An air vent device for a ventilation system of a vehicle. The device has a pipe forming an air channel for providing air to a compartment of the vehicle and a diffuser for disturbing the airflow provided to the vehicle compartment. The diffuser has a portion made of a flexible material which diffuser portion is arranged to cover a part of a cross-section area of the air channel and the diffuser portion is expandable for varying the size of the covered part of the air channel cross section area.

The dual plenum for air distribution comprises a first chamber (1) and a second chamber (2) sharing at least one common wall (14), an air inlet (3) only in the first chamber communicated to an air supply source (8) by a pressurized air supply conduit (9), an air passage regulating device (7) in the common wall (14) selectively communicating the second chamber to the first chamber in response to an air pressure level in the first chamber, a first air outlet (10) in the first chamber and a second air outlet (11) in the second chamber through which pressurized air is evacuated from the first and second chambers, respectively, to an enclosure. The first and second air outlets have respective first and second diffusers (12, 13) which provide respective horizontal first and second air passage areas (S1, S2) and which direct air within an enclosure in general of a building.

A pressure relief assembly includes a housing defining an air passage chamber having at least one opening, and a membrane flap secured within the air passage chamber. The membrane flap is configured to move into an open position to expose the opening(s) to relieve air pressure. A plurality of flap-retaining clips securely couple the membrane flap to the housing. Each of the plurality of the flap-retaining clips includes a main body. A housing-connecting tab extends from a first end of the main body. The housing-connecting tab is retained within a retaining channel formed in the housing. Opposed flap-retention wings laterally extend from opposite sides of the main body. A portion of the membrane flap is trapped between the opposed flap-retention wings and the housing to securely couple the membrane flap to the housing.

At least some aspects of the present disclose feature a flow control device to be used between two inflatable sections. The flow control device is a one-way flow control device allowing inflating medium to flow in one direction. In such embodiments, the flow control device is in an open state when a first inflatable section is inflated such that a second inflatable section is also inflated. The flow control device is in close state when the second inflatable section is inflated such that the first inflatable section is not inflated.

Assembly for positioning of a regulation membrane (1) in an air duct, the assembly comprising: a threaded rod (8), a transferrable holder adapted for attaching the regulation membrane (1) and having a through opening provided with an internal thread, said holder being screwed on the threaded rod (8) and being movable along the longitudinal axis of the threaded rod (8) by rotating the threaded rod (8) in the transferrable holder, and at least one element for delimiting the movement of the transferrable holder along a single plane.

An air venting apparatus includes: a base portion, assembled on a mounting reference surface in a use state; an end portion; and a side wall having one or more air outlets and connecting the base portion and the end portion, where the side wall has a retracted state close to the base portion and an extended state away from the base portion and is capable of driving the end portion to reciprocally move between the retracted state and the extended state. According to the air venting apparatus and the air conditioning system, with the configuration of the side wall that is retractable in the length direction, the air venting volume and the air venting direction of the air venting apparatus can be adjusted by adjusting the air outlets on the side wall, and attachment between the end portion and the base portion can be achieved in a non-operating state.

A pressure relief assembly includes a housing defining an air passage chamber having at least one opening, and a membrane flap secured within the air passage chamber. The membrane flap is configured to move into an open position to expose the opening(s) to relieve air pressure. A plurality of flap-retaining clips securely couple the membrane flap to the housing. Each of the plurality of the flap-retaining clips includes a main body. A housing-connecting tab extends from a first end of the main body. The housing-connecting tab is retained within a retaining channel formed in the housing. Opposed flap-retention wings laterally extend from opposite sides of the main body. A portion of the membrane flap is trapped between the opposed flap-retention wings and the housing to securely couple the membrane flap to the housing.

An air vent device for a ventilation system of a vehicle. The device has a pipe forming an air channel for providing air to a compartment of the vehicle and a diffuser for disturbing the airflow provided to the vehicle compartment. The diffuser has a portion made of a flexible material which diffuser portion is arranged to cover a part of a cross-section area of the air channel and the diffuser portion is expandable for varying the size of the covered part of the air channel cross section area.

At least some aspects of the present disclose feature a flow control device to be used between two inflatable sections. The flow control device is a one-way flow control device allowing inflating medium to flow in one direction. In such embodiments, the flow control device is in an open state when a first inflatable section is inflated such that a second inflatable section is also inflated. The flow control device is in close state when the second inflatable section is inflated such that the first inflatable section is not inflated.