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. 07, 1995
Filed:
Nov. 10, 1992
David G Williams, Birmingham, GB;
Lucas Industries Public Limited Company, Solihull, GB;
Abstract
A hot wire flow rate measuring apparatus, having a platinum wire sensor and a thermistor in the upper limbs of a bridge circuit whose lower limbs have resistors. The thermistor, together with a linearising resistor and a scaling resistor, is connected into the bridge circuit via a potential divider. A differential amplifier and a transistor control the supply of power to the bridge circuit so that the platinum wire sensor is maintained at a higher temperature than the thermistor by a fixed temperature difference.
Data source: USPTO (United States Patent and Trademark Office) public patent records. Weekly synchronization. How IDiyas builds this profile