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US 12,264,668 B2Granted
Flapper valve with common rotational direction
AssigneeHamilton Sundstrand Corporation
InventorsMyles Kelly, Andrew J. Thompson
Life of this patent
Estimating the term…
Abstract
A flapper check valve includes a valve seat body. Two flapper valve portions are each mounted on their own shaft to the valve seat body, and pivotable between open and closed positions. The flapper valve portions pivot in a common rotational direction to the open position and to the closed position. A fluid systems is also disclosed.
Claims13
A flapper check valve comprising:
- a valve seat body;
- two flapper valve portions each mounted on their own shaft to the valve seat body, and pivotable between open and closed positions, with said flapper valve portions pivoting in a common rotational direction to the open position and to the closed position;
- wherein a forward face at a first of the flapper valve portion facing a second of the flapper valve portions is straight and a forward face of the second of the flapper valve portions facing away from the first of the flapper valve portion is cylindrical;
- and
- wherein the shafts of the flapper valve portions are at an intermediate location in each of the flapper valve portions such that when in the open position, one end of each of the flapper valve portions is above the valve seat body and an opposed end of each of the flapper valve portions has pivoted in the common direction to be below the valve seat body.
2 more elements
A fluid system comprising:
- a compressor, a high pressure tap from the compressor section and a low pressure tap, the high pressure tap connected to a selectively closed and opened valve and into a chamber;
- the low pressure tap passing into a low pressure duct, and then to a flapper check valve, with a control for the control valve programmed to selectively opens and closes the control valve to provide the higher pressure air into the chamber, and the flapper check valve blocking the lower pressure tap from entering the chamber when the higher pressure air is delivered into the chamber, with the flapper check valve being allowed to open and deliver the lower pressure air into the chamber valve housing when the control valve is closed;
- and
- the flapper check valve having a valve seat body, two flapper valve portions each mounted on their own shaft to the valve seat body, and pivotable between open and closed positions, with said flapper valve portions pivoting in a common rotational direction to the open position and to the closed position.
1 more element
Dependencies are inferred from the claim text.