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. 11, 2003
Filed:
Apr. 05, 2002
Frederick E. To, Northampton, GB;
Res Kammer, Mirchel, CH;
Prospective Concepts AG, Zollikon, CH;
Abstract
The additional device according to the invention for floats for seaplanes and floatplanes comprises four airtight bladders ( ) to which compressed air can be applied, and which extend along the float and rest on side surfaces ( ) of the float, which essentially consists of a box ( ). The bladders ( ) are composed of a flexible material with little expansion capability or an elastomer material, and are entirely covered with an elastic and watertight textile skin ( ). In the state when compressed air is applied, the edges of the box ( ), that is to say the side edges ( ) and the keel edge ( ), are smoothed. Thus, as soon as the aircraft has become airborne, the drag coefficient c of the float can be considerably reduced. The compressed air is released for the aircraft to land on and take off from water, so that the edges ( ) can produce their effect for directional stability (keel edge ( )) and in order to prevent the Coanda effect (side edges )).