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US 5,404,791 AGranted
Pressure regulation device for a hydraulic system
AssigneeAlliedSignal Europe Services Techniques
InventorGilbert Kervagoret
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AssigneeAlliedSignal Europe Services Techniques
InventorGilbert Kervagoret
Estimating the term…
The invention relates to a pressure regulation device for a hydraulic system comprising at least one generator (30) of fluid under pressure, a hydraulic actuator (28) and a reservoir (32) of fluid under low pressure, and including an electrovalve controlled by a computer and comprising in a casing (9) an electrical coil (10) and a sliding magnetic core (12) controlling a slide valve (16) sliding in a bore provided in a body (18), the slide valve (16) determining two chambers (22, 36) arranged on either side of the slide valve (16) in the bore, the slide valve comprising a hydraulic chamber (40) communicating with the hydraulic actuator (28) and determining a reaction force adding itself to the force produced by the coil (10), against a prestressed resilient means (20). The hydraulic chamber (40) is delimited by a bore (41) made in the slide valve (16), an end part (43a) of a sleeve (43), a rod (42) and a cup (60) for leaktightness between the rod (42) and the bore (41) of the slide valve (16).
A pressure regulation device for a hydraulic system comprising at least one generator of fluid under pressure, a hydraulic actuator and a reservoir of fluid under low pressure, and including an electrovalve controlled by a computer and comprising in a casing an electrical coil and a sliding magnetic core controlling a slide valve sliding in a bore provided in a body, the slide valve determining two chambers arranged on either side of the slide valve in the bore, the slide valve comprising a hydraulic chamber communicating with the hydraulic actuator and determining a reaction force added to the force produced by the coil and against prestressed resilient means, characterized in that the hydraulic chamber is delimited by a bore in the slide valve, an end part of a sleeve, a rod and a cup for leaktightness between the rod and the bore of the slide valve.
Dependencies are inferred from the claim text.