Piston pump and piston assembly therefor
AssigneeGE Healthcare Bio-Sciences AB
InventorMats Lundkvist
Life of this patent
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Abstract
Disclosed is piston pump (10) and piston assembly (30) for such a pump. The piston pump includes a cylinder (20) having an inner wall surface (22) formed around an axis A of the cylinder, and a piston assembly (30) for sliding along said cylinder axis, said piston assembly includes a slideable flexible seal (34) in generally sealing contact with said inner wall surface, and a seal mounting (44), said seal mounting having a plurality of circumferentially arranged members (37) moveable radially of said axis to increase or decrease the size of the seal.
Claims16
A piston pump including:
- a cylinder having an inner wall surface formed around an axis of the cylinder;
- and a piston assembly for sliding along said cylinder axis, said piston assembly including a slideable flexible seal in generally sealing contact with said inner wall surface, and a seal mounting, said seal mounting having a plurality of circumferentially arranged members moveable radially of said axis to increase or decrease the size of the seal.
A piston assembly for sliding along a cylinder axis, said piston assembly including a slideable flexible seal for generally sealing contact with the cylinder wall surface, and a seal mounting, said seal mounting having a plurality of circumferentially arranged members moveable radially of said axis to increase or decrease the size of the seal.
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Dependencies are inferred from the claim text.