Conveyor device

A supply device configured to supply pressure fluid into at least one vehicle brake, said supply device comprising:

• a pressure fluid inlet,
• a pressure fluid outlet,
• a piston is movably arranged in a bore of an accommodating member and has a first partial piston defining a first hydraulically active diameters and a second partial piston defining a second hydraulically active diameter to supply pressure fluid in a direction of the pressure fluid outlet,
• at least one non-return valve is used for ventilation of a working chamber into which the piston is immersed, wherein the first partial piston and the second partial piston are arranged and guided so as to be movable directly in the bore of the accommodating member.

A supply device configured to supply pressure fluid into at least one vehicle brake, said supply device comprising:

• a pressure fluid inlet,
• a pressure fluid outlet,
• a piston is movably arranged in a bore of an accommodating member and has a first partial piston defining a first hydraulically active diameter and a second partial piston defining a second hydraulically active diameter to supply pressure fluid in a direction of the pressure fluid outlet,
• at least one non-return valve is used for ventilation of a working chamber into which the piston is immersed, the non-return valve is configured as a suction valve, and
• a second non-return valve designed as a pressure valve and having a sealing seat provided at a base member that includes a casing in which the second partial piston is received, wherein
• the casing defines a shoulder at a top end thereof, said shoulder radially extending between the hydraulically active diameters for securing a sealing element engaging the first partial piston in position in the bore of the accommodating member.

A supply device configured to supply pressure fluid into at least one vehicle brake, said supply device comprising:

• a pressure fluid inlet,
• a pressure fluid outlet,
• a piston is movably arranged in a bore of an accommodating member and has a first partial piston defining a first hydraulically active diameter and a second partial piston defining a second hydraulically active diameter larger than the first hydraulically active diameter to supply pressure fluid in a direction of the pressure fluid outlet,
• at least one non-return valve is used for ventilation of a working chamber into which the piston is immersed, wherein the second partial piston is a ball arranged and guided in a casing of a base member for a second non-return valve.