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:
Apr. 23, 2013
Filed:
Dec. 15, 2005
Bernardo Arnoldus Mulder, Drachten, NL;
Thijs DE Haan, Drachten, NL;
Bernardo Arnoldus Mulder, Drachten, NL;
Thijs De Haan, Drachten, NL;
Koninklijke Philips Electronics N.V., Eindhoven, NL;
Abstract
A flow-through heating system () is described, comprising: a flow tube (); a plurality of at least two heating elements (A,B,C), each heating element being connected in series with a corresponding controllable switch (A,B,C); a control unit () having control outputs (A,B,C) coupled to said controllable switches; the control unit () being designed to generate control signals (Sa, Sb, Sc) for opening and closing the controllable switches such that said heating system is operated at a required power (Pr) less than the power capacity (Ptot) of said heating system by operating precisely one of said heating elements at reduced power while the remaining heating elements are either operated at full power or at zero power.