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:
May. 03, 1983
Filed:
Sep. 08, 1980
Applicant:
Inventors:
Donald E Graham, Phoenix, AZ (US);
Raymond A Nelson, Phoenix, AZ (US);
Edmond E Olive, Phoenix, AZ (US);
Assignee:
Sperry Corporation, New York, NY (US);
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
G06F / ; G05D / ;
U.S. Cl.
CPC ...
364434 ; 244178 ; 244181 ; 318584 ;
Abstract
In an automatic flight control system of the type having automatic stabilizer trim control, the long term, constant altitude cruise trim threshold limits which alter the maximum and minimum pull-in/drop-out deflection of the elevator relative to the stabilizer minimize the steady-state downward deflection of the elevator, thereby reducing unnecessary aerodynamic drag and realizing significant savings in fuel costs.