EP 0000445 A1 19790124 - Servo valve.
Title (en)
Servo valve.
Title (de)
Servoventil.
Title (fr)
Servo valve.
Publication
Application
Priority
US 81546777 A 19770713
Abstract (en)
A servo valve having a pilot control balance network in which a variable orifice (104) is established between the main control spool (14) an the actuator member (96) of a force motor (94) wherein movement of said member causes the main spool to assume a new corresponding position that re-establishes the balance in said network.
IPC 1-7
IPC 8 full level
F15B 13/043 (2006.01)
CPC (source: EP)
F15B 13/0438 (2013.01)
Citation (search report)
- GB 1268767 A 19720329 - DOWTY TECHNICAL DEV LTD
- US 3012579 A 19611212 - MEULENDYK JOHN W
- US 2977985 A 19610404 - ERICSON DONALD W, et al
- US 2972999 A 19610228 - HAYNER PAUL F
- [D] US 2973746 A 19610307 - JUPA EDWARD C
- OLEODINAMICA-PNEUMATICA, vol. 17, no. 9, 1976, edited by Tecnicke Nuove, Milano, Italy, JAMES T. JOHNSON: "Servosistemi elettroidraulici", Pages 146,147.
Designated contracting state (EPC)
DE FR GB SE
DOCDB simple family (publication)
EP 0000445 A1 19790124; EP 0000445 B1 19821124; CA 1093426 A 19810113; DE 2862092 D1 19821230; JP S5420275 A 19790215; JP S61116205 U 19860722
DOCDB simple family (application)
EP 78300136 A 19780710; CA 307244 A 19780712; DE 2862092 T 19780710; JP 18852185 U 19851209; JP 8464178 A 19780713