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:
Feb. 05, 2013
Filed:
Sep. 22, 2009
Stephen L. Douglass, Newbury, OH (US);
Michael Leonard Davis, Jr., Madison, OH (US);
Michael Victor Kaminski, Elyria, OH (US);
Michael James Keller, Tallmadge, OH (US);
Michael Adam Pintz, Fairview Park, OH (US);
Gene J. Cicigoi, Jr., Mentor, OH (US);
Stephen L. Douglass, Newbury, OH (US);
Michael Leonard Davis, Jr., Madison, OH (US);
Michael Victor Kaminski, Elyria, OH (US);
Michael James Keller, Tallmadge, OH (US);
Michael Adam Pintz, Fairview Park, OH (US);
Gene J. Cicigoi, Jr., Mentor, OH (US);
Thermotion, LLC, Mentor, OH (US);
Abstract
A thermo-magnetic actuator includes operative components, preferably in a sealed container, from which a rotatable or translatable shaft extends. The shaft is driven by supplying electrical power to a heater in a closed chamber containing a working fluid that expands upon being heated. The expansion of the fluid drives a piston that, in turn, slides a rack coupled to the shaft. A ferromagnetic target is connected to the rack and attracted by a magnetic field produced by an electromagnet that receives electrical power from the same source as the heater. The attraction of the target causes an end of the target to latch magnetically and mechanically and to open an electrical switch, disconnecting current flow to the heater, without disturbing current flow to the electromagnet. The target is released and the rack and target return to their original positions upon termination of current flow to the electromagnet.