This patent application discloses a protection system using one of multilayer airbag, expandable pads, and compressed air for moving and flying vehicles and equipments. The multilayer airbag consists of a number of independent airbags within one another which will be inflated with a time sequence or simultaneously. This type of protection system can be used for various moving vehicles and equipment to protect them from any force due to a predicted impact.

A multilayer airbag for a protection system. The multilayer airbag consists of a number of independent airbags within one another which will be inflated with a time sequence or simultaneously.

An airbag apparatus includes a gas generator, and an airbag. The airbag includes a first fabric inner tube and a second fabric inner tube, both surrounding at least a gas injecting portion of the gas generator to have a double tubular shape. Common portions of the first inner tube and the second inner tube in a tubular circumferential direction are coupled to an airbag main body by a coupling portion extending in a tubular length direction, and other common portions which are separated from the common portions of the first inner tube and the second inner tube by a central angle (a central angle in a state where the airbag is only deployed and not inflated) of 70 to 180 degrees about the gas generator in the tubular circumferential direction are coupled to each other by a coupling portion extending in the tubular length direction.

An airbag equipped with a sub-chamber may include a main chamber expanding by being injected with gas in a collision, and a sub-chamber formed by folding a panel-shaped chamber to be combined with the main chamber and have self-supporting force, the sub-chamber assisting supporting force of the main chamber by expanding with the main chamber.

A side air bag device restraining an occupant at the early stage of the deployment. A seat back has a side support part bulging in a vehicle forward direction at a side part in a vehicle width direction. A seat frame of the seat is provided inside the seat. The side air bag device has an air bag deploying to restrain an occupant and an inflator supplying inflating gas. A side frame part of the seat frame is inside the side support part, and the side air bag device is on an outer side of the side frame. The air bag has a main chamber deploying forward and to an outer side of the side support part and a sub-chamber deploying inside the side support part. The sub-chamber deploys further toward a forward side than a vehicle forward edge of the side frame, at least a front part of the side support part protrudes and deforms toward an occupant side.

A restraint system includes a curtain airbag having an outboard layer and an inboard layer, an extension layer fixed to the inboard layer, and an inflator. The outboard and inboard layers define a first inflation chamber therebetween. The extension layer defines a second inflation chamber between the extension layer and the inboard layer. The inflator is in communication with the first and second inflation chambers. The first and second inflation chambers are fluidly isolated from each other.

Airbag assemblies are disclosed that can reduce rotational velocity of an occupant's head during a collision event and thereby mitigate traumatic brain injury/head injury to an occupant. An airbag includes a pair of lobes or protrusions to deploy and extend from the rear face of the airbag on either side of the occupant's head to limit rotation of the head. A pair of vertical tethers within an interior of the airbag configure the lobes and contour the rear face to form one or more low fabric tension zones or bubbles. The lobes maintain high fabric tension, similar to a pressurization of a main inflatable chamber of the airbag.

A restraint system includes a curtain airbag having an outboard layer and an inboard layer, an extension layer fixed to the inboard layer, and an inflator. The outboard and inboard layers define a first inflation chamber therebetween. The extension layer defines a second inflation chamber between the extension layer and the inboard layer. The inflator is in communication with the first and second inflation chambers. The first and second inflation chambers are fluidly isolated from each other.

An airbag includes a main bag section and a center bag section deployable to protrude towards a vehicle interior out of an inboard side of the main bag section. An inboard-side member, which forms the inboard side of the main bag section, is composed of a front component and a rear component. The center bag section includes a front wall and a rear wall. The front wall is composed of a rear extended region of the front component which is disposed in such a manner as to protrude rearward out of the rear edge of the front component. The rear wall is composed of a front extended region of the rear component which protrudes forward out of the front edge of the rear component and has a generally identical outer contour to the rear extended region. The center bag section is formed by jointing outer edges of the front and rear extended regions.

A vehicle occupant restraint system comprises a vehicle seat (12) which includes a backrest (15) with a seat back surface (24), the seat back surface (24) being provided for a vehicle occupant (26) seated in the vehicle seat (12) to lean against the same, and comprising an airbag module (16) integrated in the vehicle seat (12) which includes an airbag (18) being U-shaped in a horizontal section plane, wherein the airbag (18) includes an L-shaped restraining portion (20) and an L-shaped supporting portion (22), wherein the L-shaped restraining portion (20) has a fillable cushioning portion (30) forming a first leg of the L which is positioned along a seat longitudinal direction (L) spaced apart from the seat back surface (24) and which includes a baffle (42) being directed toward the seat back surface (24) and being provided to cushion the vehicle occupant (26), if he/she is displaced forward along the seat longitudinal direction (L), and includes a fillable connecting portion (32) forming a second leg of the L which connects the cushioning portion (30) to the vehicle seat (12), wherein the L-shaped supporting portion (22) includes a fillable first bearing portion (34) forming a first leg of the L and being positioned along a seat longitudinal direction (L) behind the backrest (14) and a second bearing portion (36) forming a second leg of the L which connects the first bearing portion (34) to the vehicle seat (12), wherein the connecting portion (32) of the restraining portion (20) and the second bearing portion (36) of the supporting portion (22) form a transverse leg (40) of the U, wherein the supporting portion (22) includes a bearing surface (44) directed toward the backrest (14) and counteracts a load (F) being directed away from the seat back surface (24) and acting on the restraining portion (20), if the vehicle occupant (26) impacts the baffle (42), so as to stabilize the restraining portion (20) relative to the vehicle seat (12).