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:
Feb. 14, 2012
Filed:
Jun. 24, 2008
Stephane Jean Joseph Baumhauer, Massy, FR;
Jerome Alain Dupeux, Vaux le Penil, FR;
Francois Maurice Garcin, Paris, FR;
Jean-pierre Francois Lombard, Pamfou, FR;
Stephane Jean Joseph Baumhauer, Massy, FR;
Jerome Alain Dupeux, Vaux le Penil, FR;
Francois Maurice Garcin, Paris, FR;
Jean-Pierre Francois Lombard, Pamfou, FR;
SNECMA, Paris, FR;
Abstract
A hollow shaft of a turbomachine including a cylindrical wall with an inner surface portion and at one end a member for attachment to a rotor disk of the turbomachine is disclosed. The shaft also includes a damping device wherein at least one vibration-damping laminate is attached to the inner surface portion. The laminate includes at least one layer of viscoelastic material in contact with the surface portion and a counterlayer of rigid material.