Abstract: Occupant restraint systems for use in aircraft and other vehicles are described herein. In some embodiments, the occupant restraint systems include an under-seat airbag positioned below a seat cushion having a separation feature extending laterally therethrough. The separation feature enables a front cushion portion to move upwardly and away from a seat pan by a greater distance than a rear cushion portion upon inflation of the under-seat airbag, thereby favorably positioning the seat occupant's thighs relative to the seat occupant's torso.

Abstract: Web pretensioning system devices for increasing the amount of web retracted by a given pretensioning stroke are disclosed. In some embodiments, the disclosed web pretensioning systems can include a pretension multiplier configured to receive a web of an aircraft passenger seat occupant restraint system. The pretension multiplier can include a web guide and a web coupling that is operably connected to a pretensioner. In operation, the pretensioner rapidly pulls or otherwise moves the web coupling away from the web guide a first distance, thereby retracting a loop of the web through the web guide. As a result of retracting the loop of web through the web guide, the overall retracted length of the web is equal to a second distance that is greater than the first distance.

Abstract: Airbag systems for use in aircraft are described herein. In some embodiments, an occupant restraint system for use with a passenger seat on an aircraft includes an under-seat airbag having a leg restraint portion. The under-seat airbag can be stowed approximate to a seat pan prior to use. In operation, the under-seat airbag can inflate to reduce occupant forward head path excursion and/or forward extension of the occupant's legs during a crash or other rapid deceleration event.

Abstract: Airbag systems for use in aircraft are described herein. In some embodiments, an occupant restraint system for use with a passenger seat on an aircraft includes an under-seat airbag and a lap belt airbag. The lap belt airbag can be operably positioned on a lap belt configured to be fastened around a seat occupant, and the under-seat airbag can be positioned proximate to a seat pan. In operation, the under-seat airbag and the lap belt airbag can inflate simultaneously, or at least approximately simultaneously, to reduce occupant forward head path excursion during a crash or other rapid deceleration event.