Clip-on monitor for detecting clogged air-filters
US10821388B2 · kind B2 · utility
Inventors
Key dates
| Filing date | Apr 11, 2018 |
| Grant date | Nov 3, 2020 |
| Priority date | — |
| Expiry date | Nov 21, 2038 |
Classification
- Technology area (CPC B)Performing Operations; Transporting
- CPC primaryB01D2275/205
- WIPO fieldChemical engineering
- WIPO sectorChemistry
Abstract
A monitoring clip to be secured to the edge of a filter cartridge includes a channel connecting both sides of the filter through which air will flow in response to the filter becoming clogged. Air flow within the channel will eventually be strong enough to pivotally move a flow vane. Controlling circuitry is used to detect the angular movement of the flow vane. When the flow vane moves to a “triggering” position, it is determined that the filter is clogged and requires replacement. Controlling circuitry will sound and illuminate a local alarm, and send a signal by Bluetooth or WiFi, to a smartphone. Although a clip format is preferred, the measuring and controlling circuitry of the monitoring clip can be also built into new filters.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.