Flow rate threshold sensor
US4747364A · kind A · utility
52Cited by
13References
14Claims
0Family size
Assignee
Inventor
Key dates
| Filing date | Aug 5, 1986 |
| Grant date | May 31, 1988 |
| Priority date | — |
| Expiry date | Aug 5, 2006 |
Classification
- Technology area (CPC Y)Emerging Cross-Sectional Technologies
- CPC primaryY10S116/25
- WIPO fieldChemical engineering
- WIPO sectorChemistry
Abstract
A flow rate sensor for use with an air filter channels air flow to energize an audible sound generator upon development of an air pressure differential within the sensor above a settable threshold, which pressure differential results from a reduction in the air flow rate through the air filter due to clogging of the air filter by filtered matter.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.