Method of and means for conveying and measuring gases for gas analysis operations
US4268224A · kind A · utility
4Cited by
6References
2Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Jul 23, 1976 |
| Grant date | May 19, 1981 |
| Priority date | — |
| Expiry date | Jul 23, 1996 |
Classification
- Technology area (CPC Y)Emerging Cross-Sectional Technologies
- CPC primaryY10S388/934
- WIPO fieldMeasurement
- WIPO sectorInstruments
Abstract
This invention relates to a method of and means for conveying and measuring gases for gas analysis operations by means of a pump, which conveys the gas with constant volume per working cycle. The means for this purpose, as used in connection with gas analysis instruments, consists of a cyclically operating gas delivery pump with an electric motor drive which is connected to a frequency transmitter for pre-setting the speed of rotation.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.