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:
Jan. 02, 1979
Filed:
Jul. 22, 1977
Gary L VanderSyde, Naperville, IL (US);
Alcohol Countermeasure Systems, Inc., Sarnia, CA;
Abstract
In a breath tester of the type wherein a subject blows breath into an input for a predetermined continuous and uninterrupted flow, which breath is exposed to an electronic detector element whose output signal is employed to derive and display an output which is representative of the alcohol present in the breath and which detector, if subject to continued exposure of additional breath after the predetermined flow, is prone to produce an erroneous output, an electronic system is provided for electrically storing and isolating a detector signal produced from only the predetermined flow, whereby errors resulting from continuous flow or mechanical valving arrangements are avoided. The system disclosed includes circuit means for switching out and holding the end of flow detector signal and for producing an output based on that signal.