Invention Grant
- Patent Title: Rolling element cage for geared turbofan
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Application No.: US15132650Application Date: 2016-04-19
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Publication No.: US10767753B2Publication Date: 2020-09-08
- Inventor: William G. Sheridan
- Applicant: United Technologies Corporation
- Applicant Address: US CT Farmington
- Assignee: Raytheon Technologies Corporation
- Current Assignee: Raytheon Technologies Corporation
- Current Assignee Address: US CT Farmington
- Agency: Carlson, Gaskey & Olds, P.C.
- Main IPC: F16H57/04
- IPC: F16H57/04 ; F16H57/08 ; F02C3/107 ; F16C33/66 ; F02K3/02 ; F16H1/28 ; F16C19/26

Abstract:
A gear system for a turbofan engine assembly includes a sun gear rotatable about an engine centerline, a non-rotatable ring gear, and a rotating carrier that drives a fan. A plurality of planet gears is intermeshed between the sun gear and the ring gear. A rolling element bearing assembly supports rotation of the planet gear on the carrier. The rolling element bearing assembly includes a rolling element between an inner race and an outer race separated by a cage. A first passage for lubricant through the planet gear. A second passage is in communication with the first passage for communicating lubricant through the inner race to an interface between the inner race and the cage. A geared turbofan engine is also disclosed.
Public/Granted literature
- US20160377167A1 ROLLING ELEMENT CAGE FOR GEARED TURBOFAN Public/Granted day:2016-12-29
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