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:
Jan. 08, 1980
Filed:
Oct. 03, 1977
Applicant:
Inventor:
Hans Derschmidt, Putzbrunn, DE;
Assignee:
Messerschmitt-Boelkow-Blohm GmbH, Munich, DE;
Attorneys:
Primary Examiner:
Int. Cl.
CPC ...
B64C / ;
U.S. Cl.
CPC ...
4161 / ; 416141 ;
Abstract
The present rotor head for a helicopter is free of flapping hinges and free of drag or lagging hinges. The rotor blades or wings are connected to the rotor head by a plurality of connecting plates which are flexible to bending moments. These plates are inserted into the blade roots of the helicopter wings and connected to the rotor head proper. The planes defined by these connecting plates intersect in the axis of the rotor blades or wings.