发明名称 |
Piston sealing mechanism for liquid additive injection pump |
摘要 |
A system for injecting a predetermined amount of a secondary fluid into a primary fluid stream uses a liquid additive injection pump driven by a fluid powered motor driven by the primary fluid stream. The liquid additive pump has a reciprocating piston movable within a cylinder between upstroke and downstroke positions to meter the secondary fluid and a piston sealing mechanism comprising spaced-apart distal and proximal sealing elements. The distal piston-sealing element is flared in the direction of piston downstroke and the proximal piston-sealing element is flared in the direction of piston upstroke.
|
申请公布号 |
US2004226605(A1) |
申请公布日期 |
2004.11.18 |
申请号 |
US20030440335 |
申请日期 |
2003.05.16 |
申请人 |
WALTON FRANK A.;WILLIAMS JAMES E. |
发明人 |
WALTON FRANK A.;WILLIAMS JAMES E. |
分类号 |
G05D11/00;(IPC1-7):G05D11/00 |
主分类号 |
G05D11/00 |
代理机构 |
|
代理人 |
|
主权项 |
|
地址 |
|