Unison ring self-centralizers and method of centralizing
US10184350B2 · kind B2 · utility
Assignee
Inventor
Key dates
| Filing date | Sep 28, 2015 |
| Grant date | Jan 22, 2019 |
| Priority date | — |
| Expiry date | May 29, 2037 |
Classification
- Technology area (CPC F)Mechanical Engineering; Lighting; Heating
- CPC primaryF05D2260/30
- WIPO fieldEngines, pumps, turbines
- WIPO sectorMechanical engineering
Abstract
A centralizing assembly for an engine having a plurality or rotatable vanes is provided including an engine casing and at least one unison ring disposed concentrically there about. A spacing gap is formed between the unison ring and the engine casing and is variable between a maximum spacing gap and a minimum spacing gap in response to thermal expansion of the engine casing. A centralizer element includes a plunger element movably mounted to unison ring and spanning the spacing gap. At least one conical spring washer is mounted to the plunger element and exerts a centralizing force through the plunger element onto the engine casing. The at least one conical spring washer maintains the centralizing force between the maximum spacing gap and the minimum spacing gap.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.