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. 21, 2019
Filed:
Apr. 19, 2018
Littelfuse, Inc., Chicago, IL (US);
Weiqing Guo, Palo Alto, CA (US);
Boris Golubovic, San Francisco, CA (US);
Littelfuse, Inc., Chicago, IL (US);
Abstract
A jelly roll-type PTC device including a PTC material layer, a first electrode layer disposed on a first surface of the PTC material layer, a second electrode layer disposed on a second surface of the PTC material layer opposite the first surface between overlapping portions of the first electrode layer and the second electrode layer, and an insulation layer disposed on a surface of the second electrode layer opposite the PTC material layer and covering a region where the first electrode layer overlaps the second electrode layer, wherein the first electrode layer, the PTC material layer, the second electrode layer, and the insulation layer are rolled together to define a jelly roll structure with the PTC material layer providing an electrically conductive pathway between the overlapping first and second electrode layers, and with the insulation layer providing an electrically insulating barrier between the first and second electrode layers.