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. 18, 2003
Filed:
Sep. 06, 2001
ZF Luftfahrttechnik GmbH, Calden, DE;
Abstract
A helicopter with rotor blades rotatably connected to a rotor head. The rotor head is non-rotatably connected with a rotor mast ( ) pivoted in a transmission housing and driven by a transmission via at least one driving mechanism. A pitch of the rotor blades, relative to a plane of rotation of the rotor blades, is controlled via a swash plate, control rods ( ) and via individual actuators ( ) allocated to each individual rotor blade. The control rods ( ) and the actuators ( ) are mounted in the rotor mast ( ) and the rotor head and those components act, via a mixing lever ( ) and a control rod ( ), upon a pivoted arm ( ) which adjusts the pitch of the rotor blade. The control devices of the rotor blades do not interfere with the air flow, are affected only to a limited extent by centrifugal forces and additional stresses, and are also protected against influences of the weather.