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:
Mar. 09, 1999
Filed:
Apr. 15, 1996
Takayuki Yamaguchi, Sendai, JP;
Ricoh Company, Ltd., Tokyo, JP;
Abstract
A novel flow sensor which includes a wall in a fluid path, a substrate installed on the wall, a flow sensor constructed with at least one electric resistor formed on the substrate, and a construction for reducing turbulence caused by an existence of the flow sensor. The construction for reducing turbulence may be that an upstream side edge of the substrate is formed into a slope shape, a stair shape or a streamline. The construction for reducing turbulence may also be that the substrate is embedded into the wall. In a case that the substrate of the sensor is installed on a support board set in the fluid path, at least an upstream side edge of the support board may be formed into an acute angle or a streamline. Using the apparatus, the turbulence caused by the existence of a vertical wall is reduced because a size of vertical wall portions is small.