Accession Number:

ADD015695

Title:

Adjustable Height Stairway.

Descriptive Note:

Patent application, filed 14 Sep 92,

Corporate Author:

DEPARTMENT OF THE ARMY WASHINGTON DC

Personal Author(s):

Report Date:

1992-09-14

Pagination or Media Count:

22.0

Abstract:

The invention is an adjustable height stairway having two parallel elongate lower frame members and two parallel elongate upper frame members swingable on a base. The upper frame members have wave-like edges that can fit with complimentary wave-like edges on the lower frame members. A set of steps parallel to the base has pivotal connections to each frame member at peaks of the wave-like edges. At a first angular position, the stairway is in a collapsed configuration wherein the pivotal connections are coplanar and the steps lie in a common plane to form a runway. In a second angular position the stairway is in an expanded configuration form a ladder or set of stairs.

Subject Categories:

  • Combat Vehicles
  • Computer Programming and Software

Distribution Statement:

APPROVED FOR PUBLIC RELEASE