Patent ID: 8672054

Claim:
Hand tool comprising: a working head having a cylinder, a piston mounted in said cylinder, first and second hydraulic paths formed in said working head, a first space between said cylinder and said piston, and a second space between said cylinder and said piston, said piston capable of being moved in a first direction relative to said cylinder and being capable of being moved in a second direction relative to said cylinder, said second direction being opposite to said first direction; a body unit attached to the working head, said body unit including drive elements for driving the working head, a piston and a reservoir, said working head and said body unit being swivelable relative to each other such that said working head can be positioned in a first position relative to said body unit and said working head can be positioned in a second, different position relative to said body unit, said first and second positions of the working head relative to the body unit can be fixed in place by direct abutment between the piston of said body unit and the working head; hydraulic medium provided within said working head and within said reservoir of said body unit; said hydraulic paths in said working head capable of being in fluid communication with said hydraulic medium in said reservoir of said body unit, said first path directing hydraulic medium from said reservoir of said body unit to said first space to effect movement of the piston in said first direction, and said second path directing hydraulic medium from said reservoir of said body unit to said second space to effect movement of the piston in said second direction, wherein movement of said piston in said first direction can be effected when said working head is in said first position, and movement of said piston in said second direction can be effected when said working head is in said second position.