A closure device designed to be put in place on, or removed from, a container, including a cap carrying at least two security projections, each provided with an axial locking abutment that can be moved radially between a cooperation position, in which the axial locking abutment engages with an axial locking abutment carried by the container, in order to hold the cap on the container, and a separation position, in which the axial locking abutment is separated from the axial locking abutment carried by the container. The closure device further includes a security ring snap-fitted onto the cap. The security projections are arranged on an internal surface of the security ring and the radial position of each axial locking abutment changes, by ovalization, from its cooperation position to its separation position.

An internal cap member intended to be placed on the container. The internal cap member carries a security ring including a security element including a locking abutment mobile radially between a cooperation position, favored by elastic biasing, in which the locking abutment cooperates with a complementary locking abutment carried by the container, and a separation position, in which the locking abutment is separated from the complementary locking abutment. The security ring is mobile axially on the cap. The closure device also includes an element for transforming the axial movement of the security ring into radial movement of the security element, making it possible for the radial position of the locking abutment to change from its cooperation position to its separation position.

A sealable powder box of the present application comprises an upper casing, a lower casing, an inner casing mounted in the upper casing, a storage box mounted in the lower casing, and a tray arranged in the storage box. The sealable powder box further comprises a gasket, the gasket is arranged in the tray by means of injection molding, or is sandwiched between the tray and the storage box and engaged with the tray. The inner casing is mounted in the upper casing, and the top part of the inner casing penetrates the top part of the upper casing. The upper casing and the inner casing are axially slidable and radially rotatable relative to each other, the storage box is engaged in the lower casing and threadingly connected with the upper casing, and the inner casing and the tray are rotatably connected with the lower casing by a pin.

A manway cover assembly can be used to control access to the interior of a railroad tank car or other type of tank or structure. The manway cover assembly can have a tightening system, such as a screw tightening system and an attachment system. The attachment system can have a ledge configured to engage a flange that surrounds an opening. A cover can control access to the opening. The tightening system can secure the ledge to the flange and lock the cover over the opening. A manway cover assembly can also be used for selectively sealing an access passageway of a tank. The manway cover assembly can have an internal seal that remains sealed independent of movement between the cover and the opening within a set range of movement.

An injection molded lid (100) for use with a container, which includes a lid body (110) and a securing member (150). The lid body (110) includes a cover portion (120) and a flange portion(130). One side wall (134) of the flange portion has one or more notches (138). The securing member (150) includes a frame (152) and at least one tab (154). The tab (154) covers the notch. The securing member (150) provides extra fastening strength that prevents the spillage or leakage of the content within the container.

A lid assembly includes a lid element having an annularly shaped peripheral portion configured to be axially aligned with and disposed between a rim of a canning container and a radially extending portion of a retainer element when the lid assembly is engaging the canning container and the retainer element is removably coupled to the canning container. An annularly shaped sealing element is disposed on the peripheral portion of the lid element and is configured to directly engage the rim of the canning container when the lid assembly is contacting the canning container. A plurality of projections is formed in the peripheral portion of the lid element with each of the projections forming a distally disposed surface of the peripheral portion with respect to an exterior axial direction of the lid element extending away from an interior of the canning container when the lid assembly is engaging the rim.

A lid assembly includes a lid element having an annularly shaped peripheral portion configured to be axially aligned with and disposed between a rim of a canning container and a radially extending portion of a retainer element when the lid assembly is engaging the canning container and the retainer element is removably coupled to the canning container. An annularly shaped sealing element is disposed on the peripheral portion of the lid element and is configured to directly engage the rim of the canning container when the lid assembly is contacting the canning container. A plurality of projections is formed in the peripheral portion of the lid element with each of the projections forming a distally disposed surface of the peripheral portion with respect to an exterior axial direction of the lid element extending away from an interior of the canning container when the lid assembly is engaging the rim.

A composite closure including a panel and an outer portion defining a recess into which the panel is received. The composite closure may be coupled with a container. The panel deflects downward toward the container when the composite closure is sealed with the container and the interior of the container is under vacuum.

A composite closure including a panel and an outer portion defining a recess into which the panel is received. The composite closure may be coupled with a container. The panel deflects downward toward the container when the composite closure is sealed with the container and the interior of the container is under vacuum.

Disclosed is a high-reliability flight case with an auxiliary locking function, comprising a case body and a case door located at an opening of the case body, an outer wall of the case door is fixedly connected with an iron shaft, the outer wall of the case door is fixedly connected with a box body, the box body is symmetrically connected with two inserting rods through a rebound mechanism, connecting seats are integrally formed at positions corresponding to ends of the iron shaft and ends of the inserting rods on an outer wall of an opening of the case body, and inserting holes matched with the iron shaft and the inserting rods are formed in the connecting seats in a penetrating mode.