Adjustable staircase and height-adjustable platform with adjustable staircase

摘要

An adjustable staircase includes an upper stair, a lower stair, a first bar and a second bar. The vertical distance between the upper stair and the lower stair is adjustable. Also, each bar is coupled to each of the upper and lower stairs, and the first bar is configured to function as a guard. As a result, the first bar blocks a pinch point between the first and second bars.

主权项

1. A height-adjustable platform comprising:
an adjustable staircase including:
an upper stair;a lower stair;a first bar coupled to a front portion of each of the upper and lower stairs and configured to function as a first guard; anda second bar coupled to a rear portion of each of the upper and lower stairs, wherein a vertical distance between the upper stair and the lower stair is adjustable, no pinch point is formed between the first bar and the second bar, the first bar extends across at least a portion of the second bar, and the second bar is located to the inside of the first bar.