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:
Dec. 07, 1993
Filed:
Jul. 27, 1992
Richard W Caron, Canton, MI (US);
Ford Motor Company, Dearborn, MI (US);
Abstract
A two temperature test apparatus for a mass air flow sensor having a cold test station disposed in a cold test chamber and a hot test station disposed in a hot test chamber. A first air manifold connects the cold test chamber with a vacuum chamber. The first air manifold includes a sonic nozzle controlling the air flow through the first air manifold. A second air manifold connects the cold test station to the hot test station. A third air manifold connects the hot test station to an air filter within the hot test chamber. The mass air flow sensor is mounted on a production carrier having a transverse air passage receiving the sensing head of the mass air flow sensor. The transverse air flow passage of the carrier in the cold test station connects the first air manifold to the second air manifold and the transverse air flow passage of the carrier in the hot test station connects the second air manifold to the third air manifold. An electrical control energizes the mass air flow sensors in the cold and hot test stations and stores the output signal.