Binary pump and liquid chromatograph
US12031961B2 · kind B2 · utility
Assignee
Inventor
Key dates
| Filing date | Jun 26, 2019 |
| Grant date | Jul 9, 2024 |
| Priority date | — |
| Expiry date | Oct 28, 2040 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG01N2030/326
- WIPO fieldMeasurement
- WIPO sectorInstruments
Abstract
A binary pump in which an operation controller causes each of two liquid delivery pumps to execute, while a secondary discharge process is executed, a suction process, a first pre-pressurizing process, and a standby process. The operation controller causes each of the two liquid delivery pumps to execute a second pre-pressurizing process before proceeding from the secondary discharge process to the primary discharge process. Furthermore, the operation controller causes, as long as continuous liquid delivery by each of the two liquid delivery pumps is not interrupted, at least one of the two liquid delivery pumps to execute avoidance operation of interrupting the standby process and proceeding to the second pre-pressurizing process by using the operation state of each of the two liquid delivery pumps, so as to avoid overlap of execution time zones of the primary discharge processes of the two liquid delivery pumps.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.