Patent ID: 9376787
Filing Date: 2016-06-28
CPC Classification: E02F,F15B

Claim Text:
1. A hydraulic valve device, comprising: a double acting hydraulic cylinder (D) with a first engine port (L) and a second engine port (N); a tank (T); a pump (I); a hand valve (H) connecting the first and second engine ports (L, N) to the tank (T) and the pump (I), said hand valve (H) having first and second open positions, wherein, in the first open position, the pump (I) is connected to the first engine port (L) via a first line (F), and the tank (T) connected to the second engine port (N) via a second line (G), and wherein, in the second open position, the pump (I) is connected to the second engine port (N) via the second line (G), and the tank (T) is connected to the first engine port (L) via the first line (F); a first nonreturn valve ( a piston ( a second nonreturn valve (