Patent ID: 7029250

Claim:
A pulsation damper for an oscillating positive-displacement pump, comprising an inlet connection element, an outlet connection element ( 3 ), and a line that connects these elements and is connected to a damping chamber inside the pulsation damper, wherein at least two damping chambers ( 5 , 5 a , 6 , 6 a ) connected in series are provided inside a damper housing ( 4 ), and a line segment connected to the inlet connection element ( 2 ) has a connecting channel to a first damping chamber ( 5 , 5 a ) as well as being connected, via an inlet throttle element, to a second damping chamber ( 6 , 6 a ) that is connected with the outlet connection element ( 3 ) via an outlet throttle element, and the inside of each damping chamber ( 5 , 5 a , 6 , 6 a ) is divided by a separating membrane ( 12 ) into a receiving space ( 13 , 14 ) for a damping element ( 11 ) made of an elastic material and an area ( 15 , 16 ) that conducts pumping medium.