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:
Apr. 25, 1978
Filed:
Sep. 15, 1976
Applicant:
Inventors:
Emil Weiland, Hohenbrunn, DT;
Alois Schwarz, Putzbrunn, DT;
Karl-Heinz Mautz, Ottobrunn, DT;
Hubert Frommlet, Munich, DT;
Assignee:
Attorneys:
Primary Examiner:
Int. Cl.
CPC ...
B64C / ;
U.S. Cl.
CPC ...
416140 ; 416107 ; 416135 ;
Abstract
A rotor blade is connected to a rotor hub, for example, in a helicopter, by t least one pair of damping elements and by a blade connector bolt. The damping elements comprise metal discs and layers of elastomeric material arranged in sandwich fashion. The damping elements are arranged symmetrically relative to the rotor blade, as well as to the blade connector bolt. Furthermore, the damping elements are connected in a force transmitting manner to the rotor blade on the one hand and to the rotor hub on the other hand.