Abstract: A box cover for a portable airtight box, comprising an upper cover, a lower cover, a sliding plate, a reset spring, a pinching member, a lower cover plate, and a sealing ring, wherein the upper cover is fixedly connected to the lower cover, an accommodating space is formed between the upper cover and the lower cover, and the sliding plate is movably arranged within the accommodating space, wherein the reset spring is disposed between the sliding plate and the lower cover, wherein the sliding plate is capable of moving upward relative to the lower cover, wherein the pinching member is movably arranged on the upper cover, and the pinching member abuts against the sliding plate, wherein the lower cover plate is movably arranged at outer bottom of the lower cover, and the lower cover plate is fixedly connected with the sliding plate.

Abstract: A method of fabricating a photonic structure on a surface of a solid substrate including a first material comprises depositing a deformable layer of the first material onto the surface of the solid substrate, embossing the deformable layer with a mold bear a photonic structure pattern and solidifying the deformable layer to be integral with the surface of the solid substrate with the mold in place to form permanent photonic structures in the solidified layer.

Abstract: The present disclosure provides a tank, in particular a plastic fuel tank, having a stiffening device, which penetrates the interior of the tank between opposite first and second wall parts of the tank and couples the wall parts to each other, whereby the tank can be subjected to increased interior pressure without damage. According to the present disclosure, the stiffening device comprises a first stiffening element, arranged on the first wall part, and a second stiffening element, arranged on the second wall part, wherein the first and second stiffening element have interacting coupling parts and wherein the first and second stiffening element can be connected to the first stiffening element with high tensile strength and, in the connected states, seals an opening in the second wall part by means of a flange cover.

Abstract: Provided is a water soluble film, and detergent packets comprising the film as an encasing material. The film contains a (meth)acrylic polymer that is a blend of a hard polymer and a soft polymer, and a plasticizer.

Abstract: The present invention discloses a security seal with a seal base with at least one locking projection and a seal head connected to the seal base with at least one blocking tab, whereby each blocking tab is movably connected to the seal head via at least one hinge element, together with a safety closure with a first closure part and a second closure part, which can be moved back and forth between an open position and a closed position relative to the first closure part, wherein the first closure part has a seating on which the seal base of a security seal can be engaged so that, when the second closure part is in the closed position, at least one blocking tab of the security seal at least partially overlaps the second closure part on the side of the second closure part opposite the first closure part, and additionally, a security container with a container tub, a lid and a safety closure, wherein either the first or second closure part is arranged on either the container tub or the lid, respectively.

Abstract: In a water drain plug (10) for a cavity (16) of a vehicle, in particular a side sill (14), comprising a base body (18) which can be fixed in an aperture (12) of the cavity (14) and has an opening (20) in which a sealing element (22) is arranged that is adapted to be moved between a closing position in which the opening (20) is tightly closed, and an opening position in which the opening (20) is open, the sealing element (22) is mounted in the base body (18) for pivoting movement about a retaining axis (36).

Abstract: A plug for heat-conducting tubes is equipped with: a plug main body, which is formed so as to be capable of being inserted into the heat-conducting tubes; a columnar member, which is capable of being inserted into and removed from the plug main body from the cylindrical open end of the plug main body, and has at its outer circumference a tapered surface; and a wedge member, which is formed so as to be capable of being inserted into and removed from the plug main body from the cylindrical open end of the plug main body, and has at its inner circumference a tapered surface which opposes the tapered surface of the columnar member when the wedge member is inserted into the plug main body.

Abstract: One embodiment of a cover for use in a fuel system component has a body and a seal molded around the body. The body has at least one first connecting feature that is complementary to at least one second connecting feature of the seal. The first connecting feature and the second connecting feature help hold the body and the seal together.

Abstract: A container for storing matter provides a container body having a resilient flange protruding outward therefrom to form a seal between the container body and a mating closure. The resilient flange is deflected by the inner surface of the mating closure to form a first releasable seal between the closure and the container body. The resilient flange includes an aspect ratio of length divided by thickness. A second releasable seal is formed in some embodiments between the upper edge of the side wall and the closure when the mating closure is positioned on the container body.

Abstract: A plastic pan and a plastic drain plug assembly is disclosed. The pan has upstanding walls, a bottom wall, an exterior surface and an interior surface. One of the walls has an opening extending through it. On the exterior, the opening has a circular raised collar with cutouts opposite each other and stop tabs located between the cutouts. On the interior, the opening has a circular raised non-threaded tubular wall. A portion of the non-threaded tubular wall has nibs projecting into the opening. The plug has a head portion, a body portion, an end portion. The head portion has an upstanding crown with downwardly extending tabs located opposite each other. The body portion has a circular groove, and a spiral groove. The end portion of the plug is tapered.

Abstract: A locking stopper component has lower, upper and central extents. The lower extent includes a stick. A frusto-conical cam shoulder is formed in a central extent of the stick. The upper extent includes a lock rotatable between locked and unlocked positions and an upper shaft. The central extent operatively coupling the upper and lower extents includes a reciprocating assembly and a rotatable assembly whereby rotating the lock rotates the rotatable assembly and raises the reciprocating assembly to secure the component in a tubular member.

Abstract: A container, particularly a beverage bottle, can be closed in a bottle opening of a bottle body with a closure made of a plastic material or glass. A fixing element is detachable fastened to the bottle body and holds the closure in the bottle opening. Such a bottle closure solves the problems involving, in particular, wine bottles and which arise when otherwise common bottle cork stoppers are used.

Abstract: A gravity-responsive system for securing or restraining the lid or lids of dumping containers in their on-the-ground position and releasing the lid or lids when the container is lifted to its overhead dump position includes a pivotally mounted over-center swingarm that is connected via a connecting link to a lid-restraining bail. When the dumping container is substantially in its on-the-ground position, the bail is rotated to a lid-securing or restraining position in which the lid or lids cannot be opened fully. As the dumping container is lifted toward and to is overhead dump position, the swing-arm rotates in response to gravity to move the bail toward and to a lid-release position to allow the lid or lids to swing away from their closed position to allow the dumping of the contents into the trash truck.

Abstract: A storage container including a housing having an open-top wall structure defining a receptacle for receiving material to be stored. The container includes a cover disposable on the housing in a closed position relative to the receptacle. A button is movably carried by the cover and a seal. The seal is carried by the cover and shiftable between a compressed condition for sealingly engaging the wall structure when the cover is disposed in the closed position, and an uncompressed condition for disengaging from the wall structure. The container also includes a toggle mechanism coupled to the button and to the seal for effecting movement of the seal to its compressed and uncompressed conditions respectively in response to alternate actuations of the button.

Abstract: A system for protecting the end fittings of a fluid transport hose includes first and second protective caps for respectively engaging with first and second end fittings of the hose. Both the first and second protective caps include a disk that is oriented perpendicular to the hose axis when the cap is engaged with the respective end fitting. Importantly, the disk has a diameter DD that is greater than the diameter DH of the hose so the disk will extend radially outward from the hose to thereby protect the end fitting.

Abstract: The present invention provides a sealing plug for blind installation in a suitable hole (50) thereby to plug and seal the hole, which sealing plug comprises a sleeve (2), a nut stem (4) having a shoulder (8), and a head (6) at least part of which is radially enlarged with respect to the remainder of the stem; the nut stem being of a material which is harder than that of the sleeve; the nut stem being internally threaded; whereby, when the sealing plug is inserted in a suitable hole, with the sleeve entirely within the hole, and increasing force is applied to the stem with respect to the sleeve, axial compression is applied by the shoulder to the sleeve material abutting it, thereby causing the sleeve to deform and expand radially outwardly to engage with the wall (52) of the hole.

Abstract: A rotary airtight container having a body, a lid that covers the opening of the body, a cover plate connected to the underside of the lid, a lifting mechanism for driving the cover plate to move with respect to the lid, a circumferential cone-shaped seal ring positioned all around the lid, and a tapered annular interface that on the bottom of the lid and engages the seal ring. As the lifting mechanism drives the cover plate to lift relative to the lid, the cone-shaped seal ring lifts relative to the lid and moves upwards along the tapered annular interface to seal the space between the tapered annular interface and the opening of the container, thus isolating the inside of the container from outside. This container changes the ordinary way of sealing that uses a locking nut for tightly pressing on the opening of the container, and is easier to operate.

Abstract: Disclosed herein is a preservation container having a container body and a lid assembly. The lid assembly includes an upper cover, a knob provided on a top of the upper cover and rotated by a user, a vertical moving unit coupled to the upper cover and moved up and down by a rotation of the knob, an intermediate cover detachably coupled to a bottom of the upper cover and having in a central portion thereof a hole through which the vertical moving unit is exposed to an outside, a lower cover coupled to the vertical moving unit, and a packing fitted into a groove which is formed in a top of the lower cover and sliding along a bottom of the intermediate cover to be in close contact with an inner surface of the container body, when the vertical moving unit moves up.

Abstract: A closure device includes a door carrying a series of interconnected shear blocks and a keystone shear block designed to transfer stresses created by pressure acting on the door to a surrounding hub. Each interconnected shear block has a limited rotation relative to its adjacent blocks. A holding band operating handle is in communication with a driving link which, in turn, is in communication with the keystone shear block. Actuating the handle causes the keystone shear block to move in an upward vertical direction. The linear movement of the keystone shear block allows the limited rotation of the interconnected shear blocks to occur, thereby causing the circumferential holding band to collapse within itself from an expanded-engaged position to a contracted-removed position relative to said hub. A pressure warning lock provides a safety device and prevents actuation of the holding band operating handle when the pressure chamber is under pressure.

Abstract: A vacuum sealing cap for a container includes an outer cap body, an inner cap body movable toward or away from the outer cap body, a sealing gasket compressible by the outer cap body to abut sealingly against the mouth of the container when the inner cap body moves toward the outer cap body, a slide member connected to the inner cap body, and an operating member connected pivotally to the slide member and pivotable between first and second positions, where the operating member pulls upwardly and pushes downwardly the slide member to move the inner cap body upwardly toward and downwardly away from the outer cap body. The sealing gasket is pressed and is not pressed sealingly against the mouth of the container in the first and second positions, respectively.

Abstract: A closing device for a vacuum user system or vacuum toilet system of an aircraft that makes it possible to quickly open and close a pipe connection piece in a vacuum user system or in a vacuum toilet system of an aircraft. The closing device comprises a cover; a closing element that can be inserted into the pipe connection piece and is connected to the cover by a spacer and is designed such that it substantially fully covers a cross section of the pipe connection piece; a sealing bellows located between the cover and the closing element and that at least partly encloses the spacer, wherein the sealing bellows comprises a sealing face; and an element that is movable in relation to the cover, which element is movable from a first position to a second position, wherein the movable element engages the sealing bellows such that the sealing face of the sealing bellows in the second position has a greater extension in a plane across the spacer than it does in the first position.

Abstract: An elongated two-piece expandable sealing plug (20) that is adapted to sealingly close a marginal end portion of a hole or opening (22) provided in a body (21) broadly comprises: a cup-shaped member (23) having an annular open upper end, having an outer surface that is adapted to face toward a wall on the body surrounding the opening, and having an inner surface (38) that diverges radially outwardly in a direction toward the member upper end; and a head having an outer rim portion (25) mounted on the upper end marginal end portion of the member for rotation therewith, and having a central portion (26) arranged within, and secured to, the rim portion; wherein the member is adapted to be inserted (i.e., slidably and/or rotatively) into a marginal end portion of the body opening (FIG.

Abstract: A pressure retaining closure assembly has a door hingedly mounted to a pipe, vessel, or hub extending therefrom with an arcuate locking ring movably retained proximate an outer perimeter surface thereof. The locking ring is suitable to contract out of a groove in an opening in the pipe, vessel, or hub extending therefrom into an unlocking position and is suitable to expand wherein an outer portion of the locking ring extends into the groove in the opening in the pipe, vessel, or hub extending therefrom into a locking orientation. A locking ring actuator is provided having cylinder with a piston therein. The piston has a rod extending axially therefrom with a portion extending beyond the cylinder. Optionally, a bracket is mounted to the portion of the piston rod extending beyond the cylinder and a bracket is mounted proximate the bottom of the cylinder.

Abstract: A storage container including a housing having an open-top wall structure defining a receptacle for receiving material to be stored. The container includes a cover disposable on the housing in a closed position relative to the receptacle. A button is movably carried by the cover and a seal. The seal is carried by the cover and shiftable between a compressed condition for sealingly engaging the wall structure when the cover is disposed in the closed position, and an uncompressed condition for disengaging from the wall structure. The container also includes a toggle mechanism coupled to the button and to the seal for effecting movement of the seal to its compressed and uncompressed conditions respectively in response to alternate actuations of the button.

Abstract: Disclosed is a two or three phase separator including a centrifugal separator, a demister (if a three phase separator), and a filter contained within a housing. The filter uses an outside-in flow principle. The filter includes an inner layer or a center core that defines a hollow interior. An outer layer is positioned adjacent and surrounding the inner layer. The outer layer includes a re-enforcement layer, a first particle filter layer, a coalescer layer, and a second particle filter layer. An access cover of the separator includes a cover plug, an actuator cam, a plurality of idler cam plates, and a plurality of mechanisms. The access cover cooperates with an opening and an annular groove in the housing to close off and seal the separator.

Abstract: An expansible bottle stopper includes a body, a resilient member, and a movable member that is longitudinally movable relative to the body. The resilient member is caused to expand radially by a first-stage longitudinal displacement of the movable member relative to the body or to shrink radially by a second-stage longitudinal displacement of the movable member relative to the body.

Abstract: A storage container including a housing having an open-top wall structure defining a receptacle for receiving material to be stored. The container includes a cover disposable on the housing in a closed position relative to the receptacle. A button is movably carried by the cover and a seal. The seal is carried by the cover and shiftable between a compressed condition for sealingly engaging the wall structure when the cover is disposed in the closed position, and an uncompressed condition for disengaging from the wall structure. The container also includes a toggle mechanism coupled to the button and to the seal for effecting movement of the seal to its compressed and uncompressed conditions respectively in response to alternate actuations of the button.

Abstract: The present invention provides a sealing plug for blind installation in a suitable hole (50) thereby to plug and seal the hole, which sealing plug comprises a sleeve (2), a nut stem (4) having a shoulder (8), and a head (6) at least part of which is radially enlarged with respect to the remainder of the stem; the nut stem being of a material which is harder than that of the sleeve; the nut stem being internally threaded; whereby, when the sealing plug is inserted in a suitable hole, with the sleeve entirely within the hole, and increasing force is applied to the stem with respect to the sleeve, axial compression is applied by the shoulder to the sleeve material abutting it, thereby causing the sleeve to deform and expand radially outwardly to engage with the wall (52) of the hole.

Abstract: A closure device includes a door carrying a series of interconnected shear blocks and a keystone shear block designed to transfer stresses created by pressure acting on the door to a surrounding hub. Each interconnected shear block has a limited rotation relative to its adjacent blocks. A holding band operating handle is in communication with a driving link which, in turn, is in communication with the keystone shear block. Actuating the handle causes the keystone shear block to move in an upward vertical direction. The linear movement of the keystone shear block allows the limited rotation of the interconnected shear blocks to occur, thereby causing the circumferential holding band to collapse within itself from an expanded-engaged position to a contracted-removed position relative to said hub. A pressure warning lock provides a safety device and prevents actuation of the holding band operating handle when the pressure chamber is under pressure.

Abstract: The present invention is a male and female safety cap to protect hose and liquid transport fittings and the hand of the operator. The male safety cap has a circular disk with a diameter larger than the female fitting and a loop handle. The female safety cap has raised parallel ridges to protect the cam arm and a loop handle. A T-handle cam is provided to improve handling. In one embodiment, the safety caps are covered in a resilient material to reduce shock. In another embodiment, the safety caps are molded from an electrical dissipative material to prevent static electricity buildup and discharge when removing the safety cap. The loop handle forms a continuous arcuate structure to provide protection to the operator's hand. The safety caps can be color coded or affixed with labels to prevent product cross contamination. Safety caps can be adapted to threaded couplings and fittings.

Abstract: A plug for sealing a bore in the wall of a high-pressure fluid container is provided. The plug includes a sloping surface adapted to seal at an edge between surfaces of different diameter. A method for sealing the bore by forming a socket in the wall that is adapted to receive the plug is provided. The socket may be formed by reaming a tapered hole to form a surface having a minimum diameter greater than the diameter of the bore and tapping a segment of the tapered hole. A ball may be forced into a cup of the plug to increase radial force between the plug and the socket.

Abstract: Methods and devices for preventing temperature and pressure extrusion failure in o-ring seal assemblies. One embodiment employs a bore in the plug so that the thin wall of the plug flexes outward at high pressures to partially fill the gap between the chamber member and the plug where the o-ring is located, thereby preventing the o-ring from extruding through the narrowed gap. A second embodiment utilizes a plug of a higher coefficient of thermal expansion than the chamber member that expands outward slightly at high temperatures, thus partially filling the gap. A third embodiment secures the o-ring in the gap between a backup ring and a retaining ring, and the backup ring has a higher coefficient of thermal expansion than the plug and chamber member. At high temperatures the backup ring expands to partially fill the gap. Additional embodiments are created by combining these three embodiments.

Abstract: A closure plug for bores, including a cylindrical jacket of through hardened steel, whose outer peripheral surface features a toothed design.

Abstract: A unit for fastening on a neck of a receptacle containing a fluid, said unit comprising: a fastener ring (1) that is suitable for fastening a dispenser member (3), such as a pump or a valve, on the neck of the receptacle; and a gasket (2) for interposing between the fastener ring (1) and said neck of the receptacle; said gasket (2) being pre-mounted in clamping engagement in the fastener ring (1), in such a manner as to hold said gasket (2) in its stressed state in said ring (1), both before and after fastening said unit on said neck of the receptacle.

Abstract: A closure assembly 10 contains positive and/or vacuum pressure within a pressure vessel 16 having a neck 12. A circumferential locking member 22 supported on a door 20 locks the door to the neck, and is radially moveable between an open position and a closed position. A seal 26 between the neck and the door maintains fluid-tight integrity. A lever or other hand powered operator may be used for moving the locking member between the open position and the closed position. The locking member may include locking segments interconnected to form the circumferential locking member.

Abstract: A closure assembly 10 contains positive and/or vacuum pressure within a pressure vessel 16 having a neck 12. A circumferential locking member 22 supported on a door 20 locks the door to the neck, and is radially moveable between an open position and a closed position. A seal 26 between the neck and the door maintains fluid-tight integrity. A lever or other hand powered operator may be used for moving the locking member between the open position and the closed position. The locking member may include locking segments interconnected to form the circumferential locking member.

Abstract: A tube plug kit including a tube plug having a housing member and a locking member, the housing member having a smooth longitudinal bore communicating with a threaded portion, the locking member mounted on the housing member. An insert member having a first threaded end portion is received within the threaded portion of the bore, an enlarged portion positioned to be drawn within the smooth portion of the longitudinal bore in response to rotation of the insert member in the longitudinal bore and a drive portion configured to receive a torque applying tool in a rotationally driving manner. A torque limiting region is located in the insert member to limit an amount of torque the drive portion can transmit to the first threaded end portion.

Abstract: A bottle stopper mainly includes a body, a plug and a jacket. The body has an expansion spread by the plug and outwardly confronting with the jacket. The plug comprises two necks for two different engagements alternatively engaged with the body to provide a locking means and a resealing means for bottle neck. The body is structurally retained between the plug and the jacket being assembled as a unit to form the bottle stopper. When the bottle stopper is initially inserted into a bottle neck and pressed to position at the first engagement, the locking means provides a maximum expansion to lock around the bottle neck. And it has an appearance and a function of indicating whether the bottle neck has previously opened or the stopper has been used. When the bottle stopper is pressed downward positioning at the second engagement, the resealing means provides a slightly expansion for allowing to initially release and reseal the bottle neck.

Abstract: A tube plug kit for sealing the end of a tube is provided. The tube plug kit includes a tube plug having a housing member and a locking member, an insert member having a threaded end portion received within the threaded portion of the bore and an enlarged portion positioned to be drawn within the smooth portion of the longitudinal bore in response to rotation of the insert member in the longitudinal bore. The tube plug kit also includes an actuating tool and a tapered member between the enlarged portion of the insert member and the longitudinal bore of the housing member. The enlarged portion has a recess therein for receiving the actuating tool.

Abstract: The expandable seal assembly can be used to seal the contents of a container. When air pressure is applied to a chamber, rods with leaf springs on a distal end extend outward mating an expandable elastic to the inside edge of the container to be sealed. A spring-mounted ball valve maintains the pressure in the chamber when the source of the air pressure applied to the chamber is removed.

Abstract: A closure for the open mouth of an airtight container. The closure has a resiliently flexible diaphragm which has a peripheral edge (37) which can sealing engage against an inside wall surface of the open mouth. The diaphragm (13) is engaged with the second cover section (12) of a cover. A pair of toggles (24) are pivotally mounted on axles (22) of second cover section (12). The levers (30) of the toggles (24) extend through an opening (44) in the first or outer cover section (11) when the first and second cover sections (11, 12) are snap-locked together. By moving the levers (30) toward one another the respective feet (27) of the toggle (24) engage with area (35) of the diaphragm (13) to deform the diaphragm and thereby break a sealing effect between the peripheral edge of the diaphragm and the inside wall surface of the open mouth.

Abstract: High-pressure static seals and pressure vessels with static seals for containing fluid at high pressures are shown and described. Embodiments of the invention allow a plug to be easily, manually inserted into and removed from the pressure vessel. A metallic ring in the seal is configured to expand under pressure to prevent an O-ring in the seal from being extruded into a gap between the plug and the vessel wall, but not to expand so much as to cause galling or similar damage when the seal moves with respect to the wall under elevated pressure.

Abstract: A bottle stopper for sealing and resealing a bottle neck. The bottle stopper includes a body, a plug and a jacket. The body includes legs and axially guiding grooves thereof provided on its inner circumference. The plug includes axially positioning ribs adapted to engage with the corresponding axially guiding grooves in order to increase reliability of the combined structure. A combined body and plug member is inserted into the jacket to form a bottle stopper. When the radially inner flange is engaged with the groove, the plug cannot be removed from the body. As the plug is axially pressed into the body, the radial inner flange is then disengaged with the groove, and the outer circumference of the jacket may radially expand to seal or to reseal a bottle.

Abstract: The expandable seal assembly can be used to seal the contents of a container. When air pressure is applied to a chamber, rods with leaf springs on a distal end extend outward mating an expandable elastic to the inside edge of the container to be sealed. A spring-mounted ball valve maintains the pressure in the chamber when the source of the air pressure applied to the chamber is removed.

Abstract: A bottle plug having a body, a plug and an elastomer member. The body defines a space having an inner circumference that forms a retracted surface that projects inwardly with respect to an axis of the body to define an expansion portion. The plug includes a leg adapted to engage the retracted surface of the body. The elastomer member is configured to receive the combination of the body and plug and further includes an outer circumference which is arranged to be received by a bottle neck. Insertion of the plug into the expansion portion urges the outer circumference of the elastomer member to expand radially to thereby seal the inner circumference of the bottle neck.

Abstract: A plug structure of a liquid drainage installation includes a sealing ring clamped between two combined half bodies. The outer periphery of the sealing ring protrudes outward from the outer periphery of the two half bodies. Thus, the protruding dimension of the sealing ring may be adjusted by the clamping extent of the two bodies, thereby compensating the wearing amount due to usage. The two half bodies may be separated easily, thereby facilitating replacing the sealing ring.

Abstract: In order to make available a tank cap with a sealing plug (13, 15; 18, 21) and a filler opening (10) in the fuel tank, which allows a simplified production and a more flexible use, it is proposed that the filler opening (10) is configured in such a way that the filler opening (10) allows the fixing of a sealing plug (13, 15; 18, 21) by means of two fixing systems or more.

Abstract: The invention disclosed and claimed is an improved plug with an internal anchor. The plug has particular utility in masking openings in parts to be coated. Generally, the plug comprises a compressible, resilient plug body and a compression mechanism. The compression mechanism compresses the plug body between an internal plug anchor and an opposed plug compression surface. The compressive force causes the plug circumference to increase forming a tight seal between the plug and walls forming the opening. The internal anchor design and absence of any axial opening through the entire plug body prevent fluids and other coating materials from passing through the internal plug body and into the interior of the part to be coated thereby avoiding costly damage to the part.

Abstract: An improved toilet bowl construction for providing access to a siphon or trap therein comprises a toilet bowl which defines an opening positioned in communication with the siphon. The toilet bowl construction further includes an annular cover member coupled to a resilient sealing member. The cover member includes a lever pivotally coupled thereto and movable by a user between a first position and a second position displaced from the first position. The lever bears against the resilient sealing member when placed in the second position. The pressure against the sealing member decreases the diameter of the sealing member such that the sealing member can be inserted into the access opening. Returning the lever to the first or non-bearing position allows the diameter of the sealing member to increase and seal tightly within the access opening. Removal of the sealing member is accomplished by again placing the lever in the second or bearing position and withdrawing the sealing member from the opening.

Abstract: A fuel tank cap at the filler neck of a motor vehicle fuel tank, with a locking gas cap, which can be swiveled about a pivoting axis and a locking part, which is disposed internally at the locking gas cap and lies against the edge of the filler neck, sealing it, in the closed position, in which it can be locked and in which the locking gas cap is spring-loaded in the opening direction, it being possible to unlock the locking gas cap and swivel it into the open position by pressing down on it briefly especially by means of a robot-guided fuel pump nozzle, the opening of the tank connection pipe, which is to be closed off, being disposed offset towards the inside at the inner end of an essentially cylindrical expansion of the tank connection pipe and that, internally, at the locking gas cap, a casing being fastened, in which a piston, which is provided with a seal that is seated on the opening that is to be closed off, is mounted axially displaceable and which, when acted upon axially by pressure, forces a bloc