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US 4,286,770 AGranted
Deformable plug
AssigneeCessna Aircraft Company
InventorAlan D. Jackson
Life of this patent
Estimating the term…
Abstract
A removable plug used for setting land timming of a control valve spool or spring loading in relief valves. The plug has deflectable contact points which deform in its plastic range against the harder surface of the valve body as the plug is screwed into the valve body to position the spool for precise and repeatable land timming.
Claims11
In a fluid control valve assembly including a valve element positioned in a bore in a valve body, the improvement comprising:
- a plastically deformable plug means threadably received in said valve body for axial movement with respect to said bore;
- stop means on the plug limiting axial movement of the valve element in said bore;
- and
- a deformable contact area on said plug means which comes in contact with the valve body as the plug is moved axially in said bore, said area deforming within its plastic range while providing sufficient axial movement of the plug means to set the flow rates of the valve element.
1 more element
Dependencies are inferred from the claim text.