Cartridge based breath alcohol calibration device
US9207223B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | Jun 27, 2013 |
| Grant date | Dec 8, 2015 |
| Priority date | — |
| Expiry date | Jun 27, 2033 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG01N33/4972
- WIPO fieldMeasurement
- WIPO sectorInstruments
Abstract
A calibration device for a breath alcohol testing device includes a pump providing a controlled air flow at a predetermined rate, a chamber in fluid communication with the pump that receives the air flow from the pump, and an outlet opening in fluid communication with the chamber that allows the air flow to exit the chamber in which the chamber and/or outlet opening can be heated to a predetermined maintainable temperature during operation of the pump. The calibration device is releasably connected to or brought in fluid communication with a breath alcohol testing device such that the air flow exiting the outlet opening passes into the testing device. The calibration device receives a sealed cartridge containing a predetermined alcohol concentration in the chamber and further includes a lid for opening/closing the chamber wherein the cartridge can be pierced such that the air flow provided by the pump to the chamber will pass through the cartridge.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.