The patent badge is an abbreviated version of the USPTO patent document. The patent badge does contain a link to the full patent document.
The patent badge is an abbreviated version of the USPTO patent document. The patent badge covers the following: Patent number, Date patent was issued, Date patent was filed, Title of the patent, Applicant, Inventor, Assignee, Attorney firm, Primary examiner, Assistant examiner, CPCs, and Abstract. The patent badge does contain a link to the full patent document (in Adobe Acrobat format, aka pdf). To download or print any patent click here.
Patent No.:
Date of Patent:
Aug. 26, 2014
Filed:
Dec. 13, 2011
Eugene D. Walden, Eden Prairie, MN (US);
Whitney B. Walden, Eden Prairie, MN (US);
Ryan B. Walden, Eden Prairie, MN (US);
Eugene D. Walden, Eden Prairie, MN (US);
Whitney B. Walden, Eden Prairie, MN (US);
Ryan B. Walden, Eden Prairie, MN (US);
IPH, LLC, Lewiston, MN (US);
Abstract
A blood-alcohol content (BAC) tester for use at a facility serving alcohol. The BAC tester includes a breath-sampling unit having an air-chamber unit defining a closed position and an open position. The air-chamber unit has a first air-chamber block and a second air-chamber block, the first air-chamber block and the second air-chamber block defining an air chamber for receiving air exhaled from a user. The breath-sampling unit also includes a drive unit coupled to the second air-chamber block and an alcohol sensor. The BAC tester also includes a sensor circuit communicatively coupled to the drive unit and the alcohol sensor. The sensor circuit is configured to cause the drive unit to move the second-air chamber block relative to the first air-chamber block so as to cause the air-chamber unit to be in the closed or the open position.