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:
Jun. 18, 1991
Filed:
Dec. 15, 1989
Masanori Inada, Himeji, JP;
Hichiro Ohtani, Himeji, JP;
Mitsubishi Denki Kabushiki Kaisha, Tokyo, JP;
Abstract
A thermal flow sensor has a heat-sensitive resistor which is disposed at a predetermined angle relative to the line of stream of a fluid, and which has its heat-sensitive portion disposed on the surface portion of a substrate which is positioned downstream in the direction in which the fluid flows. Since the heat-sensitive resistor is already disposed at a predetermined angle relative to the line of stream of the fluid, this permits only slight influence on, hence, variation in detection characteristic to be caused by deviation in the disposition angle. Since the heat-sensitive portion is disposed on a surface portion positioned downstream in the direction of fluid flow, this restrains dust contained in air from directly depositing on the heat-sensitive portion, hence, from causing variation in detection characteristic.