Patent ID: 11951947
Assignee: OPUS MACH LLC
Field: Transport (Mechanical engineering)
Classification: CPC B | IPC B

Claim 17:
18. A commercial vehicle comprising:
a passenger cab;
a cargo platform located rear of the passenger cab comprising an upper side, an underside, a side rail and a cargo storage area;
a stair system attached to the cargo platform and movable between a deployed configuration and a stowed configuration, the stair system comprising:
a pair of mounting brackets attached to one of the underside of the cargo platform and the side rail the cargo platform;
a stair assembly pivotally attached to the mounting brackets at a first pivot axis, the stair assembly comprising a first support frame comprising a first frame rail and a second frame rail, a plurality of step platforms secured between the first frame rail and the second frame rail, a first side plate attached to first frame rail and comprising a first elongated slot extending along a first length of the first side plate and a second side plate attached to the second frame rail and comprising a second elongated slot extending along a second length of the second side plate; and
a handle assembly pivotally attached to the mounting brackets at a second pivot axis and pivotally and slidably attached to the first and second side plates of the first and second frame rails of the stair assembly, the handle assembly comprising a first hand rail having a first lower end and a first upper end and a first handle support frame connected to the first hand rail and a second hand rail having a second lower end and a second upper end and a second handle support frame connected to the second hand rail;
a first fastener coupling the first handle support frame to the first side plate, the first fastener at least partially disposed in the first elongated slot of the first side plate;
a second fastener coupling the second handle support frame to the second side plate, the second fastener at least partially disposed in the second elongated slot of the second side plate;
wherein, when the stair system moves between the stowed configuration and the deployed configuration, the first fastener is operable to travel along the first elongated slot of the first side plate of the first frame rail, the second fastener is operable to travel along the second elongated slot of the second side plate of the second frame rail, and both the stair assembly and the handle assembly are operable to rotate about the first fastener and the second fastener;
wherein, in the deployed configuration, the stair system extends outwardly and downwardly from the side rail of the cargo platform, and the first upper end of the first hand rail and the second upper end of the second hand rail each extend over the upper side of the cargo platform; and
wherein, in the stowed configuration, the stair system does not occupy the cargo storage area and remains attached to the cargo platform.