Abstract: A motor vehicle has at least one pressure vessel for storing storage medium, preferably fuel, at least one pressure relief device for pressure relief of the at least one pressure vessel, and at least one opening through which storage medium flows out during a pressure relief.

Abstract: A fluid tank that includes a housing. The housing includes a bottom wall, a top wall, and a side wall. The side wall couples the bottom wall to the top wall to define a cavity that receives and houses a liquid. A conduit guides liquid from a fluid source into the cavity. The conduit defines an inlet and an outlet. The outlet couples to the side wall. A vent coupled to the housing and to the conduit. The vent defines a vent inlet coupled to the housing and a vent outlet coupled to the conduit. The vent discharges gas from the housing into the conduit.

Abstract: Disclosed herein is a cooking system for cooking food, the system including a housing defining a hollow chamber configured to receive a food container. The housing has an upper portion defining an opening to the hollow chamber. A lid is attachable about the upper portion of the housing and is configured to extend across the opening to the hollow chamber. At least one heating element is associated with at least one of said housing and said lid. The cooking system is operable in a plurality of modes including a pressure cooking mode and a dry cooking mode. In the pressure cooking mode, the cooking system is operable as a pressure cooker and in the dry cooking mode, the cooking system is operable as a dry cooker.

Abstract: Disclosed herein is a cooking system for cooking food, the system including a housing defining a hollow chamber configured to receive a food container. The housing has an upper portion defining an opening to the hollow chamber. A lid is attachable about the upper portion of the housing and is configured to extend across the opening to the hollow chamber. At least one heating element is associated with at least one of said housing and said lid. The cooking system is operable in a plurality of modes including a pressure cooking mode and a dry cooking mode. In the pressure cooking mode, the cooking system is operable as a pressure cooker and in the dry cooking mode, the cooking system is operable as a dry cooker.

Abstract: Disclosed herein is a cooking system for cooking food, the system including a housing defining a hollow chamber configured to receive a food container. The housing has an upper portion defining an opening to the hollow chamber. A lid is attachable about the upper portion of the housing and is configured to extend across the opening to the hollow chamber. At least one heating element is associated with at least one of said housing and said lid. The cooking system is operable in a plurality of modes including a pressure cooking mode and a dry cooking mode. In the pressure cooking mode, the cooking system is operable as a pressure cooker and in the dry cooking mode, the cooking system is operable as a dry cooker.

Abstract: A collector includes a container body defining an interior containment space and having an open end for access, and a cap in covering relation to the open end and having an opening for receiving therein a distal end of a kerrison-type rongeur. An improvement includes the cap including a first plurality of scrapers in the form of fingers for engaging and dislodging cut bone from the cutting area of the distal end of the rongeur and a second plurality of scrapers in the form of wipers for engaging and dislodging cut bone from the cutting area of the distal end of the rongeur when the distal end of the rongeur is withdrawn through the opening from the collector, the second plurality being arranged so as to permit insertion of the distal end of the rongeur through the opening into the collector without engaging the distal end of the rongeur.

Abstract: An insulating container having a base and a lid is provided. The lid may be rotatable about a hinge from a closed configuration to an open configuration and may be secured, via one or more latching devices, in either the closed configuration or the open configuration. In some examples, the rotatable lid may be non-destructively removable from the base. Some example arrangements include a removable lid that, when removed, may be secured to the base via an additional portion of the latching device. Additional features of the insulating container include handles that are integrally formed with the base, a recess formed in the base and housing a spigot, and/or a spigot guard.

Abstract: A fuel cap configured to be coupled with the opening of a fuel tank defining an interior for containing a volume of fuel. An inlet opening is configured to establish fluid communication with the fuel tank interior. An exit is in communication with a surrounding atmosphere, exterior to the fuel cap. A flow path is defined from the inlet opening to the exit. Adsorption media substantially fills the flow path and is configured to reduce the emission of VOC vapors through the exit to the surrounding atmosphere. The flow path extends spirally about an axis of the fuel cap from the inlet opening to the exit.

Abstract: A valve assembly for a fuel tank for a small engine includes a housing. A membrane is supported by the housing such that the membrane covers a housing opening. The membrane allows the passage of vapor through the membrane and into the housing cavity and prevents the passage of liquid through the membrane. A pressure relief valve is supported by the housing to control flow of a vapor through the housing cavity.

Abstract: A sealing case including a main body, a cover and a sealing member is disclosed. The main body has a first surface opened to a housing space therein. The cover is disposed over the first surface. The sealing member is interposed between the main body and the cover. The main body includes a first fastening portion protruding toward the sealing member. The cover includes a second fastening portion protruding toward the sealing member. The first and second fastening portions are spaced apart from each other. The main body and the cover are coupled together to be water-tight.

Abstract: A convertible storage container and methods are provided for the remediation of environmentally damaged articles. The container defines an interior chamber for receiving the environmentally damaged articles therein, the container having at least one container door for closing an access opening into the container. A conversion door is removably positionable with respect to the access opening so as to close the access opening with the container door in an opened condition. The conversion door includes a conversion door panel and a plurality of access ports through the door panel for connection of ducts to permit remediation of the environmentally damaged articles within the interior chamber.

Abstract: A closure device for a fluid vessel can comprise a bistable valve arrangement which includes first and second valve rim portions and a valve member engageable with either of the rim portions respectively to define an open position in which fluid can exit the vessel and a closed position in which fluid is substantially prevented from exiting the vessel The valve can be arranged to close automatically when an impulse is exerted against the valve member. This can occur for example when the vessel is knocked over and the fluid therein exerts pressure against the valve member.

Abstract: A non-penetrative vacuum blood container for storing blood sample, the non-penetrative vacuum blood container comprises: (a) a cap (1) having a number of air passages (4) at its inner wall and ridges (5) at is outer wall; (b) an enclosure (2) which includes enclosure head (8), enclosure neck (9) and enclosure chamfer (10); and (c) a tube (3) for storing blood sample; wherein the air passages (4) further includes enclosure stopper (7) close to opening (6) of the cap (1); and wherein an enclosure opening (11) is provided at the enclosure head (8).

Abstract: A storage container assembly comprises, a storage receptacle, a removable lid, and a seal. The storage receptacle has a base and a continuous sidewall connected to the base. The sidewall has an interior surface and an exterior surface. The lid has a main body that covers at least a portion of the storage receptacle. The lid has a first and a second receiving channel. The seal has a securing member and a blade portion. The securing member goes into the first receiving channel of the lid to connect the seal to the lid. The blade portion of the seal contacts the interior surface of the sidewall. The exterior surface of the sidewall contacts the second receiving channel. The sidewall of the storage receptacle is within the second receiving channel. The blade portion forms a generally fluid tight seal with the sidewall while the sidewall contacts the second receiving channel.

Abstract: An airtight container includes a cover, a container and two airtight members. The cover is assembled with the container. The cover has an exhaust part and a releasing part defined therein. The two airtight members are mounted in the exhaust part and the releasing part of the cover respectively. Each airtight member having an inlet and an air gap defined at two ends thereof respectively. The air gap communicates with the inlet. The inlet of one airtight member opened toward an inside of the container and the air gap opened toward an outside of the container, the inlet of another airtight member opened toward the outside of the container and the air gap opened toward the inside of the container. Therefore, the container could be sealed or unsealed by pressing the cover to the container or detaching the cover from the container.

Abstract: A bottle assembly is provided having a body portion defining a cavity therein, a top lid assembly connectable to the body portion, which includes a selectively deployable and retractable spout, a spout bottom lid; and a resilient tube having a lumen therethrough, wherein the lumen is occluded when the spout is retracted and the resilient tube is kinked, and wherein the lumen is opened when the spout is deployed and the resilient tube is not kinked; a trigger assembly for selectively moving the spout between a deployed and a retracted condition; and a bottom lid assembly selectively connectable to a bottom end of the body portion, the bottom lid assembly including a valve assembly to open and close a fluid path into the cavity of the body portion.

Abstract: A one-way valve is disclosed, particularly for foodstuff packages, the valve designed to be mounted on a package and arranged to open in response to an excess pressure inside said package. The valve includes an aperture formed in the package material. On top of the aperture an adhesive layer is arranged. The adhesive layer is arranged in such a manner that the valve, upon opening, exhibits a pre-defined channel allowing passage-through.

Abstract: A system for storing high level radioactive waste. In one embodiment, the invention can be a system comprising an overpack body extending along a vertical axis and having a cavity for storing high level radioactive waste, the cavity having an open top end and a floor; an overpack lid positioned atop the overpack body to enclose the open top end of the cavity; an air inlet vent for introducing cool air into the cavity, the air inlet vent comprising an annular air inlet plenum and an annular air inlet passageway, the annular air inlet plenum extending radially inward from an outer surface of the overpack body to the annular air inlet passageway, the annular air inlet passageway extending upward from the annular air inlet plenum to an opening in the floor, and an air outlet vent in the overpack lid for removing warmed air from the cavity.

Abstract: A self-piercing closure for a container includes a laminar closing member, a closure body, and a piercing member for piercing a closing member. After piercing of the closing member, a self-closing valve of the closure dispenses flowable media from the container. In some examples, the piercing member is formed separately from the closure body, and is attachable to the closure body. The closure body may include a deformable region, and deformation of the deformable region may allow the closure body to move from a first position to a second position. Movement of the closure body from the first position to the second position may activate the piercing means.

Abstract: A container (22) includes an oxygen-sensitive beverage, for example a vitamin C-containing beverage. A closure (40) seals the mouth (28) of container (22). The closure includes an oxygen scavenging structure, for example a closure, which comprises a hydrogen generating means and a catalyst for catalysing a reaction between hydrogen and oxygen.

Abstract: A safety valve is provided for metallic ammunition cans having lids which form an environmental seals when closed, the safety valve automatically vents cook-off gases generated when ammunition or other energetic in the ammunition can reach elevated temperatures. The safety valve is deployed in a hole formed in a wall of the ammunition can. The safety valve employs a vent cover which is soldered by means of a eutectic material either directly to an outer surface of the ammunition can or to an insert extending through the hole in the wall of the ammunition can. The vent cover seals gases in the ammunition can until elevated temperatures cause eutectic solder to melt thus freeing a vent cover and releasing cook-off gases from inside of the ammunition can.

Abstract: A device housing, especially for accommodating an electronic unit or a mechatronic unit, has parts which are sealed against one another in assembled condition via an encircling, stationary seal. At least one pressure-relief device is integrated into the seal for admission of air into the housing. The seal is formed at least in part as a lip that opens under overpressure conditions inside the housing. To allow any water that has penetrated to flow away, the housing is mounted vertically, with the pressure-relief device disposed at the bottom.

Abstract: A beverage container closure or lid that is adapted for closing an open end of a beverage container. The lid is selectively couplable to the beverage container and includes a selectively openable stopper that when closed, creates a fluid-tight seal between the beverage container and the environment. The stopper may be selectively opened by a user by the user pressing a button disposed on a side of the beverage container closure. The stopper is subsequently automatically closed when the user releases the button. Thus, a user may open and close the beverage container closure using a single hand without the need to remove the beverage container closure from the beverage container.

Abstract: A foil made of two plastic films and an adhesive layer laminating the two films together, wherein the first plastic film has a first side and a second side and comprises punctures therebetween. The foil is of a dual peel-seal type such that the first plastic film realizes a first peel-able seal within the foil at its first side in the form of an adhesion peel seal in an open state and/or in the form of a cohesion peel seal in a sealed state, and wherein the adhesive layer leaves open the punctures such that gas can penetrate through the punctures in-between the two films towards the first peel-able seal.

Abstract: The presently disclosed device provides a method and means for ensuring that containers of all types and sizes are vented or purged to atmospheric or environmental conditions upon the interior or exterior of the container reaching a critical temperature pressure, or humidity. Specifically, the presently disclosed invention integrates shape memory polymer (SMP) based, thermally activated fasteners into the venting systems. The result is a venting system that increases munitions safety without compromising the venting effectiveness, structural integrity, or the required bullet/fragment impact resistance requirements of the system.

Abstract: A training cup for children includes a cup body. A flow cap having an annular flow gap is selectively mounted to the cup body. A control ring is mounted to the flow cap for relative longitudinal movement toward and away from the cup body. The control ring includes an annular plug. In a first position the plug will block the flow gap to prevent flow from the training cup. In a second position the plug is spaced from the flow gap to allow restricted flow from the training cup. An infinite variation of positions and flow restriction are allowed between this first and second position. The control ring includes a drinking rim which has a minimum diameter of approximately 42 mm to force the child to engage the drinking rim with the lips and use it as a cup.

Abstract: The disclosed device primarily consists of a band, ring, or other piece of shape memory polymer (SMP) or SMP composite in various embodiments that allows or disallows containment. When the SMP reaches its transition temperature (Tg) the SMP provides the means for releasing containment of the pressurized material so as to prevent ignition or explosion of hazardous material. At normal operating temperatures, the SMP is in a deformed shape maintaining an environmental seal to protect the contents of the container. When environmental conditions cause the SMP or SMP composite to exceed its Tg, specified by the operating requirements, the SMP returns to its memory shape in a controlled geometry, rather than simply melting. The return of the SMP to its memory shape causes the venting of the container in different manners depending on which embodiment is utilized.

Abstract: In some embodiments, a substantially thermally sealed storage container includes an outer assembly and an evaporative cooling assembly integral to the container. In some embodiments, the outer assembly includes one or more sections of ultra efficient insulation material substantially defining at least one thermally-controlled storage region, and a single access conduit to the at least one thermally-controlled storage region. In some embodiments, the evaporative cooling assembly integral to the container includes: an evaporative cooling unit affixed to a surface of the at least one thermally-controlled storage region; a desiccant unit affixed to an external surface of the container; a vapor conduit, the vapor conduit including a first end and a second end, the first end attached to the evaporative cooling unit, the second end attached to the desiccant unit; and a vapor control unit attached to the vapor conduit.

Abstract: A fluid collection system includes a disposable collection container and a disposable collection container receiving housing, the housing having a cavity and a suction source. The fluid collection container may include a flexible liner and a shelf for diverting fluid from the suction and to assist with a collapse of the liner during evacuation of the fluid from the liner. The collection container receiving housing may include a piston assembly having a main piston body and a scraper ring. The collection container receiving housing may include a piston stop feature. The system may include a partially hydrophobic filter and a flat surface suction tool.

Abstract: The invention is a safety device (1) for fluid containers including at least two units (3) to be engaged with each other so as to define an inner volume adapted to receive said fluid under pressure, the safety device (1) comprising a closing system (4) defining a closed position in which said units (3) are combined together in a fluid-tight manner, and an open position in which they can be mutually moved, a vent member (5) suitable to enable the fluid under pressure (2) to come out of the container (2) or prevent the fluid from coming out, and at least one junction mechanism (14) adapted to operatively connect the vent member (5) to the closing system (4), and lock the closing system (4) to the closed position when the vent member (5) is in the closed position.

Abstract: A valve (10) is disclosed which is operable to automatically transition from a closed state to an open state in response to heat. The valve (10) includes: a cover (12) having at least one opening (12a) therein; at least one adhesive layer (32, 36) for sealing a perimeter of the cover (12) to a wall (22) of a food cooking package (20) on which the valve (10) is positioned; and, a deformable element (14) that shrinks in response to being exposed to heat, the deformable element (14) having a perimeter which is sealed by an adhesive when the valve (10) is in its closed state, wherein shrinking of the deformable element (14) pulls the perimeter of the deformable element (14) away from a site where it is sealed by the adhesive, thereby breaking the seal about the perimeter of the deformable element (14) and transitioning the valve (10) from its closed state to its open state.

Abstract: A refuse collection apparatus includes a body portion extending between upper and lower ends. The apparatus includes a refuse container having bottom and side walls extending upwardly from the bottom wall and defining an open top and an interior area. A lid is releasably coupled to an upper edge of the side wall and configured to cover the container open top, the chute lower end being fixedly attached to the lid. An exhaust fan is operatively mounted to the lid in communication with the container interior area and configured to withdraw air from the container interior area when actuated. An input station is coupled to the chute upper end and configured to interface with the building wall, the input station having an access door movable between open and closed configurations selectively allowing and preventing access to the chute body portion, respectively.

Abstract: The present invention provides a fuel cap adapted to close an inlet of a fuel tank. The fuel cap includes a body portion adapted to engage the inlet of the fuel tank. The body portion defines a central axis. The fuel cap also includes a valve coupled to the body portion. The valve selectively allows an airflow through the body portion. The fuel cap further includes a cap cover coupled to the body portion and movable along the central axis relative to the body portion.

Abstract: There is provided a vacuum valve used in a vacuum storage container, having a simplified configuration, being installable in the container, and improved in vacuum maintenance. The vacuum valve includes a base having a hole; a sealing film attached to a flexible film and covering the hole between the base and the flexible film; and the flexible film attached to an upper surface of the base and the sealing film using an adhesive layer, wherein the flexible film is movable to an open position, and when the flexible film is disposed in the open position, the sealing film attached to the flexible film causes the hole to be open and an air path is formed between the sealing film and the base such that air passes therethrough.

Abstract: An air venting arrangement for a liquid cooling system associated with an internal combustion engine has a shunt vessel, and a transfer conduit connecting a flange portion of the shunt vessel to the liquid cooling system, and configured to pass coolant between the shunt vessel and the liquid cooling system. A venting conduit is disposed in a bore of the flange portion, and positioned to vent entrained air in the transfer conduit, developed during a filling of the cooling system, to a portion of the shunt vessel, and reduce the time required in filling of the liquid cooling system. A compression limiter and fastener connected to the compression limiter maintains and positions a first and a second end of the venting conduit at predetermined locations to provide venting of the transfer conduit to the reservoir portion.

Abstract: A gas powered walk behind mower is configured to be stored in a vertical position or orientation without leaking contained engine fluids.

Abstract: A closure cover for tanks under internal pressure, with a cover body (6) which can be fixed in a tank neck by rotation, and with a cover (14) which is provided with a handle (15) and is operatively connected to the cover body (6), and with a pressure control valve (40). A coupling device (22-28) is arranged between the cover body (6) and the cover (14) and, during the positive pressure which prevails in the fuel tank during normal operation, releases the rotational connection between the cover body (6) and the cover (14) such that the fuel tank cannot be opened, and in that a pressure control valve (40) is provided which opens when the positive pressure prevailing during normal operation is exceeded.

Abstract: The disclosed device primarily consists of a band, ring, or other piece of shape memory polymer (SMP) or SMP composite in various embodiments that allows or disallows containment. When the SMP reaches its transition temperature (Tg) the SMP provides the means for releasing containment of the pressurized material so as to prevent ignition or explosion of hazardous material. At normal operating temperatures, the SMP is in a deformed shape maintaining an environmental seal to protect the contents of the container. When environmental conditions cause the SMP or SMP composite to exceed its Tg, specified by the operating requirements, the SMP returns to its memory shape in a controlled geometry, rather than simply melting. The return of the SMP to its memory shape causes the venting of the container in different manners depending on which embodiment is utilized.

Abstract: Fluid packaging container of substantially rigid, or semi rigid construction. The container being configured to be operatively connectable to a beverage dispensing station. The fluid packaging container defines an interior space and contains a first volume of a liquid ingredient and a second volume of gas. In use the first and second volumes are each variable between a volume of substantially zero and a volume corresponding substantially to the interior space and being complementary to one another. Thereby the first and second volume together fill the interior space. The fluid packaging container in particular includes a fluid outlet arranged to communicate with the beverage dispensing station and pressure equalizing means for maintaining a predefined pressure in the second volume, irrespective of liquid withdrawn from the interior space.

Abstract: A venting device that may be used directly with a container or via a vent cap for a container, includes a venting mechanism having one or more collapsible dome structures and an absorbent material to prevent leakage of liquid or flowable contents from within the container. The construction relies on a combination of venting domed structures and expandable absorbent material to seal one or more openings in a container and or cap.

Abstract: Provided are a packaging container for a microwave oven that excels in the sealing performance between a container body and lid, and that at heating/cooking by a microwave oven, maintains the internal pressure of the container for a given period of time to thereby enhance the taste of contents through steaming effect, and that thereafter, can spontaneously open with certainty from a steam releasing seal part; and an efficient process for manufacturing the packaging container. In the packaging container for microwave oven having a lid heat-sealed to the periphery of a flange part of container body made of a synthetic resin so as to attain hermetic sealing, at least one steam releasing seal part with a weakened part is disposed inside the peripheral seal part of the flange part at a position separate from the peripheral seal part.

Abstract: A method, fuel system, and components for facilitating the delivery of liquid fuel from a fuel tank in fluid communication with a float bowl carburetor of an internal combustion engine, wherein evaporative emissions of the fuel from the fuel tank and float bowl carburetor are mitigated. During operation of the engine, fluid communication is permitted between the fuel tank and the carburetor, and fuel vapors at a predetermined threshold superatmospheric pressure are permitted to vent outwardly from the fuel tank. During inoperation of the engine, fluid communication is prevented between the fuel tank and the carburetor, and fuel vapors at a predetermined threshold superatmospheric pressure are permitted to vent outwardly from the fuel tank.

Abstract: A bottle cartridge fits in the neck of a bottle providing liquid flow and venting from the bottle interior when operably connected to a dispenser, and preventing spills or leakages upon any bottle upset. Dual seals are provided; a valve core is operated by connecting the cartridge to a dispenser coupling. Cartridge materials are disclosed.

Abstract: A closure device, such as a fuel cap, for controlling evaporative emissions from a fuel tank. In one aspect, the invention comprises: a housing defining an internal chamber containing a hydrocarbon adsorbing media; a fuel vapor diffuser extending from a floor of the internal chamber and into the internal chamber, the fuel vapor diffuser comprising: (1) an inlet passageway extending from a fuel vapor inlet port to a plenum in a top portion of the fuel vapor diffuser; and (2) a downcomer passageway extending from the plenum to at least one aperture located at a bottom portion of the fuel vapor diffuser, the at least one aperture forming a passageway between the downcomer passageway and the internal chamber; and at least one outlet passageway extending from the internal chamber to an atmospheric air outlet port.

Abstract: An overfill prevention device is provided for preventing overflow of a fluid storage tank. The overfill prevention device includes a filler cup designed to fit within the fill opening of the tank body and attach thereto. A seal that is adapted for receiving and sealing to a fill nozzle is placed between upper and lower regions of the filler cup. A breather piece, which defines a vapor path with first and second openings, is integrated with the filler cup. The first opening of the breather piece is fluidly coupled to the lower cup region, whereas the second opening is positioned above the first opening, located at or below the full level of the storage tank.

Abstract: A gas supply module is described for supplying a combustion chamber of an internal combustion engine with gas, in particular with air, including a gas supply element for supplying gas to the combustion chamber and a closure element which is situated in the gas supply element on the outlet side, the gas supply element being closable in a gas-tight manner on its outlet side with the aid of closure element.

Abstract: A liquid additive reservoir including a rigid casing delimiting a housing, and a fluid-tight flexible pouch mounted inside the housing of the casing and intended to contain the liquid additive, the flexible pouch being designed to be connected to the exhaust line of an internal combustion engine of a vehicle.

Abstract: An air inlet is mounted in a baby bottle and has a valve and an air-inlet tube. The valve has a body, an outer ring and an inner ring. The body has a chamber, multiple separating blocks and multiple liquid channels. The separating blocks are formed on the body and each has a vent. The liquid channels are formed through the body between the separating blocks and communicate with the chamber. The outer ring is formed around the chamber to separate the chamber and the vents. The inner ring is formed on an inner end of the body around the vents and has multiple air inlets. The air-inlet tube is mounted detachably on the inner ring of the valve. Therefore, liquid flows through the liquid channels and the chamber, but air flows through the air inlets and the vents to the air-inlet tube to ensure smooth operation.

Abstract: Embodiments can provide tank valve assemblies and associated methods. According to one aspect, a valve assembly can be provided. The valve assembly may include a valve body defining a hollow bore extending therethrough. A plunger having at least one passageway formed longitudinally partially therethrough and a spring associated with the plunger may be provided. The plunger is slideably positioned within the hollow bore of the valve body and retained in a closed position by a force exerted by the at least one spring against the valve body. The valve assembly may include a valve body o-ring positioned within the hollow bore, wherein the valve body o-ring substantially contacts the surface of the plunger when the plunger slides within the hollow bore of the valve body.

Abstract: A pump providing oil suction and oil drain functions includes a barrel and a lid; a first passage is disposed on a bottom of the barrel; the lid contains a second passage, a third passage, and a fourth passage; a regulating member is disposed on the lid to connect the third passage through the second passage and to allow air to flow in sequence from an oil storage space, the third passage, the second passage, a pipe, the first passage, a ventilation pipe, and the fourth passage into the ambient air for producing suction in oil suction operation; and to connect the fourth passage through the third passage for the ambient air to flow in sequence through the second passage, the pipe, the first passage, the ventilation pipe, the fourth passage, and the third passage to enter into the oil storage space for producing pressure during the oil drain operation.