Patent · US Active

Ignition interlock breathalyzer

US7934577B2 · kind B2 · utility

88Cited by

26References

26Claims

0Family size

Assignee

Consumer Safety Technology, LLC · US

Inventors

Michael W. Walter · Urbandale, US
Douglas Edward DeVries · Johnston, US

Key dates

Filing date	Jul 17, 2009
Grant date	May 3, 2011
Priority date	—
Expiry date	Jul 17, 2029

Classification

Technology area (CPC B)Performing Operations; Transporting
CPC primaryB60K2028/006
WIPO fieldMeasurement
WIPO sectorInstruments

Abstract

The invention relates to an improvement in a breath alcohol test devices includes within the handheld unit containing a fuel cell, a miniaturized self calibrating test device thereby avoiding the need for 30, 60 and 90 day calibration testing. It also relates to various tamper or circumvention improvements that may be used alone or in combination with the self calibration improvement, including cameras to record a driver providing a breath sample and to verify the location of the driver within a vehicle.

Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.