| CPC B64D 11/0619 (2014.12) | 13 Claims |
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1. A seat, comprising:
a seat base;
a seat bucket movable relative to the seat base;
a motion controller coupled between the seat bucket and the seat base configured to control a motion path of the seat bucket, the motion controller including a carrier assembly adjustably coupled to the seat base, and a carriage assembly coupled to the seat bucket and movably coupled to the carrier assembly;
a first energy absorbing device associated with the motion controller and including an elastomeric element, the elastomeric element configured to control stroking motion of the motion controller relative to the seat base; and
a second energy absorbing device associated with the motion controller and including a deformable element, the deformable element movably coupling the carriage assembly to the carrier assembly;
wherein:
when a first predetermined load value on the seat bucket is exceeded, the elastomeric element is configured to undergo resilient deformation to allow the motion controller to stroke relative to the seat base;
when a second predetermined load value on the seat bucket is exceeded, greater than the first predetermined load value, the deformable element is configured to undergo plastic deformation to allow the carriage assembly to stroke relative to the carrier assembly to allow the seat bucket to continue stroking relative to the seat base; and
the first and second energy absorbing devices are separate devices and are configured to activate sequentially such that the first energy absorbing device is configured to absorb first energy from a dynamic event and transfer remaining energy from the dynamic event to the second energy absorbing device.
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