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:
Oct. 13, 1981
Filed:
Nov. 20, 1979
Heinz Lauterbach, Esslingen, DE;
Robert Bosch GmbH, Stuttgart, DE;
Abstract
An apparatus for measuring the mass of a flowing medium which utilizes a temperature--dependent resistor disposed in the flow of the medium. The temperature-- dependent resistor includes a carrier and a resistor film disposed on the carrier. The temperature and/or resistance of the resistor film is governed by the mass of the flowing medium and serves as the basis for the generation of a manipulated variable which is a standard for the mass of the flowing medium. The apparatus also utilizes a preceding body aligned longitudinally with the carrier directly upstream of the carrier in the direction of the flow of the medium. The preceding body has a length such that a particular boundary layer state prevails about the temperature-dependent resistor and the heat-transfer coefficient of the resistor film is influenced in accordance with the mass of the flowing medium.