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:
May. 20, 1997
Filed:
Sep. 06, 1995
Charles R Harrington, Troy, MI (US);
Michel F Sultan, Troy, MI (US);
General Motors Corporation, Detroit, MI (US);
Abstract
A mass air flow sensor comprising: a sensing device with a substantially flat surface from a first point to a second point in a flow path, a heating element substantially centrally located between the first and second points, a first sensing element located between the first and second points on a first side of the heating element in the flow path direction, a second sensing element located between the first and second points on a second side of the heating element opposite the first side in the flow direction; and an air foil mounted a predetermined distance apart from the sensing device having a surface facing the heating element and the first and second sensors, wherein the air foil deflects air flow past the sensing device to be incident on the sensing device at an angle, wherein the air foil is symmetrical with respect to a line perpendicular to a center of the heating element and wherein bi-directional air flow past the sensing device is substantially free of turbulence between the first and second points.
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