Invention Grant
- Patent Title: Dual-concentric control valve with direct drive control and failed motor protection
-
Application No.: US17509048Application Date: 2021-10-24
-
Publication No.: US11993362B2Publication Date: 2024-05-28
- Inventor: Brady Garrett Atkins , Robert Paul Reynolds , Carlos Alexander Fenny , Charles Eric Covington
- Applicant: Textron Innovations Inc.
- Applicant Address: US RI Providence
- Assignee: Textron Innovations Inc.
- Current Assignee: Textron Innovations Inc.
- Current Assignee Address: US RI Providence
- Agency: Lightfoot & Alford PLLC
- Main IPC: B64C11/38
- IPC: B64C11/38 ; B64C27/64 ; F01B9/00 ; F01B25/10 ; F16K11/20 ; F16K31/04

Abstract:
Systems and methods include providing an aircraft with a direct drive dual-concentric valve (D3V) having a body, an outer secondary spool coaxially located within a bore of the body and linearly displaceable relative to the body, an inner primary spool coaxially located within a bore of the secondary spool and linearly displaceable relative to the secondary spool and the body. A plurality of piezo stacks is coupled to a first end of the primary spool, and applying a voltage to at least one of the piezo stacks causes an output stroke of the plurality of the piezo strokes for displacing the primary spool. The secondary spool is displaced together with the primary spool relative to the body if displacement of the primary spool relative to the secondary spool cannot occur.
Information query