Invention Application
WO2010131976A1 PUMP PISTON DEVICE 审中-公开
泵活塞装置

PUMP PISTON DEVICE
Abstract:
A pump piston device (12) for reciprocating movement in a pump cylinder (4) in which, between the pump piston (12) and the pump cylinder (4), an annular space (26) is formed which is defined by a first seal (20) and a second seal (24), the annular space (26) being pressurized, and the first seal (20) and the second seal (24) being in a common piece of material which constitutes the pump piston (12).
Patent Agency Ranking
0/0