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:
Mar. 25, 2003
Filed:
May. 01, 2000
Andreas Reinhard, Zürich, CH;
Sepp Steffen, Altbüron, CH;
Hans-Ulrich Ammann, Langenthal, CH;
Prospective Concepts AG, Zollikon, CH;
Abstract
A take-off device includes a telescopic arrangement of three pipes arranged in a frame. The telescopic arrangement can pivot to a limited extent. The frame is mounted on a horizontal axis running through a center of gravity of the device and a centroidal axis of a lift of an airplane wing, whereby the frame can pivot around the axis. Forces exerted between the telescopic arrangement and the frame are transmitted via a bushing wedged on an outer pipe of the three pipes. A compressed gas accumulator can be opened by means of an actuating pressure signal, whereupon the telescopic arrangement extends outward. A bottom portion of an innermost tube knocks against a fixed point on the ground, which allows the airplane to accelerate to a lift-off speed. After the telescopic arrangement has extended outward, the telescopic arrangement retracts inward using a compressed gas stored in a pressure chamber.