公开(公告)号：US20190072000A1

公开(公告)日：2019-03-07

申请号：US16100251

申请日：2018-08-10

Applicant: ROLLS-ROYCE plc

Inventor： Oliver JONES ,  Miles HAWKYARD ,  Adrian R. M. WALKER

IPC: F01D25/24 ,  F04D29/64 ,  F16B5/02

Abstract: A bush having a neck portion (33) for inserting into an aperture of one or both of two components to be fastened together, a radially extending shoulder portion (34) having a rear face (34a) adjacent the neck portion (33) an opposite front face (34b) and a radially outer face (34c) extending between the rear face (34a) and the front face (34b), one or more ventilation slots (36) provided in the rear face extending from a junction between the rear face (34a) and the neck portion (33) whereby, in use, to provide an escape route for air caught between the bush and a component.