Single piece evacuation system for aircraft or the like

• US 4,846,422 A
• Filed: 05/14/1984
• Issued: 07/11/1989
• Est. Priority Date: 05/14/1984
• Status: Expired due to Term

• Current Assignee: B F Goodrich Company The 277 Park Avenue New York NY
• Original Assignee: The B.F.Goodrich Company
• Inventors: Fisher, John M.
• Primary Examiner(s): BAREFOOT, GALEN L
• Application Number:
  US06/609,618
• Time in Patent Office: 1,884 Days
• Field of Search: 244/137 P, 244/DIG. 2, 182/48, 193/25 B
• US Class Current: 244/137.2
• CPC Class Codes: B64D 25/14 Inflatable escape chutes

Abstract

An improved inflatable over-the-wing evacuation slide. The slide is provided with an inflatable wing ramp section projecting from the foot of the wing exit door to a point on the aircraft wing remote from the door. The wing ramp section also includes a generally flat upper or walkway surface and a lower face surface projecting in a tapered contact with the sloping aircraft wing. It also includes a pair of inflatable guard rails attached to the side margins of the inflatable wing ramp. The wing ramp then includes a right angle turn remote from the exit door and continues to terminate in an extended section proceeding from the wing to the ground. A unique support system is provided on the underside of the central portion of the extended ramp consisting of inflatable portions shaped to provide support to the slide regardless of the position of the trailing edges of the wing flaps. A continuous inflated floor configuration is thus provided which presents a smooth uninterrupting walking surface to the steeper slide section of the unit. The walking surface eliminates the joint between the two distinct inflatables sections, on the wing and beyond, which can, at times, present a tripping point for the people evacuating the aircraft when using the inflatable device.

Claims

1. An inflatable slide device for emergency evacuation including main tubes defining a slide surface extending from a head end of the slide to a foot end of the slide, the upper portion of said tubes extendable horizontally from an exit door to a remote point, the intermediate section of said tubes extending at a right angle from said upper portion and angling downwardly toward the ground and the lower section of said tubes extending to the ground, said main tubes extend integrally as a unit from said head end to said ground, said slide also including a plurality of supports beneath said tubes at the upper section and intermediate section for being supported by an aircraft wing and a plurality of additional supports beneath said tubes at the upper part of the lower section for providing additional rigidity to said tubes through the lower section.

2. The slide as set forth in claim 1 wherein said first mentioned supports extend parallel with said tubes.

3. The slide as set forth in claim 1 wherein said additional supports extend transversely across said tubes.

4. The slide as set forth in claim 1 and further including a girt permanently coupling the horizontal upper section of the slide with the lower surface of the exit door.

5. The slide as set forth in claim 1 and further including inflatable hand rails extending upwardly from the peripheral main tubes throughout the upper and intermediate sections except adjacent the exit door.

6. The slide as set forth in claim 5 wherein the handrail includes a ditching door, separate from the remainder of the handrail, adjacent the exit door but in a direction opposite the intermediate section.

7. An inflatable slide device for emergency evacuation including main tubes defining a slide surface extending from a head end of the slide to a foot end of the slide, the upper portion of said tubes extendable horizontally from an exit door to a remote point, the intermediate section of said tubes extending at a right angle from said upper portion and angling downwardly toward the ground and the lower section of said tubes extending to the ground, said slide also including a plurality of supports parallel with said tubes beneath said tubes at the upper section and intermediate section for being supported by an aircraft wing and a plurality of additional supports extending transversely across said tubes beneath said tubes at the upper part of the lower section for providing additional rigidity to said tubes through the lower section.