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:
Apr. 30, 1985
Filed:
Jan. 05, 1984
Lennart Nordstrom, Linkoping, SE;
Saab-Scania Aktiebolag, Linkoping, SE;
Abstract
The invention relates to an aircraft attitude indicator having a gyro controlled spherical display with delineations of regularly spaced meridians that maintain a vertical orientation and spaced parallels transverse to the meridians, one of which is an equator that divides the sphere into upper and lower hemispheres and corresponds to a horizon. The lower hemisphere has triangular pointer indicia, each symmetrical to a delineated meridian and with a base on a parallel and an apex proximal to the equator. The pointer indicia cooperate with a reference delineation that is relatively fixed with respect to the aircraft and substantially centered on the display. The pointer indicium nearest the reference designates the 'up' direction; those adjacent to it provide information about changes in aircraft attitude relative to 'up' that will result from possible maneuvers from the existing attitude.