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. 02, 1991
Filed:
Aug. 30, 1989
Dale J Igram, Kokomo, IN (US);
Other;
Abstract
An airfoil having a device for changing the spacing between the airfoil's surface panels, thus to change the aerodynamic property of the airfoil. Considering the airfoil as in the case of the airfoil being a part of an airplane wing, the airfoil carries a flap panel along the wing's front edge, the flap panel being movably interconnected to the airfoil's lower panel, and is slidable along the airfoil's upper panel as the panel-spacing is changed, providing an effectively air-sealed relationship of the panels; and that controlled adjustability is provided by a control shaft which, by gearing of both upper panel's movable support means and of the flap panel support means, thus achieving their co-ordinated movement to change the airfoil shape.