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. 01, 1993
Filed:
Aug. 23, 1991
Johannes Hartfiel, Ludwigshafen, DE;
ProMinent Dosiertechnik GmbH, Heidelberg, DE;
Abstract
A quantity flowmeter for measuring the volume of flow of a pulsating fluid stream has a conduit for a freely movable float which is biased against a stop and is moved away from the stop by successive pulses or droplets of the pulsating fluid stream. The float carries or includes a permanent magnet or an electromagnet, and the conduit is surrounded by a self-inductance coil with turns having a density which varies in or counter to the direction of movement of the float away from the stop. When a pulse causes the float to move away from the stop, voltage signals which are generated by the coil and indicate the speed of movements of the float are transmitted to an integrator which transmits integrated signals to a computer. The computer calculates the volume of flow of successive pulses.