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, 2023
Filed:
Aug. 28, 2018
Koninklijke Philips N.v., Eindhoven, NL;
Achim Hilgers, Eindhoven, NL;
Daan Anton Van Den Ende, Eindhoven, NL;
Cornelis Petrus Hendriks, Eindhoven, NL;
Ronald Antonie Hovenkamp, Eindhoven, NL;
Mark Thomas Johnson, Eindhoven, NL;
Eduard Gerard Marie Pelssers, Eindhoven, NL;
Franciscus Johannes Gerardus Hakkens, Eindhoven, NL;
KONINKLIJKE PHILIPS N.V., Eindhoven, NL;
Abstract
An actuator device has a temperature sensing means and a controller adapted to apply a high frequency AC signal to stimulate internal self-heating to thereby maintain a temperature of an actuator member of the device at a certain fixed temperature, this temperature being elevated with respect to an initial temperature of the actuator member. This ensures that thermal drift may be mitigated or eliminated by compensating for any changes in environmental temperature through raising or lowering the level of the heating signal.