EP 0144609 A3 19861203 - DIAPHRAGM TYPE PUMP DEVICE
Title (en)
DIAPHRAGM TYPE PUMP DEVICE
Publication
Application
Priority
JP 15981883 U 19831014
Abstract (en)
[origin: EP0144609A2] A diaphragm type pumpe device comprises a connecting rod (1), a diaphragm (2) connected to an end of the connecting rod, a cover (13) which firmly secures the outer circumferential part of the diaphragm and constitutes a first operation chamber (14), a frame (19) which opposes the cover to firmly secure the outer circumferential part of the diaphragm (2) in association with the cover (13) and constitutes a second operation chamber (20), and an intake port (15; 21) and a discharge port (16; 22) which are respectively communicated with the first operation chamber (14) and the second operation chamber (20) and provided with check valves (17, 23; 18, 24) each having different communicating direction, wherein the first and second operation chambers (14; 20) alternatively perform pumping operation by the amplitude movement of the diaphragm (2) due to a combination of the reciprocating movement of the connecting rod and the action of the check valves.
IPC 1-7
IPC 8 full level
F04B 43/02 (2006.01)
CPC (source: EP US)
F04B 43/023 (2013.01 - EP US)
Citation (search report)
- [X] US 4137020 A 19790130 - ITO MIKIJI, et al
- [X] US 3461808 A 19690819 - NELSON LOWELL F, et al
- [X] DE 2511298 A1 19750925 - AGROTECHNIKA NP
- [A] DE 3140790 A1 19830428 - MOLZAN EMIL
- [A] DE 1907454 B2 19740808
Designated contracting state (EPC)
DE FR GB
DOCDB simple family (publication)
EP 0144609 A2 19850619; EP 0144609 A3 19861203; JP S6066883 U 19850511
DOCDB simple family (application)
EP 84111969 A 19841005; JP 15981883 U 19831014