Invention Grant
- Patent Title: Method to supply oil to a multi-film damper
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Application No.: US16657140Application Date: 2019-10-18
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Publication No.: US10947863B2Publication Date: 2021-03-16
- Inventor: Richard Ivakitch , David Beamish
- Applicant: PRATT & WHITNEY CANADA CORP.
- Applicant Address: CA Longueuil
- Assignee: PRATT & WHITNEY CANADA CORP.
- Current Assignee: PRATT & WHITNEY CANADA CORP.
- Current Assignee Address: CA Longueuil
- Agency: Norton Rose Fulbright Canada LLP
- Main IPC: F16C27/04
- IPC: F16C27/04 ; F01D25/16 ; F02C7/06

Abstract:
A multi-film oil damper has a housing defining an annular damper cavity having an oil inlet in communication with a source of pressurized oil. A plurality of nested damper rings is disposed within the annular damper cavity, the plurality of nested damper rings defining a plurality of squeeze film annuli. Spacer rings are disposed adjacent opposed ends of the damper rings. A contact surface of the spacer rings extends radially beyond a first cylindrical surface of an associated damper ring for engaging a second cylindrical surface of an adjacent damper ring. Recesses are defined in the second cylindrical surface of the damper rings, the recesses fluidly communicating between the squeeze film annuli and the oil inlet.
Public/Granted literature
- US20210025291A1 METHOD TO SUPPLY OIL TO A MULTI-FILM DAMPER Public/Granted day:2021-01-28
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