US 11,814,193 B2
Modular staircase
Jacob W. Springer, Canyon Country, CA (US)
Assigned to Federal Express Corporation, Memphis, TN (US)
Filed by Federal Express Corporation, Memphis, TN (US)
Filed on Dec. 3, 2019, as Appl. No. 16/701,330.
Application 16/701,330 is a continuation of application No. 15/609,255, filed on May 31, 2017, granted, now 10,532,827.
Prior Publication US 2020/0102094 A1, Apr. 2, 2020
This patent is subject to a terminal disclaimer.
Int. Cl. B64F 1/315 (2006.01); E06C 1/383 (2006.01); E06C 5/02 (2006.01); E06C 5/06 (2006.01); E06C 1/397 (2006.01); E06C 5/04 (2006.01); E04G 27/00 (2006.01)
CPC B64F 1/315 (2013.01) [E04G 27/00 (2013.01); E06C 1/383 (2013.01); E06C 1/397 (2013.01); E06C 5/02 (2013.01); E06C 5/04 (2013.01); E06C 5/06 (2013.01)] 11 Claims
OG exemplary drawing
 
1. A modular staircase, comprising:
a first stair module including:
a first staircase section having a first plurality of steps progressing from a first proximal end to a first distal end; and
a foldable first support member connectable to the first distal end, the first support member configured to position the first distal end at a first level higher than the first proximal end, wherein the foldable first support member includes:
a first support brace connectable to the first distal end of the first staircase section; and
a first connector brace pivotably connected to the first support brace and detachably connected to the first staircase section at a location closer to the first proximal end than the first distal end;
a second stair module including:
a second staircase section having a second plurality of steps progressing from a second proximal end to a second distal end, the second staircase section being connectable to and detachable from the first stair module at the second proximal end; and
a foldable second support member connectable to the second distal end, the second support member configured to position the second distal end at a second level higher than the second proximal end, wherein the foldable second support member includes:
a second support brace connectable to the second distal end of the second staircase section;
a second connector brace pivotably connected to the second support brace and detachably connected to the first support brace; and
one or more wheels enabling ground movement of the second stair module;
wherein:
the first staircase section includes at least one mounting bar disposed adjacent the first distal end, and
the second stair module includes at least one fastener configured to be engaged with the at least one mounting bar.