US 12,233,818 B2
Stair system for vehicle
Deepak Kapur, Naperville, IL (US); David Bruford, Shelby Township, MI (US); Aleyna Kapur, Dearborn, MI (US); Robert Grinstead, Chisago City, MN (US); Roman Kapur, Naperville, IL (US); Ashlon Lionel Frank, Mangalore (IN); Yash Rajeev Banka, Mumbai (IN); Michelle Murray, Greenlawn, NY (US); Zihui Lin, Guangdong (CN); Ambar Ratan Kakkar, New Delhi (IN); and Yi Zhao, Shanghai (CN)
Assigned to Opus Mach LLC, Naperville, IL (US)
Filed by Opus Mach LLC, Naperville, IL (US)
Filed on Dec. 14, 2022, as Appl. No. 18/081,182.
Application 18/081,182 is a continuation in part of application No. 17/453,687, filed on Nov. 5, 2021, granted, now 11,951,947.
Claims priority of provisional application 63/109,921, filed on Nov. 5, 2020.
Prior Publication US 2023/0114575 A1, Apr. 13, 2023
Int. Cl. B60R 3/02 (2006.01)
CPC B60R 3/02 (2013.01) 22 Claims
OG exemplary drawing
 
1. A stair system attached to a cargo platform of a vehicle and movable between a deployed configuration providing access to a storage area of the cargo platform and a road-ready stowed configuration, the stair system comprising:
a mounting plate configured to be attached to the cargo platform of the vehicle, the mounting plate including a backwall and a pair of sidewalls that extend from the backwall;
a stair assembly including a top platform slidably received within the mounting plate and a plurality of step platforms pivotally attached to the top platform;
a pair of handles pivotally attached to the stair assembly on opposing sides of the stair assembly, wherein each handle including a handrail and a first connecting bar that is attached to the handrail at a first bar end and attached to the stair assembly at a second bar end;
a linkage assembly comprising:
a pair of slotted links attached to the backwall of the mounting plate, each slotted link includes a slot that extends between a first link end and a second link end;
a pair of first links disposed on opposing sides of the stair assembly, each first link includes a third link end that is slidable relative to the slot and a fourth link end that is pivotally attached to the stair assembly;
wherein, when in the road-ready stowed configuration, the stair system is configured to be positioned beneath the cargo platform; and
wherein, when in the deployed configuration, the stair system is configured to extend outwardly from a side of the cargo platform.