Flow verification mechanism
US6943690B2 · kind B2 · utility
0Cited by
10References
13Claims
0Family size
Assignee
Inventor
Key dates
| Filing date | Sep 4, 2003 |
| Grant date | Sep 13, 2005 |
| Priority date | — |
| Expiry date | Feb 10, 2024 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG01F25/0092
- WIPO fieldMeasurement
- WIPO sectorInstruments
Abstract
A flow verification sensor apparatus (30) is used with a constant volume pump (11) that pumps a liquid product (13) from a container (12). A plummet (32) is positioned in a flow tube (31). A sensor (33) is positioned upward from the lower end of the flow tube (31). A timer (34) measures the length of time for the plummet (32) to move from a first position to a second position after activation of the pump (11). Suitable alarms (50) are operated to indicate low flow or out of product conditions.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.