Gas turbine engine generator switchable drive

US8943839B2 · US · B2

Patent metadata
FieldValue
Publication numberUS-8943839-B2
Application numberUS-201113218863-A
CountryUS
Kind codeB2
Filing dateAug 26, 2011
Priority dateAug 26, 2011
Publication dateFeb 3, 2015
Grant dateFeb 3, 2015

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  2. Abstract

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Abstract

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A gas turbine engine includes a first spool, a first gear system connected to and driven by the first spool, a second spool, and a second gear system connected to and driven by the second spool. A first starter-generator has a first shaft with a switchable coupling connected to the first shaft. The switchable coupling selectively couples the first starter-generator to the first gear system when the switchable coupling is in a first position and selectively couples the first starter-generator to the second gear system when the switchable coupling is in a second position.

First claim

Opening claim text (preview).

The invention claimed is: 1. A gas turbine engine comprising: a first spool; a first gear system connected to and driven by the first spool; a second spool; a second gear system connected to and driven by the second spool; a first starter-generator having a first shaft with splines; and a splined collar connected to the first shaft for selectively coupling the first starter-generator to the first gear system when the splined collar is in a first position and selectively…

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What does patent US8943839B2 cover?
A gas turbine engine includes a first spool, a first gear system connected to and driven by the first spool, a second spool, and a second gear system connected to and driven by the second spool. A first starter-generator has a first shaft with a switchable coupling connected to the first shaft. The switchable coupling selectively couples the first starter-generator to the first gear system when…
Who is the assignee on this patent?
Merry Brian D, Suciu Gabriel L, United Technologies Corp
What technology area does this patent fall under?
Primary CPC classification F02C7/32. Mapped technology areas include Mechanical Engineering.
When was this patent published?
Publication date Tue Feb 03 2015 00:00:00 GMT+0000 (Coordinated Universal Time) (B2). Legal status and post-grant events are not shown on this page.
What related patents are in patentsdb?
We list 8 related publications on this page (citations in our corpus or others sharing the same primary CPC).