发明名称 |
LATCHING & SEALING DEVICE |
摘要 |
A latching and sealing device suitable for use as a cover seal for a plunger or piston in a syringe or plunger pump includes a cylindrical seal member having a body portion and lip-and-latch means for both sealably engaging a surrounding surface and latching to the piston. A spring disposed in between the lip-and-latch means and the piston provide a constant sealing pressure while allowing the piston and seal member to be moved within a bore. Sealing between the lip-and-latch means and the bore is enhanced by use of a berm and notches radially aligned with the biasing spring. |
申请公布号 |
GB8719564(D0) |
申请公布日期 |
1987.09.23 |
申请号 |
GB19870019564 |
申请日期 |
1987.08.19 |
申请人 |
BALSELLS, P J;BALSELLS, J C |
发明人 |
|
分类号 |
F04B53/14;F16J15/32;F16J15/56;G01N30/02;G01N30/32 |
主分类号 |
F04B53/14 |
代理机构 |
|
代理人 |
|
主权项 |
|
地址 |
|