US 11,746,877 B2
High strength vibration damping components
Mark E. Bartolomeo, Brownsburg, IN (US)
Assigned to Rolls-Royce Corporation, Indianapolis, IN (US)
Filed by Rolls-Royce Corporation, Indianapolis, IN (US)
Filed on Dec. 11, 2019, as Appl. No. 16/710,855.
Prior Publication US 2021/0180675 A1, Jun. 17, 2021
Int. Cl. F16H 55/14 (2006.01); F16H 55/17 (2006.01); B33Y 80/00 (2015.01); B33Y 70/00 (2020.01); C25D 5/12 (2006.01); C25D 3/56 (2006.01); C25D 5/18 (2006.01); C25D 7/00 (2006.01); B33Y 40/20 (2020.01); B33Y 10/00 (2015.01)
CPC F16H 55/14 (2013.01) [B33Y 40/20 (2020.01); B33Y 70/00 (2014.12); B33Y 80/00 (2014.12); C25D 3/562 (2013.01); C25D 5/12 (2013.01); C25D 5/18 (2013.01); C25D 7/00 (2013.01); F16H 55/17 (2013.01); B33Y 10/00 (2014.12)] 17 Claims
OG exemplary drawing
 
1. A mechanical component comprising:
a core substrate comprising a polymeric material formed in the shape of a gear, wherein the gear comprises a body and gear teeth extending from the body, wherein the body defines a web structure comprising a plurality of truss supports and defines a resonance damping cavity, wherein the resonance damping cavity is an annular hollow chamber surrounding an inner rim and is disposed between the web structure and the gear teeth, wherein the resonance damping cavity is configured to damp a vibration in the component at a selected frequency or range of frequencies; and
a nano-crystalline coating on at least a portion of the gear teeth.