发明名称 |
High pressure low volume pump |
摘要 |
A piston carrier supports an elongated, slender piston rod for reciprocation in a pump cylinder to pump fluid into and out of the cylinder. The piston rod is made of a material such as sapphire or zircon and has a diameter less than about ten millimeters, and the pump can provide flows of from about 50 nanoliters to about 250 microliters per minute at pressures of several hundred bars. A drive motor rotates a threaded screw and a drive nut of a drive system applies a linear drive force to the piston carrier. A ball and socket connection between the drive system and the piston carrier avoids the need for precise alignment to prevent breakage of the fragile piston. A magnet in the socket holds the ball in place and avoids the need for a spring or other mechanical holder. The socket also includes a ring of a low reluctance material surrounding the ball to increase the magnetic retention force.
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申请公布号 |
US6736049(B2) |
申请公布日期 |
2004.05.18 |
申请号 |
US20020182882 |
申请日期 |
2002.10.22 |
申请人 |
GILSON, INC. |
发明人 |
CAUTENET ETIENNE;DE TALHOUET PHILIPPE |
分类号 |
F04B53/14;F04B53/22;(IPC1-7):F16J1/14;F16C11/00 |
主分类号 |
F04B53/14 |
代理机构 |
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代理人 |
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主权项 |
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地址 |
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