The invention relates to an anti-crash seat with harness for an aircraft. The seat is mounted with limited sliding on at least one substantially vertical support (8), integral with the structure of said aircraft and associated with at least one energy-absorbing device (12), located between said seat and said structure. Advantageously: it is shaped as a bench (2) defining a plurality of seating spaces which are located side by side and each of which is equipped with a safety harness (6); it includes at least one additional energy-absorbing device (16), situated between said structure of the aircraft and a coupling mechanism (17) with locking provided at least at one of said seating spaces; and said mechanism (17) for coupling between said bench and said additional device is controlled by the harness (6) associated with said seating space.

A restraint system having a seat (20) and a seat suspension mechanism (40) for supporting the seat and permitting the seat to move relative to a vehicle floor, the seat suspension mechanism including two movable members (52,54) which move apart as the seat is moved closer to the floor. A seat lowering activator (100) is connected to the seat suspension mechanism for urging the movable members apart thereby forcibly urging the seat to a lower position relative to the floor during an emergency.

A tethering system for a vehicle seat movable in at least a vertical direction. The system includes a sensor mechanism to detect the occurrence of a prescribed vehicle event. Upon detecting such an event, the tethering system acts to limit the vertical movement of the vehicle seat and/or draw the vehicle seat toward the surface on which the seat is mounted. The prescribed vehicle event can include a vehicle rollover, a vehicle collision, or an excessive vehicle acceleration.

An energy attenuation system for absorbing at least a portion of the force impulse imparted to an occupant of an aircraft during a crash. The energy attenuation system comprises a seat and an air bag module. The air bag module includes an air bag positioned and deployable below the seat. The air bag allows the seat and its occupant to move in the direction of the applied impact forces under a controlled stroking force. Accordingly, the occupant may be exposed to a force having a magnitude substantially less than the magnitude of the force on the aircraft.

A restraint system for moving a vehicle seat and occupant toward the vehicle floor. Fluid cylinders or rotary spoolers are mounted to the seat and have respectively a pair of extendable piston rods or rotary outputs connected via rods or flexible members to a cable slidably mounted to the seat with one cable end connected to the buckle of a three point belt assembly mounted to the seat and an opposite end connected to one end of the lap portion of the belt assembly. Activation causes the cable to be pulled tensioning the belt assembly and application of downward pressure to the seat.