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:
Sep. 30, 2003
Filed:
Jun. 05, 2000
Manfred Fischer, Markdorf, DE;
Bernard Hunold, Friedrichshafen, DE;
Hans Håse, Friedrichshafen, DE;
Martin Messmer, Friedrichshafen, DE;
ZF Luftfahrttechnik GmbH, Calden, DE;
Abstract
The invention relates to a transmission with torque division for a helicopter rotor drive. In a manner known per se, in the transmission a first power transmission branch has a first rotatable driving pinion ( ) which is in constant engagement with a first toothed wheel ( ) on the output side. At least one other power transmission branch has one other driving pinion ( ) co-axial to the first driving pinion ( ) and in constant engagement with one other toothed wheel ( ) on the output side co-axial to the first toothed wheel ( ) on the output side. One torsionally elastic member is arranged in the torque flow of each power transmission branch. The torsion-resistance of the torsionally elastic members determines the load proportions of the power transmission branches. The inventive transmission makes possible a high power density with small installation space, light weight and a small number of functional elements.