发明名称 |
Movable cleaning assembly for an aspirating needle |
摘要 |
A liquid dispensing apparatus is characterized by a cleaning arrangement movable with the aspirating needle of the apparatus. The cleaning arrangement includes a pair of mating wellheads one of which has a flange with a planar surface thereon. The other of the wellheads has a corresponding cutout therein. When registered, the wellheads cooperate to define a well-like chamber with a closed bottom. The wellheads are each mounted on an arm which is movable from open to closed dispositions in response to movement of the aspirating needle.
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申请公布号 |
US4820497(A) |
申请公布日期 |
1989.04.11 |
申请号 |
US19860877635 |
申请日期 |
1986.06.23 |
申请人 |
E. I. DU PONT DE NEMOURS AND COMPANY |
发明人 |
HOWELL, GARY W. |
分类号 |
G01F13/00;G01N1/00;G01N35/10;(IPC1-7):G01N35/00 |
主分类号 |
G01F13/00 |
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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