Patent ID: 11858612
Assignee: THE BOEING COMPANY
Field: Transport (Mechanical engineering)
Classification: CPC B  A  E | IPC A  B  E

Claim 12:
13. A step system configured to transition between a stowed position and a deployed position, such that the step system that comprises:
an insert configured to fit within a cutout in a wall;
a first tension spring attached to:
an interior of the insert at a first end of the first tension spring; and
to a first end of a shaft at a second end of the first tension spring;

a second end of the shaft rotatably connected to a foot pedal on a side of the foot pedal opposite a trim surface of the foot pedal, such that with the foot pedal in a stowed position, and a step surface of the foot pedal rests within and parallel to a face of the wall;
a grip connected, on a side of the grip opposite a trim surface of the grip, to a first end of a first linkage bar that extends, parallel to the shaft, into the wall and connects, at a second end of the first linkage bar, to a second linkage bar that connects to:
a first end of a second tension spring anchored, at a second end of the second tension spring, within the insert; and
a first collar that encircles the shaft such that:
the shaft translates within the first collar; and
in the stowed position, the trim surface of the grip remains flush with the trim surface of the wall;

a second collar anchored onto the shaft such that a deployment of the grip out of the wall translates the first collar into contact with the second collar such that the side of the foot pedal opposite the trim surface of the foot pedal extends out beyond a trim surface of the wall;
a locking mechanism configured to the foot pedal outside of the wall with the step surface perpendicular to the face of the wall in the deployed position; and
an actuator configured to initiate a movement of the foot pedal, such that the actuator comprises the grip.