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AssigneeSauer-Danfoss Inc.
InventorsKenneth L. Oestreich, Wayne R. Anderson
Estimating the term…
An electrohydraulic valve pilot stage for controlling differential pressure is disclosed. The electrohydraulic valve pilot stage has a housing for protecting the valve; a first and second inlet capable of connection to fluid supplies; a first nozzle and a second nozzle fluidly connected to the inlets; a baseplate attached to the housing and the nozzles; a restraining member attached to the baseplate at a position between the first nozzle and the second nozzle; a pivot pin; a flapper restrained by the restraining member and having a first end and a second end, the flapper pivotably mounted on the pivot pin; and a null adjust pin mounted in a pivot pin contact capable position for adjusting the position of the ends of the flapper relative to the nozzles.
An electrohydraulic valve pilot stage for controlling differential pressure comprising:
A single-adjustment dual-null pressure setting for an electrohydraulic valve having a first nozzle and a second nozzle mounted on a baseplate, a restraining member attached to the baseplate between the first nozzle and the second nozzle, a flapper pivotably mounted on the restraining member, the flapper having a first end and a second end, the first end of the flapper capable of pivoting to a position such that the distance between the first end of the flapper and the first nozzle is less than the distance between the second end of the flapper and the second nozzle and the flapper capable of pivoting to a position such that the distance between the second end of the flapper and the second nozzle is less than the distance between the first end of the flapper and the first nozzle comprising:
Dependencies are inferred from the claim text.