EP 0854285 A3 19991124 - Pumping device, in particular for cement material
Title (en)
Pumping device, in particular for cement material
Title (de)
Betonpumpe
Title (fr)
Pompe à béton
Publication
Application
Priority
IT PR970002 A 19970117
Abstract (en)
[origin: EP0854285A2] In a pumping device (1) a first piston pump (4) and a second piston pump (8), having respectively a first suction/delivery mouth (6) and a second suction/delivery mouth (10) both communicating with the inside of a container (2) suitable for containing a material to be pumped, act in phase with one another so that, when one performs the compression phase, the other one performs the suction phase. A connection duct (13) provided with an inlet aperture (14) for the material pressed by the said piston pumps (4) and (8) is able to rotate about an axis of rotation (x-x) with the possibility of assuming selectively at least a first position and a second position in which the inlet aperture (14) is sealingly connected to the first suction/delivery mouth (6) and, respectively, to the second suction/delivery mouth (10). The pumping device (1) is used in particular on building sites for the purpose of conveying concrete. <IMAGE>
IPC 1-7
IPC 8 full level
F04B 7/00 (2006.01); F04B 15/02 (2006.01)
IPC 8 main group level
CPC (source: EP)
F04B 1/02 (2013.01); F04B 7/00 (2013.01); F04B 15/02 (2013.01)
Citation (search report)
- [XY] US 3663129 A 19720516 - ANTOSH LEON A
- [Y] DE 19503986 A1 19960808 - HUDELMAIER ULRIKE [DE], et al
- [Y] US 3829254 A 19740813 - STETTER G, et al
- [X] US 3068806 A 19621218 - SHERROD EUGENE L
- [A] EP 0690229 A1 19960103 - SEDEPRO [FR]
- [A] EP 0422745 A1 19910417 - FABER PIETER [NL]
Designated contracting state (EPC)
AT BE CH DE DK ES FI FR GB GR IE IT LI LU MC NL PT SE
DOCDB simple family (publication)
EP 0854285 A2 19980722; EP 0854285 A3 19991124; IT 1294068 B1 19990322; IT PR970002 A1 19980717
DOCDB simple family (application)
EP 98830016 A 19980116; IT PR970002 A 19970117