EP 0018832 A3 19810513 - IMPROVEMENTS IN OR RELATING TO POSITIONERS
Title (en)
IMPROVEMENTS IN OR RELATING TO POSITIONERS
Publication
Application
Priority
GB 7915693 A 19790504
Abstract (en)
[origin: EP0018832A2] The invention provides a positioner by which a member (1), which may be massive and, for instance, a part of a valve, may be moved to a pre-determined position. The movement of the member (1) is controlled by a pneumatic valve (2) that is connected to a lever (14). The lever (14) is pivoted at two locations (13a and 20) which can both be moved transversely to the lever (14). By moving the first location (13a) the pneumatic valve (2) is open to move the member (1) and movement of the member (1) moves the second location (20) to tilt the lever 14 back to a position in which the pneumatic valve (2) is again closed.
IPC 1-7
IPC 8 full level
F15B 13/16 (2006.01)
CPC (source: EP)
F15B 13/16 (2013.01)
Citation (search report)
- US 3899956 A 19750819 - OLSEN ZENNY
- US 2570624 A 19511009 - WYCKOFF RALPH D
- US 2781744 A 19570219 - WILLIAMS RAY S
Designated contracting state (EPC)
BE GB IT NL SE
DOCDB simple family (publication)
EP 0018832 A2 19801112; EP 0018832 A3 19810513; DK 191580 A 19801105; NO 801268 L 19801105
DOCDB simple family (application)
EP 80301433 A 19800501; DK 191580 A 19800430; NO 801268 A 19800430