| 摘要 |
A retractable, two tread flip-over step a unit for access to a vehicle comprises a first step or tread pivotally mounted k on a vehicle, with a second step or tread d attached to the first. Two pairs of pivoting links e, f are attached to each step, so that the first step may be folded under the second step for storage. The unit may then be pivoted upwards using a pair of links j into the step well b for storage. The unit may be deployed automatically when the door is opened. |
