US 11,858,612 B2
Rotating retractable step system
Christopher B. Singleton, Lake Stevens, WA (US); Joshua Yu-Hu Lee, Seattle, WA (US); and Scott Edward Coburn, Newcastle, WA (US)
Assigned to The Boeing Company, Chicago, IL (US)
Filed by The Boeing Company, Chicago, IL (US)
Filed on Dec. 20, 2019, as Appl. No. 16/723,669.
Application 16/723,669 is a division of application No. 15/339,138, filed on Oct. 31, 2016, granted, now 10,807,696, issued on Oct. 20, 2020.
Prior Publication US 2020/0122817 A1, Apr. 23, 2020
Int. Cl. B64C 1/24 (2006.01); A47B 46/00 (2006.01); B64D 11/04 (2006.01); E06C 1/00 (2006.01)
CPC B64C 1/24 (2013.01) [A47B 46/00 (2013.01); B64D 11/04 (2013.01); E06C 1/005 (2013.01); A47B 2220/05 (2013.01)] 20 Claims
OG exemplary drawing
 
1. A step system positioned within a wall, such that the step system comprises:
an insert configured to fit within a cutout in the wall;
a first tension spring attached to:
an interior of the insert; and
a first end of a shaft;
a second end of the shaft rotatably connected to a foot pedal, such that with the foot pedal in a stowed position a step surface of the foot pedal rests within and parallel to a face of the wall;
a grip connected to linkage bars that connect 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, a trim surface of the grip remains flush with a trim surface of the wall;
a second collar anchored onto the shaft and aligned with the first collar; and
a locking mechanism configured to retain the foot pedal outside of the wall with the step surface perpendicular to the face of the wall in a deployed position.