Door/hatch actuation

US5018687A · kind A · utility

Assignee

• MBB GmbH · DE

Inventors

• Artur Kupfernagel · Stuhr, DE
• Dieter Nitsch · Delmenhorst, DE

Key dates

• Filing date: Mar 1, 1989
• Grant date: May 28, 1991
• Expiry date: Mar 1, 2009

Classification

• Technology area (CPC B): Performing Operations; Transporting
• CPC primary: B64C1/1415
• WIPO field: Transport
• WIPO sector: Mechanical engineering

Abstract

A mechanically operable actuating device for opening towards the outside and closing a cargo hatch or freight door in the fuselage of an aircraft comprises two hinges for connecting an upper side of the door or hatch to the fuselage; a first swivel joint floatingly mounts the upper end of a coupling member to a reenforcing part in the upper portion of the hatch or door; a second swivel joint floatingly connects a rocking arm to a hatch or door frame of the fuselage; a third swivel joint connects the rocking arm to the lower end of the coupling member; a fourth swivel joint connects one end of a gas pressure spring to the rocking arm so that the spring extends substantially parallel to the coupling member; and a fifth swivel joint connects an opposite end of the spring also to the upper end of the coupling member.