Invention Grant
- Patent Title: Spring loaded sleeve valve with controlled closing force
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Application No.: US17484078Application Date: 2021-09-24
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Publication No.: US11703128B2Publication Date: 2023-07-18
- Inventor: Connor Berube , Myles R. Kelly
- Applicant: Hamilton Sundstrand Corporation
- Applicant Address: US NC Charlotte
- Assignee: Hamilton Sundstrand Corporation
- Current Assignee: Hamilton Sundstrand Corporation
- Current Assignee Address: US NC Charlotte
- Agency: Carlson, Gaskey & Olds, P.C.
- Main IPC: F16K1/12
- IPC: F16K1/12 ; F02C6/08 ; F02C9/18 ; F04D27/02

Abstract:
A sleeve valve includes an inlet port and an outlet port. A sleeve is movable to close flow from the inlet port to the outlet port. The sleeve valve has a sleeve biased to an open position at which it allows flow from the inlet port to the outlet port by a spring. Pressure in a pressure chamber urges the sleeve to a closed position at which it blocks flow from the inlet port to the outlet port. A line pressure conduit communicates the fluid chamber into the pressure chamber. Pressurized air is supplied to the pressure chamber through a selectively closed valve. The selectively closed valve is opened to allow the flow of high pressure air from a pressure source into the pressure chamber to move the sleeve to a closed position. A bleed air system for a gas turbine engine is also disclosed.
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