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:
Nov. 22, 1988
Filed:
Jun. 19, 1987
Ulrich Pohl, Bremen, DE;
MBB GmbH, Bremen, DE;
Abstract
Flaps mounted on an carriage are being protracted and retracted in relation to a aircraft wing of which the flap is a part by a drive mechanism which is to be provided for variable torque and torque limiting and, if necessary, fixing and holding the position of the flap and its drive carriage in case of failure. A branching gear is driven for the common shaft which drives the flaps of one wing and there are separate transmission paths which include in each instance output shafts from the branching gear, crank drives and thrust rods. One of the thrust rod is directly connected to the flap carrying carriage and the other one indirectly through a load switch and a connecting rod; in addition one of the output shafts of the branching gear is lead into a delta alpha brake having as a second input, the output of the principle drive shaft. The delta alpha brake stops motion of the flap carrying carriage in case there is an angle difference among its input shafts that exceeds a particular limit.