Patent ID: 9726311
Date: 2017-08-08
CPC Classifications: E02F,F16K,F16L,Y10T

Claim:
1. A multi-coupling device for connection of a plurality of hydraulic and/or pneumatic lines fed with pressurized fluid through quick couplings, comprising a fixed plate and a mobile plate, said fixed plate having a flat upper coupling surface and supporting a plurality of female couplings, and said mobile plate supporting a plurality of male couplings and comprising a flat upper coupling surface, said device comprising coupling means for connecting said mobile plate to said fixed plate by sliding said flat upper coupling surface of said mobile plate on said flat upper coupling surface of said fixed plate so as to bring said male couplings into correspondence with said female couplings, wherein each of said female couplings is a flat-faced coupling comprising at least an adapter coupled with said fixed plate, said adapter having a substantially hollow cylindrical body which coaxially houses a back inner body, also having a hollow cylindrical shape and being axially movable with regard to said adapter, a thrust chamber being defined between said back inner body and said adapter, said female coupling further comprising at least a valve for closing said female coupling, said thrust chamber being hydraulically unbalanced in order to axially advance said back inner body when pressurized, thus causing advancement of the valve and the hydraulic connection of the female coupling with the corresponding male coupling.