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. 20, 2007
Filed:
Dec. 13, 2003
Applicants:
Ulrich Denecke, Neubiberg, DE;
Gerald Kuntze-fechner, Waakirchen, DE;
Horst Bansemir, Munich, DE;
Stefan Emmerling, Neubiberg, DE;
Inventors:
Ulrich Denecke, Neubiberg, DE;
Gerald Kuntze-Fechner, Waakirchen, DE;
Horst Bansemir, Munich, DE;
Stefan Emmerling, Neubiberg, DE;
Assignee:
Eurocopter Deutschland GmbH, Donauwoerth, DE;
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
B64C 11/12 (2006.01);
U.S. Cl.
CPC ...
Abstract
A twist element for a bearingless rotor is made mostly of composite fiber material and has a cross section with a substantially symmetric, flattened shape that has approximately the contour of a horizontal, central section of a double cone. In addition, a bearingless rotor having at least one such twist element, and a rotorcraft, particularly a helicopter, having at least one rotor with at least one such twist element are provided.