EP 0364823 B1 19920729 - DEVICE FOR PNEUMATICALLY DISPENSING CONCRETE HYDROMECHANICALLY TRANSPORTED IN A DENSE FLOW
Title (en)
DEVICE FOR PNEUMATICALLY DISPENSING CONCRETE HYDROMECHANICALLY TRANSPORTED IN A DENSE FLOW
Publication
Application
Priority
- DE 3835373 A 19881018
- DE 3927332 A 19890818
Abstract (en)
[origin: EP0364823A1] In a device for pneumatically dispensing concrete hydromechanically transported in a dense flow, in which, for the hydromechanical transportation, a concrete pump with a hydraulic drive comprising at least two cylinders with opposed pistons is used, said pistons being synchronised by a displacer circuit carrying the working medium displaced by a piston, and has a metering device for an additive serving as accelerating agent, the drive of which is connected into the hydraulic circuit of the concrete pump drive, it is envisaged according to the invention that the drive (34-37) of the metering device (43-47; 60-70) is connected into the displacer circuit (31) and is designed as a reciprocating piston drive (34), the capacity of which corresponds to the displacement volume of the working pistons (27, 28) and, in both directions, is added to the displacement volume of each working piston (27, 28). <IMAGE>
IPC 1-7
IPC 8 full level
E04G 21/02 (2006.01); B28C 7/16 (2006.01); F04B 9/117 (2006.01); F04B 13/02 (2006.01); F04B 15/02 (2006.01)
CPC (source: EP US)
B28C 7/163 (2013.01 - EP US); F04B 9/1178 (2013.01 - EP US); F04B 13/02 (2013.01 - EP US); F04B 15/02 (2013.01 - EP US); Y10S 417/90 (2013.01 - EP US); Y10T 137/2516 (2015.04 - EP US)
Designated contracting state (EPC)
AT BE CH DE ES FR GB GR IT LI LU NL SE
DOCDB simple family (publication)
EP 0364823 A1 19900425; EP 0364823 B1 19920729; BR 8905270 A 19900522; CA 2000952 A1 19900418; ES 2034550 T3 19930401; GR 3005875 T3 19930607; JP 2852541 B2 19990203; JP H02225768 A 19900907; US 5066203 A 19911119
DOCDB simple family (application)
EP 89118477 A 19891005; BR 8905270 A 19891017; CA 2000952 A 19891018; ES 89118477 T 19891005; GR 920402207 T 19921001; JP 26831189 A 19891017; US 64447891 A 19910118