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. 20, 1984
Filed:
Jul. 14, 1982
Wilfred E Boehringer, Fullerton, CA (US);
McDonnell Douglas Corporation, Long Beach, CA (US);
Abstract
A flight control surface coupling system which provides a two-element drive coupling between two control surface segments. The first element is a torsion bar that has adequate spring rate to suppress surface flutter yet soft enough to deflect and function as a low load compliance element between sets of drive actuators. The second element is a drive coupling that permits the two surface segments to move freely within its stops. The stops are spaced to allow easy determination of out-of-rig conditions and small enough to provide an effective drive to move one segment through the second segment with a single actuator. Structural fatigue loads are greatly reduced without sacrificing surface positionability.