Patent ID: 9580910
Date: 2017-02-28
CPC Classifications: E04F

Claim:
1. An operable ramp moveable between a raised position and a lowered position, the operable ramp forming a pair of steps in the raised position, the operable ramp comprising: (a) a first panel rotatably coupled at a first end about a first axis, the first axis moving in a first direction when the operable ramp moves toward the lowered position and in a second direction when the operable ramp moves toward the raised position; (b) a link rotatably coupled at a first end to a second end of the first panel about a second axis, the link extending downward from the first panel in the raised position and rotating about a fixed third axis when the operable ramp moves from the raised position to the lowered position; (c) a second panel rotatably coupled at a first end to the link about a fourth axis located between the second axis and the third axis; (d) a third panel rotatably coupled at a first end to a second end of the second panel about a fifth axis, the fifth axis rotating about a fixed sixth axis when the ramp moves between the raised and lowered positions, and (e) a linkage operably coupled to the first panel, the linkage selectively rotating the first panel about the first axis.