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:
Aug. 01, 2006
Filed:
Dec. 20, 2002
Sergio Lolli, Ascoli Piceno, IT;
Richard Komurian, Turckheim, FR;
Anthony Alves, Holtzwihr, FR;
Mark IV Systems Moteurs, Courbevoie, FR;
Abstract
A pump/valve assembly forming part of a circuit for circulating a liquid fluid has a pump and a proportional-control valve unit () in series with the pump. The valve unit () has a valve (), an electrical actuator () and a position sensor () which are fixed to a movable member (') sealing the valve () for displacement therewith, and control means () controlling the actuator () according to the position of the movable member (′) indicated by the sensor () and a reference signal. The valve unit () is subjected to a procedure indexing the position of the movable member (′) and setting parameters for the control means () at the beginning of each new operating cycle of the assembly, and the pump () is rotated at a constant speed selected from a limited number of predetermined speeds at least during part of each operating cycle.