Patent · US Active

Breath alcohol measuring apparatus

US8453492B2 · kind B2 · utility

38Cited by

2References

22Claims

0Family size

Assignee

Tokai Denshi, Inc. · JP

Inventors

Hanzo Tsuzuki · Fuji, JP
Kentaro Sato · Kyoto, JP
Yuji Yamazawa · Fuji, JP

Key dates

Filing date	Jun 16, 2011
Grant date	Jun 4, 2013
Priority date	—
Expiry date	Dec 12, 2031

Classification

Technology area (CPC G)Physics
CPC primaryG01N33/4972
WIPO fieldMeasurement
WIPO sectorInstruments

Abstract

When a pressure of a breath is kept to fall within a valid range, a CPU of a breath alcohol measuring apparatus updates a breath amount accumulation value that is an accumulation value of the amount of the breath blown into a mouth piece; when the breath pressure reaches the range outside the valid range, the CPU resets the breath amount accumulation value; and when the breath amount accumulation value reaches a valid breath amount, the CPU measures the alcohol concentration by an alcohol sensor. A breath pressure display portion is arranged at the position that can visually be recognized by a to-be-measured person who is blowing into the mouth piece.

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