An infusion group for infusion making machines, in particular for making espresso coffee, comprises a moving member (2) that has an internal cavity (3) adapted to receive a dose of powdered substance and that can be horizontally translated. The chamber co-operates with a piston (4) that can be horizontally translated and with a stationary piston (5), and the dose of powdered substance can be compressed between such pistons because of the translation. The moving member (2) and the moving piston (4) are simultaneously translated in opposite directions by respective threaded shafts (8, 18) that are simultaneously rotated in opposite directions.
申请公布号
WO0191620(A1)
申请公布日期
2001.12.06
申请号
WO2001IB00898
申请日期
2001.05.23
申请人
RANCILIO MACCHINE PER CAFFE' S.P.A.;SOWDEN, GEORGE;BONISSI, VITTORIO;FOGAGNOLO, ARMANDO