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United States Patent D656,460
Thorsteinsson ,   et al. March 27, 2012

Electrical transformer


CLAIM The ornamental design for an electrical transformer, as shown and described.
Inventors: Thorsteinsson; Sigurdur (Milan, IT), Stryken; Egil (Solbergelva, NO), Tinggren; Richard (Thalwil, CH)
Assignee: ABB Technology AG (Zurich, CH)
Appl. No.: D/385,962
Filed: February 23, 2011

Related U.S. Patent Documents

Application NumberFiling DatePatent NumberIssue Date
29366251Jul., 2010D635091
29356632Mar., 2010D622214
29336557May., 2009D613687
29317370Apr., 2008D594408
29282093Jul., 2007D570282
29275256Dec., 2006D550155
29204775May., 2004D542734

Foreign Application Priority Data

Nov 12, 2003 [EM] 000102397

Current U.S. Class: D13/110
Current International Class: 1302
Field of Search: D13/110,101,199 174/52R 220/4.02 336/58,92,94,98,107 363/153,171

References Cited

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Other References

ABB Inc., Power Transformers, 2003, 11 pgs. cited by other .
ASA Trafobau GmbH, 24 pgs.--Date unknown. cited by other .
Koncar-Distributivni i Specijalni Transformatori d.d., Power Transformers (3,2) V 01, 8 pgs.--Date unknown. cited by other .
SGB Starkstrom and SMIT Transformers, Partners in Power, 6 pgs.--Date unknown. cited by other .
MF Transformatori srl, Oil Filled Transformer, 14 pgs., Date unknown. cited by other.

Primary Examiner: Holland; Derrick
Attorney, Agent or Firm: Connolly Bove Lodge & Hutz LLP


This application is also related to U.S. application Ser. No. 29/275,260, filed Dec. 19, 2006 (now Pat. No. D547,267).

FIG. 1 is a front elevation view of an electrical transformer showing our new design;

FIG. 2 is a top plan view thereof;

FIG. 3 is a left side elevation view thereof; and,

FIG. 4 is a perspective view thereof.

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