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:
Jul. 16, 1985
Filed:
Dec. 09, 1983
Applicant:
Inventors:
Frank Bramwell, Hamden, CT (US);
Roderick A MacLennan, Stratford, CT (US);
Assignee:
United Technologies Corporation, Hartford, CT (US);
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
B64C / ;
U.S. Cl.
CPC ...
244232 ; 7450 / ; 244 1721 ;
Abstract
A flight control system for a helicopter tail rotor having a semicircular quadrant 18 with bell cranks 36, 40 mounted on either end of the quadrant and flexible control cables 20, 22 connected to each bell crank. The bell cranks are spring loaded in opposition to cable tension, and a fixed abutment 72 provides a reaction against the bell crank springs in the event of a cable severance. The quadrant works against the spring loading of one bell crank in the event of breakage of the opposite control cable and is centered by the spring loading of both bell cranks if both cables are broken.