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, 2006
Filed:
Jul. 28, 2000
Alan Beale, South Wales, GB;
Stephen John Cook, Reading, GB;
Michael David Newton, South Wales, GB;
Huntleigh Technology, PLC, , GB;
Abstract
A fluid flow control system for an electromagnetic pump having an electromagnetic drive () and a compressor (). The control system established a required current in the compressor coils () to control the position and movement of the actuator (), the actuator deflecting a diaphragm within the pump to provide the required flow. The control system includes a command signal generator () to create a signal representing the required flow. The signal is applied to a command processor () with any feedback signals () for example, coil current and/or actuator displacement. The command processor () calculates the appropriate drive signal defined by mark-space ratio, repetition rate, and amplitude. The drive signal controls the voltage supplied to the compressor coils () resulting in a required coil current to provide the desired flow. A dc power supply is used to avoid problems regarding main power supply and frequency.