Sample injection system
US4002070A · kind A · utility
4Cited by
5References
7Claims
0Family size
Assignee
Inventor
Key dates
| Filing date | Feb 26, 1975 |
| Grant date | Jan 11, 1977 |
| Priority date | — |
| Expiry date | Feb 26, 1995 |
Classification
- Technology area (CPC Y)Emerging Cross-Sectional Technologies
- CPC primaryY10T137/87676
- WIPO fieldMeasurement
- WIPO sectorInstruments
Abstract
Disclosed herein is an apparatus for injecting a quantity of sample liquid into a continuously flowing carrier liquid comprising a housing, a primary channel, carrier inlet and outlet means both connected to the primary channel to form a carrier conduit through the housing, sample inlet and outlet channels both connected to the primary channel to form a sample conduit through the housing, a normally closed pressure relief valve disposed in the primary channel between the sample conduit and the carrier conduit, and means to change the pressure differential between the liquid flowing in the sample and carrier conduits.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.