Secondary pump unit
US5720174A · kind A · utility
6Cited by
5References
6Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Oct 3, 1996 |
| Grant date | Feb 24, 1998 |
| Priority date | — |
| Expiry date | Oct 3, 2016 |
Classification
- Technology area (CPC Y)Emerging Cross-Sectional Technologies
- CPC primaryY10S417/901
- WIPO fieldEngines, pumps, turbines
- WIPO sectorMechanical engineering
Abstract
A secondary pump unit comprising a mechanical secondary pump and a cryogenic trap, wherein the cryogenic trap forms a ring surrounding the outside of the mechanical secondary pump at its intake end, and the trap is enclosed in a casing defining, in parallel, the intake opening of the mechanical pump and of the cryogenic trap.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.