Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Plessey Co Ltd
Original Assignee
Plessey Co Ltd
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Plessey Co LtdfiledCriticalPlessey Co Ltd
Priority to ES0278795ApriorityCriticalpatent/ES278795A1/en
Publication of ES278795A1publicationCriticalpatent/ES278795A1/en
Control valve device for hydraulic actuation means, of the type that performs the supply of liquid from a constant source to a hydraulic cylinder and its evacuation from said cylinder, characterized by comprising a valve element apt to open, when displaced from its neutral position, a flow regulation opening directed to or from a cylinder of driving means in such a way that the opening increases progressively with the displacement of the valve, and a flow valve subjected to the action of a spring which controls a variable opening that determines a return flow for the surplus fluid supplied, said flow valve being operated by the pressure drop in said variable opening of the control valve in such a way that it maintains constant said pressure drop by variation of said flow return. (Machine-translation by Google Translate, not legally binding)
ES0278795A1962-06-301962-06-30Control valve device for hydraulic drive media (Machine-translation by Google Translate, not legally binding)
ExpiredES278795A1
(en)
Device for actuating a hydraulic or pneumatic mechanism from two different points of command. (Machine-translation by Google Translate, not legally binding)