Invention Grant
- Patent Title: Planetary gearing and planet pin for a planetary gearing
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Application No.: US16198327Application Date: 2018-11-21
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Publication No.: US10767755B2Publication Date: 2020-09-08
- Inventor: Michael Nique , Paul Gorenz , Christopher Campbell , Frank Wagner , Mark Spruce , Daren Ashmore
- Applicant: Rolls-Royce Deutschland Ltd & Co KG , Rolls-Royce plc
- Applicant Address: DE Blankenfelde-Mahlow GB London
- Assignee: ROLLS-ROYCE DEUTSCHLAND LTD & CO KG,ROLLS-ROYCE PLC
- Current Assignee: ROLLS-ROYCE DEUTSCHLAND LTD & CO KG,ROLLS-ROYCE PLC
- Current Assignee Address: DE Blankenfelde-Mahlow GB London
- Agency: Shuttleworth & Ingersoll, PLC
- Agent Timothy J. Klima
- Priority: com.zzzhc.datahub.patent.etl.us.BibliographicData$PriorityClaim@f961088
- Main IPC: F16H57/08
- IPC: F16H57/08 ; F02C7/36 ; F16H57/04 ; F16C33/10 ; F16C17/02 ; F16C23/04 ; F16H1/28 ; F01D25/18

Abstract:
A planetary gearing includes a sun gear rotating about a rotation axis and driven by a sun shaft; planet gears driven by the sun gear; a ring gear engaging the planet gears; and a plurality of planet pins that respectively include an outer-side abutment surface having an axially forward end and an axially rearward end. Respectively, one planet pin is arranged inside a planet gear, and the planet pin and the planet gear form a lubricated journal bearing. At an axially forward face side and/or axially rearward face side, each planet gear forms a recess that extends inside the planet gear starting from the face side. The planet pins respectively form a crowning at their abutment surface such that their outer diameter decreases from a maximum outer diameter towards at least one axial end of the abutment surface, and has a minimum at the axial end.
Public/Granted literature
- US20190162294A1 PLANETARY GEARING AND PLANET PIN FOR A PLANETARY GEARING Public/Granted day:2019-05-30
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