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:
Sep. 25, 2001
Filed:
Dec. 01, 1998
James Chien-Chung Chen, Taipei, TW;
Atech Technology Co., Ltd., Taipei, TW;
Abstract
Disclosed is a transformer bobbin with hipot-protect structure. The bobbin is integrally formed from plastic material through injection molding and includes a central shaft portion and an outer frame portion at two ends of the central shaft portion. When the bobbin is formed during molding, the outer frame portion is extended from one or two lateral outer ends thereof for a length and therefore forms one or two extended portions on the bobbin. Upright rib or ribs may be additionally provided on top surface of the extended portion. The extended portion provide increased creepage distance between pins connected to outer end surfaces of the bobbin and the core of the transformer to effectively prevent hipot from transiting from pins at one end to pins at the other end by crossing over the core directly.