The invention discloses a container stopper capable of being rapidly opened and closed, comprising a columnar plug body, the plunger body includes a stopper rod, the bottom portion of the stopper rod is provided with a base, the shape and size of the base correspond to the shape and size of the straight section of the container mouth or the minimum cross section of the container, the upper part of the base is provided with an annular plug body, a foldable and deformable elastic seal cartridge is arranged between the annular plug body and the base, the annular plug body and the base can both move mutually along the axial direction of the container in the container mouth under the effect of an external force to press the elastic seal cartridge, and the seal ring and the base together form a sealing layer which realizes the rapid closing of the container.

The invention discloses a container stopper capable of being rapidly opened and closed, comprising a columnar plug body, the plunger body includes a stopper rod, the bottom portion of the stopper rod is provided with a base, the shape and size of the base correspond to the shape and size of the straight section of the container mouth or the minimum cross section of the container, the upper part of the base is provided with an annular plug body, a foldable and deformable elastic seal cartridge is arranged between the annular plug body and the base, the annular plug body and the base can both move mutually along the axial direction of the container in the container mouth under the effect of an external force to press the elastic seal cartridge, and the seal ring and the base together form a sealing layer which realizes the rapid closing of the container.

A device for preventing air from displacing wine poured from a bottle. A retainable spout assembly comprises a bottle seal, a base having a liquid channel and vent channel, and a spout. A disposable bag assembly comprises folded limp inflatable bag attached to a vent tube which is attachable to the vent channel. As wine is poured, air enters the vent tube and inflates the pliable bag. After the bottle contents are consumed, the retainable subassembly may be removed from the disposable subassembly by leaving the disposable subassembly in the bottle or container. The retainable subassembly may be cleaned, and a replacement subassembly attached to the vent channel before inserting into a new container. The air displacement device may be inserted into a bottle before or after pouring wine. A pump or manual blow tube can be used to remove air from a partially-filled bottle.

A device for preventing air from displacing wine poured from a bottle. A retainable spout assembly comprises a bottle seal, a base having a liquid channel and vent channel, and a spout. A disposable bag assembly comprises folded limp inflatable bag attached to a vent tube which is attachable to the vent channel. As wine is poured, air enters the vent tube and inflates the pliable bag. After the bottle contents are consumed, the retainable subassembly may be removed from the disposable subassembly by leaving the disposable subassembly in the bottle or container. The retainable subassembly may be cleaned, and a replacement subassembly attached to the vent channel before inserting into a new container. The air displacement device may be inserted into a bottle before or after pouring wine. A pump or manual blow tube can be used to remove air from a partially-filled bottle.

A sealing plug including an elastic body and a stem coaxially assembled to one another. The elastic body has a main body which is suitable for being expanded radially when pulling on the free end of the stem which emerges out of said elastic body. The elastic body also has a head attached to the main body, the head having a compressive strength less than that in the main body.

An underwater vehicle includes an on board power grid, the power grid including powerlines, a plurality of DC energy storage sources based on lithium-ion batteries, each source having a positive terminal and a negative terminal, and being connected on the one hand to a charger and on the other hand to energy consumers of the vehicle, one of the terminals of each source being connected to a first powerline of the power grid, the other terminal of each source being connected on the one hand by a second powerline of the power grid to the charger through one-way semiconductor conducting unit and on the other hand by a third powerline of the electric grid to consumers through one-way semiconductor conducting unit.

A sealing cover for covering an opening of a barrel body includes an outer cover body, an inner cover body, an airtight ring and an operating member. The outer cover body includes two pivot connecting portions. The airtight ring is sleeved on an outer peripheral surface of the inner cover body. The operating member is pivotally connected to the pivot connecting portions and the inner cover body. The operating member is operable to pivot so as to drive movement of the inner cover body between a sealed position and an unsealed position. When at the sealed position, the airtight ring is deformed and airtightly pressed between the barrel body and the outer cover body. When at the unsealed position, the airtight ring restores to its original shape and is configured not to be pressed between the barrel body and the outer cover body.

Various systems for the containment or delivery of a product are provided. The systems allow for the storage of products at low temperatures and include a container closure inserted into a container (10). The container closure may have an elastomeric body (12) and include a material (14) having a negative coefficient of thermal expansion. In other systems, the material having a negative coefficient of thermal expansion may be inserted between the elastomeric container closure and a seal. Other systems may include an insert at least partially embedded within the elastomeric body of a container closure, an actuator having a distal end movably attached to the insert, and a resilient element between the distal end of the actuator and the insert, wherein the resilient material expands radially upon displacing the distal end of the actuator toward the insert.

Various systems for the containment or delivery of a product are provided. The systems allow for the storage of products at low temperatures and include a container closure inserted into a container (10). The container closure may have an elastomeric body (12) and include a material (14) having a negative coefficient of thermal expansion. In other systems, the material having a negative coefficient of thermal expansion may be inserted between the elastomeric container closure and a seal. Other systems may include an insert at least partially embedded within the elastomeric body of a container closure, an actuator having a distal end movably attached to the insert, and a resilient element between the distal end of the actuator and the insert, wherein the resilient material expands radially upon displacing the distal end of the actuator toward the insert.

A fluid preservation device, for preserving a liquid within a container, which includes an elongated member with a proximal end and a distal end and an inner shaft and an outer shaft. The outer shaft and inner shaft are attached to an expandable sealing member. The expandable sealing member has an expanded state and a collapsed state and a state change mechanism attached to the proximal end of the elongated member to change the state of the expandable sealing member between the expanded state and the collapsed state. When the expandable sealing member is in the collapsed state, it can pass through an opening of a container and when the expandable sealing member is in the expanded state it is big enough to contact the inner surface of the container near the surface of the liquid.