The patent badge is an abbreviated version of the USPTO patent document. The patent badge does contain a link to the full patent document.
The patent badge is an abbreviated version of the USPTO patent document. The patent badge covers the following: Patent number, Date patent was issued, Date patent was filed, Title of the patent, Applicant, Inventor, Assignee, Attorney firm, Primary examiner, Assistant examiner, CPCs, and Abstract. The patent badge does contain a link to the full patent document (in Adobe Acrobat format, aka pdf). To download or print any patent click here.
Patent No.:
Date of Patent:
Jan. 19, 1993
Filed:
Jan. 24, 1992
Thorsten Teichmann, Bremen, DE;
Volker Allerding, Bremen, DE;
Deutsche Airbus GmbH, Hamburg, DE;
Abstract
A flap door for closing a hatch through a floor separating an upper and lower deck, e.g. in an aircraft, is equipped with a locking and unlocking mechanism in which a locking roller can be moved out of a locking position prior to any force applied to the door in an upward opening direction. For this purpose a bearing block is secured to the body of the flap door and a bell crank lever is journalled in the mounting block. One lever arm of the bell crank lever is constructed as a handle, while the other substantially shorter arm of the bell crank lever carries at its free end the locking roller. In its locking position the locking roller engages a spring biased locking claw. When the flap door is to be opened, the initial angular movement of the handle lever caused the roller to first disengage from the claw and then roll along a guide rail. When the unlocking is completed, the handle lever is in a substantially vertical position enabling the operator to apply an upwardly directed force to the flap door.