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. 13, 1995
Filed:
Jan. 25, 1994
Yasuhito Yajima, Nagoya, JP;
NGK Insulators, Ltd., , JP;
Abstract
A thermal flowmeter for determining a parameter of a fluid flowing through a passage, includes: (a) resistor element including: an electrically insulating substrate; a metallic resistor supported by the substrate and having an electrical resistance which varies with an ambient temperature; and a pair of electrical conductors provided at opposite ends of the substrate and (b) electrically connected to the metallic resistor; and a pair of electrically conductive supports, fixed to a wall defining the passage, for securing the pair of electrical conductors, respectively, at securing portions in the pair of supports so that the resistor element is arranged in the passage; wherein a first distance between the pair of supports at the wall is smaller than a second distance between the pair of supports at the securing portions. The thermal flowmeter is durable under thermal stresses, especially when an ambient temperature around the thermal flowmeter frequently varies.