EP 0279931 B1 19920311 - MEMBRANE PUMP
Title (en)
MEMBRANE PUMP
Publication
Application
Priority
DE 3706338 A 19870227
Abstract (en)
[origin: US4828464A] In a diaphragm pump including a first chamber for liquid to be pumped separated from a second chamber for drive fluid by a diaphragm which is driven by a piston alternatively placing the drive fluid under pressure and releasing the pressure from the drive fluid, a signal generator or magnet is located in the diaphragm while a signal detector is located within the pump housing to enable detection of displacement of the diaphragm and, accordingly, the displaced volume of the diaphragm pump. Detection of the displaced volume is used by a regulator to generate a drive signal which, in turn, is used to drive a motor operator connected to a pressure relief valve to control drive fluid pressure and, accordingly, the displaced volume.
IPC 1-7
IPC 8 full level
F04B 43/02 (2006.01); F04B 43/06 (2006.01); F04B 43/067 (2006.01)
CPC (source: EP US)
F04B 43/067 (2013.01 - EP US)
Citation (examination)
Designated contracting state (EPC)
DE FR IT
DOCDB simple family (publication)
EP 0279931 A2 19880831; EP 0279931 A3 19890628; EP 0279931 B1 19920311; DE 3706338 A1 19880908; DE 3777390 D1 19920416; JP S63230977 A 19880927; US 4828464 A 19890509
DOCDB simple family (application)
EP 87118372 A 19871211; DE 3706338 A 19870227; DE 3777390 T 19871211; JP 4243088 A 19880226; US 16117788 A 19880226