Abstract: A retractable door device of a utility vehicle has a retractable door plate assembly and at least one retractable assembly. The retractable door plate assembly has multiple door plates of different sizes that are concatenated in descending order of size. The concatenated door plates are extendable and retractable. The retractable assembly has a retractor and a flexible elongated body. The retractor is mounted in the largest door plate. The flexible elongated body is mounted through the multiple door plates, and two ends of the flexible elongated body are respectively connected to the retractor and the smallest door plate. The flexible elongated body can be retracted to and extracted from the retractor.

Abstract: The invention is a safety bar for use in the cab of large earth moving equipment and which extends across the entryway of the cab. The safety bar is pivotally connected to the floor and has vertical freedom of rotation across the entryway. When in place across the entryway, the safety bar has a horizontal member connected to a vertical support member. The vertical member is attached to a hinge base plate adapted to allow vertical freedom of rotation. A latch is provided on the horizontal member to secure the horizontal member to a latch bar to block the entryway.