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. 02, 1989
Filed:
Mar. 03, 1987
Wolfgang Weibler, Hofheim, DE;
VDO Adolf Schindling AG, Frankfurt am Main, DE;
Abstract
In an apparatus for measuring the velocity of flow of fluids, and particularly the intake air of internal combustion engines, with an electrically heatable resistance layer which is applied in insulated manner onto a support, and is in thermal contact with the flowing fluid, a layer of low thermal conductivity is furthermore applied in such a manner that the local heat transfer coefficient between the flowing fluid and the resistance layer is at least approximately constant in the direction of flow. In this connection, the thickness of the layer can decrease continuously or stepwise in the direction of flow. A reduction in the response time is obtained. Glass or polytetrafluorethylene, among other substances, enter into consideration as material for the layer.
Data source: USPTO (United States Patent and Trademark Office) public patent records. Weekly synchronization. How IDiyas builds this profile