An airbag assembly may include an airbag and an inflator that provides inflation gas to inflate the airbag. A filter module may be positioned such that inflation gas exiting the inflator must first pass through the filter module. The filter module may be formed of a sheet of metal that is wrapped into a generally spiraling tubular shape. The filter module may have an inner layer, an intermediate layer, and an outer layer. The intermediate layer generally encircles the inner layer, and the outer layer generally encircles the inner layer and the intermediate layer in a spiraling fashion. The inner layer, the intermediate layer, and the outer layer each may have a pattern of holes and dimples that are separate from and/or displaced from each other. The dimples may protrude toward an adjacent layer to maintain spacing to enable relatively unrestricted gas flow from the holes of the inner layer through unaligned holes of the intermediate layer and the outer layer. The resulting tortuous gas flow path may help to slow, cool, and/or purify the gas before it exits the inflator.

A small flying vehicle flown by radio control or autonomously by an auto pilot is equipped with an airbag device. The small flying vehicle has a main body part including a controller and a battery, a frame, a propeller, a motor, and a transmitting and receiving antenna. The airbag device has a gas supplier, a sensor, a controller, and an airbag. The airbag device is attached to the main body part, and the gas supplier is provided with a gas cylinder that releases a compressed gas when a closure member sealing the gas cylinder is broken, a breaker, including an electric igniter, that breaks the closure member, and introduction device that introduces the gas discharged from the gas cylinder and providing the pressurized gas into the airbag to inflate the airbag.

Gas generator including means to provide a pressurized gas, a gas exit portion and a throttle member located in said gas exit portion, having one or more openings for the passage of said gas and being deformable by a gas flowing through said throttle when the pressure of said gas is above a predetermined pressure, to prevent or reduce gas flow.

Gas generator including means to provide a pressurized gas, a gas exit portion and a throttle member located in said gas exit portion, having one or more openings for the passage of said gas and being deformable by a gas flowing through said throttle when the pressure of said gas is above a predetermined pressure, to prevent or reduce gas flow.

A valve assembly is provided and includes a valve housing, an actuator housing coupled to the valve housing and configured when actuated to open a normally-closed valve element in the valve housing whereby pressurized fluid is permitted to flow through the valve housing and a solenoid valve. The solenoid valve includes an armature-valve element balanced to remain in a closed position and an electromagnet. The electromagnet generates magnetic flux that moves the armature-valve element into an open position such that at least a portion of the pressurized fluid flows into the actuator housing to actuate the actuator housing.

An airbag for helping to protect an occupant of a vehicle having a roof and a cabin with a seat for the occupant includes an upper portion for being mounted to a vehicle roof, a lower portion having a ring-shaped configuration configured to encircle the occupant and a seatback of the vehicle seat when deployed, and at least one pillar connecting the lower portion to the upper portion. The lower portion encircles the seatback configures the lower portion to utilize the seatback as a reaction surface for supporting the lower portion against movement in response to an impacting occupant. An airbag module includes a housing that supports the airbag and an inflator. A vehicle safety system includes a sensor and a controller. The sensor senses the occurrence of an event for which deployment of the airbag is desired and produces a signal indicative thereof. The controller is connected to the sensor and, in response to receiving the signal, actuates the inflator to inflate and deploy the airbag.

An airbag for helping to protect an occupant of a vehicle having a roof and a cabin with a seat for the occupant includes an upper portion for being mounted to a vehicle roof, a lower portion having a ring-shaped configuration configured to encircle the occupant and a seatback of the vehicle seat when deployed, and at least one pillar connecting the lower portion to the upper portion. The lower portion encircles the seatback configures the lower portion to utilize the seatback as a reaction surface for supporting the lower portion against movement in response to an impacting occupant. An airbag module includes a housing that supports the airbag and an inflator. A vehicle safety system includes a sensor and a controller. The sensor senses the occurrence of an event for which deployment of the airbag is desired and produces a signal indicative thereof. The controller is connected to the sensor and, in response to receiving the signal, actuates the inflator to inflate and deploy the airbag.

The present invention provides a gas generator including: a housing having a top plate, a bottom plate located axially opposite to the top plate, and a circumferential wall located between the top plate and the bottom plate and provided with a gas discharge port; a partition wall provided with a single first communication hole, the partition wall being radially disposed in the housing to partition an interior of the housing into a first combustion chamber on the side of the top plate, which accommodates a first gas generating agent, and a second combustion chamber on the side of the bottom plate, which accommodates a second gas generating agent; a cylindrical guide member disposed between the first igniter attached to the bottom surface and the first communication hole, and provided with a second communication hole in a cylindrical wall thereof, the cylindrical guide member being disposed so as to enclose the first igniter, such that a second end opening thereof is connected to the first communication hole of the partition wall, the second end opening or the first communication hole being closed by a first closing member in a state where the second end opening or the first communication hole faces the first combustion chamber, the second communication hole closed by a second closing member in a state where the second communication hole faces the second combustion chamber, and a rupturing pressure of the first closing member being set lower than a rupturing pressure of the second closing member.

The present invention provides a gas generator including: a housing having a top plate, a bottom plate located axially opposite to the top plate, and a circumferential wall located between the top plate and the bottom plate and provided with a gas discharge port; a partition wall provided with a single first communication hole, the partition wall being radially disposed in the housing to partition an interior of the housing into a first combustion chamber on the side of the top plate, which accommodates a first gas generating agent, and a second combustion chamber on the side of the bottom plate, which accommodates a second gas generating agent; a cylindrical guide member disposed between the first igniter attached to the bottom surface and the first communication hole, and provided with a second communication hole in a cylindrical wall thereof, the cylindrical guide member being disposed so as to enclose the first igniter, such that a second end opening thereof is connected to the first communication hole of the partition wall, the second end opening or the first communication hole being closed by a first closing member in a state where the second end opening or the first communication hole faces the first combustion chamber, the second communication hole closed by a second closing member in a state where the second communication hole faces the second combustion chamber, and a rupturing pressure of the first closing member being set lower than a rupturing pressure of the second closing member.

Airbag cushion assemblies for aspirating ambient air to enhance inflation. Some embodiments may comprise an inflation module comprising an inflator and a plurality of inflation nozzles fluidly coupled with the inflator and configured to deliver inflation gas from the inflator into an airbag cushion. A housing coupled to the airbag cushion may comprise an aspiration inlet configured to allow for receipt of ambient air into the airbag cushion during inflation of the airbag cushion. The plurality of inflation nozzles may be configured to, upon actuation of the inflator, draw ambient air into the airbag cushion along with the inflation gas from the inflator. In some embodiments, a valve assembly may be positioned below the inflation nozzles and may be configured to automatically open upon actuation of the inflator and to automatically close during or following inflation of the airbag cushion.