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:
Jun. 09, 2015
Filed:
Mar. 06, 2014
Adtran, Inc., Huntsville, AL (US);
Paul S. Wein, Jr., New Market, AL (US);
Adtran, Inc., Huntsville, AL (US);
Abstract
A knockout can be removed from a parent part in a sheet metal structure by removing one or more twistable tabs located on a perimeter of the knockout. A tab is defined by a region of sheet metal within a perimeter consisting of a first and a second cut. The first and second cuts extend through the sheet metal along first and second paths. A first neck extends between the first end of the first cut and the first end of the second cut and between the tab and the parent part. A second neck extends between the second end of the first cut and the second end of the second cut and extends between the tab and the knockout. To remove the tab, the tab is rotated such that the two necks twist about an axis between them, until torsional fatigue fractures the necks.