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US 2013/0075642 A1Published application
Rotary Control Valve
AssigneeGoodrich Actuation Systems Limited
InventorsArnauld Roger Edmond Hervieux, Laurent Patrice Donadille
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AssigneeGoodrich Actuation Systems Limited
InventorsArnauld Roger Edmond Hervieux, Laurent Patrice Donadille
Estimating the term…
A control valve comprises a first spool 22, a second spool 24 encircling at least part of the first spool 22 and angularly moveable relative thereto, and a sleeve 32 encircling at least part of the second spool 24, the second spool 24 being angularly moveable relative to the sleeve 32, the first and second spools 22, 24 having first and second series of ports 28, 30 registrable with one another, depending upon the relative angular positions of the first and second spools 22, 24, to control communication between at least a pressure line 16, a return line 18 and a control line 50 provided in or connected to the sleeve 32, the second spool 24 and the sleeve 32 having third and fourth series of ports 66, 68, axially spaced from the first and second series of ports 28, 30 and registrable with one another, depending upon the relative angular positions of the second spool 24 and the sleeve 32, to control communication between at least the control line 50 and the return line 18, and latch means 56 operable to resist movement of the second spool 24 relative to the sleeve 32.
A rotary control valve comprising a first spool, a second spool encircling at least part of the first spool and angularly moveable relative thereto, and a sleeve encircling at least part of the second spool, the second spool being angularly moveable relative to the sleeve, the first and second spools having first and second series of ports registrable with one another, depending upon the relative angular positions of the first and second spools, to control communication between at least a pressure line, a return line and a control line provided in or connected to the sleeve, the second spool and the sleeve having third and fourth series of ports, axially spaced from the first and second series of ports and registrable with one another, depending upon the relative angular positions of the second spool and the sleeve, to control communication between at least the control line and the return line, and latch means operable to resist movement of the second spool relative to the sleeve.
Dependencies are inferred from the claim text.