An inflation stem having an inflation valve combined with a blow-off valve to prevent overinflation. The valves are forced open during inflation when the actuating pin is depressed by the compressor chuck head, opening a fill chamber through which fluid flows into an inflatable object, and also opening a blow-off chamber. A blow-off intake allows lower pressure fluid from the interior of the object to enter the blow-off chamber. The fluid entering the blow-off chamber is isolated from the high pressure fluid coming in from the compressor through the fill chamber by a separation fin and shield joined to the bottom end of the actuating pin. A blow-off gasket is biased upward by a blow-off spring. But as pressure in the object and the blow-off chamber increases, the blow-off gasket is forced down, until at the predetermined pressure it is pushed past a blow-off port, through which fluid then escapes.

Abstract: A system for reclaiming residual unspent automotive fluid having a fluid receiver which seats open containers of the automotive fluid in an inverted orientation to allow influences of gravity to self-drain the open containers. The fluid receiver accumulates the residual unspent automotive fluid into classifying compartments. Each compartment can be individually pumped or drained of the accumulated and stored residual automotive fluid.

Abstract: An automated system is provided and includes a safety and cost reducing feature that is capable of detecting whether an underfill condition exists within the product container as a unit dose of medication is delivered thereto. More specifically, the medication is typically injected into the product container under action of a delivery device, such as a pump, and the underfill detection device is capable of calculating if air (air bubbles) has been dispensed into the product container and based on this information, the device is able to measure the amount of the unit dose of medication within the product container and if necessary, additional medication can be added if it is determined that an underfill condition exists in order to compensate for the presence of the air bubbles.

Abstract: The present invention relates to inkjet cartridges, and more specifically, to a machine and process for use in refilling such inkjet cartridges.

Abstract: The present invention is directed to a syringe filling station that can fill a syringe with a specified volume of fluid. In one embodiment, the syringe filling station comprises a reservoir attachment, a fluid delivery system, a syringe retaining guide, and a pump to move fluid from a reservoir to a syringe. The fluid delivery system may comprise a sterile consumable cartridge that is insertable into the filling station and defines a fluid pathway from a reservoir to a syringe. The syringe filling station may also include a user interface. An operator can input commands into the user interface to specify the amount of fluid to dispense into the syringe. The user interface may be connected to a processor that controls the rate of pumping and thereby can fill a syringe with a desired amount of fluid. The filling station may also include sensors that detect air in the tubing, depletion of the reservoir, among other things.

Abstract: An apparatus and method for storing gases and liquids having a high trans-migration rate through containment surfaces due to their molecular size. An inner pressurized retaining enclosure for the storage of gas and liquids has a second enclosure wall about the first enclosure defining a gap between the respective enclosure surfaces which is filled with a containment gas or liquid having a molecular size greater than the porosity of the storage wall and stored gas or liquid. The containment gas effectively impedes the transmission of the storage gas and liquid through the first inner pressure retainer enclosure by creating a pressure barrier on its outer surface.

Abstract: A watering can includes a pump and a snorkel which can be used to draw water out of a vessel and into the watering can. The snorkel device is put into a vessel from which water is to be evacuated and the pump is cranked in order to start the flow of water from the vessel and into the reservoir of the watering can. In some embodiments, the pump is a peristaltic pump which includes a mode where the pump is fully disengaged and fluid may flow freely from the snorkel, through the pump, and into the reservoir of the watering can. This allows the operator to use the pump to start a siphoning process which evacuates the remainder of the water from the vessel without further pumping. When not being used to draw water out of a vessel, the watering can may be used in the ordinary manner.

Abstract: The invention discloses a method and a tool for exact metering and volumetric filling of finely divided dry powder medicament doses into preformed containers, whereby the doses and containers are adapted for administration by inhalation using a dry powder inhaler (DPI). A filling tool illustrating the invention includes at least one receptacle (10). The shape and size of a receptacle may vary depending on the size and mass of the powder load to be metered. A stretched woven filter (106) is positioned between the second opening of the receptacle (10) and a suction nozzle (13), using flexible seals at joints to stop air and powder leakage. The shape may be circular or elliptical, the wideness and depth, i.e. the volume, is adapted to the intended load and the method of filling and unloading.

Abstract: An anesthetic tank (1) of an anesthetic dispensing unit is used especially for desflurane and has improved reliability of operation by mutually complementing level monitoring devices. The anesthetic tank (1) is equipped with a level tube (3) arranged in or on the outer wall with a connection line (6) into the interior space as well as with an optical level sensor (4). The optical axis (5) of the level sensor (4) is located at the same level as a mark (33) on the level tube (3).

Abstract: A bottle neck liner, the liner comprising a sleeve terminating in an inward step, the inward step preventing the barrel of a syringe from protruding past the step when the syringe is inserted into the sleeve. Once the syringe is inserted the bottle may be inverted and liquid may be drawn into the syringe. Additionally, bottles, liquid dispensing apparatus and methods of dispensing liquids, all involving the provision of such a step in the bottle neck.

Abstract: A powder-fluidizing apparatus is presented which is applicable to feeding ultra-fine and nano-size powders, and powders with a broad particle size distribution, in a uniform manner over a long period of time. Generally, this is accomplished by using a rotating brush to sweep the powder through holes in a removable sieve plate, which breaks up agglomerated particles in the powder and controls the powder feed rate. The powder then drops from the holes into a funnel, where it is fluidized by being entrained into a carrier gas, and then flows through the funnel out of the apparatus to an applicator. The funnel surface is vibrated to avoid powder build-up on the surface that can break loose and cause pulses of increased material in the powder flow. Ultrasonic waves are introduced into the funnel to break up any agglomerated particles remaining in the powder before it reaches the applicator.

Abstract: A valve for closing a container and for enabling the container to be filled has a housing (20) with an inlet port (30) and an outlet port (40). A closing member (60) is provided for sealingly closing the valve at the inlet port (30). At least one valve member (70) is provided for controlling fluid communication between the inlet port (30) and the outlet port (40). The valve member only allows fluid communication when it is in a first position. The valve member (70) is designed in such a way that it is brought into and maintained in said first position only if a predetermined filling condition is achieved. The filling condition is typically achieved, when the filling pressure of a system for filling the container (50) is initially below a first predetermined or predeterminable threshold value.

Abstract: A method for supplying a cryogenic fluid to a network of two or more cryogenic fluid receiving stations, wherein a cryogenic liquid is routed to cryogenic fluid receiving stations in a single cryogenic vessel and is dispensed to the cryogenic fluid receiving stations as either a cryogenic liquid, a compressed gas, both a cryogenic liquid and a compressed gas, or as a mixture of a cryogenic liquid and a compressed gas.

Abstract: Device for filling dry toner powder from a bag into a toner container, said device comprising a piping system with a flexible and compressible pipe and a peristaltic pump acting on said flexible and compressible pipe.

Abstract: A device and method are provided for needle penetrating and filling a chamber with a predetermined substance, and laser resealing a resulting needle hole in the device. A needle penetrable and laser resealable portion of the device is pierceable with a needle to form a needle aperture therethrough to fill the chamber through the needle, and is laser resealable to hermetically seal the needle aperture by applying laser radiation at a predetermined wavelength and power thereto. The needle penetrable and laser resealable portion defines a predetermined wall thickness in an axial direction thereof, and includes a thermoplastic that substantially prevents the formation of particles released into the chamber from the needle penetrable and laser resealable portion during penetration by and withdrawal of the needle.

Abstract: A piston for a pressurized container (i.e., “aerosol can”), the piston including a body having circumferential fins, with the fins being of uniform thickness, decreasing thickness radially away from the body, or varying thickness circumferentially. Further disclosed are container precursors and containers incorporating such a piston, and methods of filling and dispensing from such containers.