An impact shield for earthquake protection is described herein. The impact shield may include a canopy constructed of a puncture-resistant material, the canopy defining a first internal volume accessible via a first opening, the canopy being structured to form a semispherical shape when in an inflated state, the semispherical shape defining a space dimensioned for sheltering at least one human body; a support joined to the canopy and constructed of the puncture-resistant material, the support defining a second internal volume accessible via the first opening and a second opening, the support located within the space, the support structured to form a column when in the inflated state; and a fitting joined to the support for closing the second opening to fix the first internal volume and the second internal volume after inflation of the support and the canopy.

An impact shield for earthquake protection is described herein. The impact shield may include a canopy constructed of a puncture-resistant material, the canopy defining a first internal volume accessible via a first opening, the canopy being structured to form a semispherical shape when in an inflated state, the semispherical shape defining a space dimensioned for sheltering at least one human body; a support joined to the canopy and constructed of the puncture-resistant material, the support defining a second internal volume accessible via the first opening and a second opening, the support located within the space, the support structured to form a column when in the inflated state; and a fitting joined to the support for closing the second opening to fix the first internal volume and the second internal volume after inflation of the support and the canopy.

The invention discloses a center lock structure, comprises a chassis, rotary sliding sleeve and a center rod, the top of the rotary sliding sleeve is circumferentially and slidely connected with the chassis; and the center rod is extended into the rotary sliding sleeve along the top of the chassis, an elastic member is provided at one side on the bottom of the center rod, the elastic member is exposed outside the center rod when there is no external force, and the elastic member is concealed in the center rod when squeezed by an external force; in the invention, by the center rod, upper and lower rotary sliding sleeve, through holes and the accommodating grooves for pressing or releasing the elastic member, the structure can be unlocked by rotation and pull-down.

The invention discloses a center lock structure, comprises a chassis, rotary sliding sleeve and a center rod, the top of the rotary sliding sleeve is circumferentially and slidely connected with the chassis; and the center rod is extended into the rotary sliding sleeve along the top of the chassis, an elastic member is provided at one side on the bottom of the center rod, the elastic member is exposed outside the center rod when there is no external force, and the elastic member is concealed in the center rod when squeezed by an external force; in the invention, by the center rod, upper and lower rotary sliding sleeve, through holes and the accommodating grooves for pressing or releasing the elastic member, the structure can be unlocked by rotation and pull-down.

Disclosed is a tent frame, a unit tent and an extendable cubic tent group. The tent group is assembled from a plurality of unit tents sharing edge structures. The unit tent consists of an inflatable tarpaulin and a tent frame. The tent frame includes bases, columns and beams. The beam is provided with at least a first water channel and a second water channel in a length direction. The present invention is simplified in the structures of the columns and the beams, which is more beneficial to coping with the situation of large water volume. Besides, the assembly of small parts can be reduced, and the stability of the structure can be enhanced, so that the structural weight of the overall frame is greatly reduced while the hidden water discharge function is reserved.

Disclosed is a tent frame, a unit tent and an extendable cubic tent group. The tent group is assembled from a plurality of unit tents sharing edge structures. The unit tent consists of an inflatable tarpaulin and a tent frame. The tent frame includes bases, columns and beams. The beam is provided with at least a first water channel and a second water channel in a length direction. The present invention is simplified in the structures of the columns and the beams, which is more beneficial to coping with the situation of large water volume. Besides, the assembly of small parts can be reduced, and the stability of the structure can be enhanced, so that the structural weight of the overall frame is greatly reduced while the hidden water discharge function is reserved.

A method of installing a releasable shade membrane to a shade system is presented. The method comprises installing a tension release system within a structural component of the shade system. The tension release system comprises a threaded member configured to, when actuated, cause a coupling mechanism to move along an axis defined by the threaded member. The method also comprises coupling a shade membrane to the coupling mechanism. The method also comprises actuating the threaded member in a first direction, such that the coupling mechanism moves along the axis in a tensioning direction. The tension release system is configured to release applied tension upon actuation of the threaded member in a second direction, causing the coupling mechanism to move along the axis in a release direction. The release direction is substantially the reverse direction of the tensioning direction.

An expandable shelter includes a canopy adjustable in length along a longitudinal axis. Legs support the canopy in an A-frame configuration defining an apex angle along an upper ridgeline. A shaded or sheltered area that is variable in length and width is defined. A mobile shelter includes multiple protective structures, each supported by a respective generally vertical supporting column having a lower handle configured to be gripped and supported by a respective bearer. Each handle may be toroidal in shape for use at any angle. Non-level terrain may be traversed by coordinated movements of bearers with regard to each respective handle such that the protective structures are maintained in a desired configuration.

A pneumatic tent (1) with at least one pole (2) extending in final assembly position vertically from the mounting surface (8) and a dome-shaped tent cover (3) extending over the self-supporting pole (2) which is locked and tensioned with locking means (4) in relation to the mounting surface (8), wherein the pole (2) containing a pressurized filling gas is constructed as single or multiple layered and includes a controllable or adjustable illumination device (5) that is placed inside the pole (2).

A pneumatic tent (1) with at least one pole (2) extending in final assembly position vertically from the mounting surface (8) and a dome-shaped tent cover (3) extending over the self-supporting pole (2) which is locked and tensioned with locking means (4) in relation to the mounting surface (8), wherein the pole (2) containing a pressurized filling gas is constructed as single or multiple layered and includes a controllable or adjustable illumination device (5) that is placed inside the pole (2).