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US 5,150,876 AGranted
Servo valve
OwnerGerald W. Pickardinventor
Life of this patent
Estimating the term…
Abstract
A servo valve comprises an electrical winding, an armature, flapper means fixed to the armature and a feedback arrangement including a radially extending plug fixed to an end of one of the arms of the flapper arrangement. The plug is located within the fluid flow of a supply bore and is deflected according to the flow. This deflection is passed back to the flapper to vary its position relative to the jet pipe nozzles thus offering feedback control.
Claims2
A servo valve for controlling a flow of fluid in a bore including:
- at least one electrical winding;
- an armature;
- a flapper means securely fixed to the armature;
- and
- a feedback arrangement comprising a radially extending plug attached to the flapper means;
- wherein the flapper means has two arms which protrude outwardly from the armature, the ends of which arms are spatially independent from one another and to the end of one of which arms the feedback arrangement is attached such that said plug is located within a tapering portion of said bore, fluid flow in the bore causing deflection of the plug and the end of the other arm comprises a valve.
3 more elements
Dependencies are inferred from the claim text.