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:
Mar. 03, 2015
Filed:
Jan. 24, 2012
Applicant:
Charles W. Johnson, Wytheville, VA (US);
Inventor:
Charles W. Johnson, Wytheville, VA (US);
Assignee:
ABB Technology AG, Zurich, CH;
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
H01F 27/26 (2006.01); H01F 27/24 (2006.01); H01F 30/12 (2006.01); H01F 27/28 (2006.01); H01F 3/08 (2006.01); H01F 41/02 (2006.01);
U.S. Cl.
CPC ...
H01F 27/263 (2013.01); H01F 41/02 (2013.01);
Abstract
A distribution transformer having a slot-and-tab core frame assembly. The core frame () encloses a transformer core () having at least one phase and provides compression on the core yokes and end members of the transformer to bind the assembly together. First and second clamps () of the core frame contain receiving slots () for the tabbed (), longitudinal side supports (), creating an interlock when connected. For larger transformers, the tabbed side supports may be alternatively comprised of a subassembly of end plates, cams, and tabbed locking plates, encompassing a sturdy locking mechanism.