Low level indicator
US4468170A · kind A · utility
13Cited by
12References
2Claims
0Family size
Assignee
Inventor
Key dates
| Filing date | Jun 7, 1982 |
| Grant date | Aug 28, 1984 |
| Priority date | — |
| Expiry date | Jun 7, 2002 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH01H35/34
- WIPO fieldElectrical machinery, apparatus, energy
- WIPO sectorElectrical engineering
Abstract
A low level indicator and warning device is provided wherein a diaphragm is provided directly in a line for drawing liquid from one container to another. Liquid flowing in the line washes directly across the diaphragm so that it remains clean and thus operative even in the presence of materials which might form a crust on the diaphragm.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.