Abstract: A breast pump for connection to a pair of funnel-like breast bodies via a corresponding pair of vacuum conduits in order to pump mother's milk into a milk collection container, the pump comprising a source of vacuum including pumping devices. A conduit system leads from the vacuum source at one end and comprises a pair of connection portions to be connected to the vacuum conduits at the other end. A pair of valve devices are arranged within the conduit system to distribute the vacuum to the connection portions, the pair of valve devices including a pair of valve bodies separated from each other so as to move independently from each other, a pair of valve chambers each housing one of the pair of valve bodies and each having an inlet opening communicating with the source of vacuum, and an outlet opening communicating with one of the pair of connection portions.

Abstract: A breast pump fitted with an element to be applied on a woman's breast, including an outflow duct and a pumping device branching off from the outflow duct through a first bypass. Another bypass leads to a milk collector through a check valve, which is fitted with a valve body with at least one outlet for the milk pumped on the front face and a valve reed of flexible material, intended to seal the outlet during suction, and which is connected to the valve body through a connecting device having on the edge of its front face a hinge for a valve reed freely extending from the hinge over at least part of the front face. In an another embodiment, the bypass in which the valve is located may be oriented downwards relative to the outflow duct, and the bypass in which the pumping device is located, or at least some segments of it, may be oriented upwards. To control the suction effect on the breast, an infiltrated air inlet can be provided in one of the ducts an/or bypasses or in a pipe connected thereto.

Abstract: A breast pump for pumping milk from a woman's breast comprises a breast hood to be applied onto the woman's breast. A suction chamber communicates with said breast hood, and a suction pump communicates with the suction chamber. A milk collecting vessel or other space receives the milk that is pumped from the woman's breast. Between said suction chamber and the milk collecting means is a check valve. In communication with the suction chamber and the suction pump is an overflow protection for protecting the suction pump from being flooded by an excess of milk. The overflow protection comprises an valve housing elongated along a longitudinal axis. The housing has two opposing end walls, a first one of which including an entrance opening nearer to the suction chamber, the second end wall defining an outlet opening nearer to the suction pump. Within the valve housing is an elongated valve body movable along the longitudinal axis of the housing and is provided with an impact surface opposite the entrance opening.

Abstract: A drive unit is disclosed for at least one breastpump for pumping mother milk by sucking it from a breast hood to be applied on a mother's breast by means of a breast pump connected to a breast hood through a pathway including a conduit and a vacuum chamber shut by a check valve against a milk collecting space, the drive unit comprisingvalve means for intermittently connecting and disconnecting the breast pump with a pathway, a valve means including actuating means for providing the intermittent connecting and disconnecting movement;first drive means for the actuating means;second drive means for driving the breast pump for providing a sucking effect; andspeed varying means connected to and controlling at least one of the first and second drive means.