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. 03, 2011
Filed:
Nov. 23, 2007
Wen-tao Wang, Shenzhen, CN;
Cheng-hung Lin, Taipei Hsien, TW;
Zhi-gang HU, Shenzhen, CN;
Yong Zeng, Shenzhen, CN;
Zhi-guo Yang, Shenzhen, CN;
Ming-gang Wang, Shenzhen, CN;
Wen-Tao Wang, Shenzhen, CN;
Cheng-Hung Lin, Taipei Hsien, TW;
Zhi-Gang Hu, Shenzhen, CN;
Yong Zeng, Shenzhen, CN;
Zhi-Guo Yang, Shenzhen, CN;
Ming-Gang Wang, Shenzhen, CN;
Hong Fu Jin Precision Industry (ShenZhen) Co., Ltd., Shenzhen, Guangdong Province, CN;
Hon Hai Precision Industry Co., Ltd., Tu-Cheng, New Taipei, TW;
Abstract
An exemplary metal structure () includes a base portion (), a flange (), and an edge portion (). The base portion defines a circular flanged hole (). The flange extends from a top surface of the base portion and the flange surrounds the circular flanged hole. The edge portion is configured for connecting an inside surface of the flange and the top surface of the base portion. The edge portion includes an edge surface, and a ratio of a radius of the edge surface () of the edge portion with respect to a thickness of the base portion is less than 0.4. A method for making a circular flanged hole in a metal sheet () is also provided.