An aspirator includes a duct having a wall with a surface bounding a converging portion and a diverging portion of the duct. The converging portion of the duct has an inlet and the diverging portion of the duct has an outlet, the inlet being in fluid communication with the outlet through the converging portion and the diverging portion of the duct. The surface of the duct wall includes a conformal surface portion extending between the inlet of the duct and the outlet of the duct that is conformal with an aspirator seat surface portion of a support structure to conform the duct to the support structure. Evacuation assemblies are also described.

An aspirator includes a duct having a wall with a surface bounding a converging portion and a diverging portion of the duct. The converging portion of the duct has an inlet and the diverging portion of the duct has an outlet, the inlet being in fluid communication with the outlet through the converging portion and the diverging portion of the duct. The surface of the duct wall includes a conformal surface portion extending between the inlet of the duct and the outlet of the duct that is conformal with an aspirator seat surface portion of a support structure to conform the duct to the support structure. Evacuation assemblies are also described.

An aspirator system is disclosed comprising a collapsible/extendable aspirator air channel, wherein a burstable seal for entrapping air across the exit channel is provided, wherein said entrapped air creates a pressure causing the aspirator to extend to its extended state, whereupon the seal bursts and opens the air channel.

An aspirator system is disclosed comprising a collapsible/extendable aspirator air channel, wherein a burstable seal for entrapping air across the exit channel is provided, wherein said entrapped air creates a pressure causing the aspirator to extend to its extended state, whereupon the seal bursts and opens the air channel.

An aspirator system is disclosed comprising a collapsible/extendable aspirator air channel, wherein a burstable seal for entrapping air across the exit channel is provided, wherein said entrapped air creates a pressure causing the aspirator to extend to its extended state, whereupon the seal bursts and opens the air channel.

The present invention relates to a portable airbag system for people, comprising a support intended to be worn by a user, and an airbag device comprising at least one inflatable bag having at least one central part (2a) designed to be disposed behind the head of a user after triggering. The airbag device is assembled in a cover or bag part forming a unit configured to be disposed entirely on the back of a user before deploying, the airbag device being fixed by means of a fixing device such as to be removable and separable from the support.

An aspirator system is disclosed comprising a collapsible/extendable aspirator air channel, wherein a burstable seal for entrapping air across the exit channel is provided, wherein said entrapped air creates a pressure causing the aspirator to extend to its extended state, whereupon the seal bursts and opens the air channel.