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:
Apr. 03, 1990
Filed:
Aug. 12, 1988
Jeffrey C Jewitt, Etobicoke, CA;
Guardian Technologies, Inc., Cincinnati, OH (US);
Abstract
A breath sobriety test system deters circumvention of a test having an alcohol measuring phase and an identification phase. In an alcohol measuring phase, the alcohol content of a breath sample delivered by an operator/test subject is measured in the conventional manner according to the electrical output signal of an alcohol sensor. In the identification phase, the operator/test subject confirms his or her identity as a designated individual by performing an identity-confirming act recognizable by the system. The identity-confirming act includes delivering breath to the system. The response of the alcohol sensor to the breath delivered in the identification phase is compared with the reading taken during the alcohol measuring phase. If the two readings differ by more than a predetermined amount and in particular if the identification phase reading exceeds the alcohol measurement phase reading by more than said amount, the test is not passed regardless of whether the alcohol measurement is otherwise acceptable and regardless of whether the identity-confirming act is performed correctly.