Electrical transformer

- ABB Technology AG
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Description

FIG. 1 is a front view of an electrical transformer;

FIG. 2 is a side view of said electrical transformer;

FIG. 3 is a top view of said electrical transformer; and,

FIG. 4 is a perspective view of said electrical transformer.

Claims

The ornamental design for an electrical transformer, as shown and described.

Referenced Cited
U.S. Patent Documents
D188248 June 1960 Albright et al.
D188249 June 1960 Albright et al.
2947957 August 1960 Spindler
D202045 August 1965 Oberlin
3479563 November 1969 Roy
3781741 December 1973 Weiner
4027279 May 31, 1977 Shigehara et al.
D257342 October 14, 1980 Payne
4257027 March 17, 1981 Yasuhisa
D259040 April 28, 1981 Pierce
D290456 June 23, 1987 Burgher et al.
D294565 March 8, 1988 Makinson et al.
D324371 March 3, 1992 Patty
6185811 February 13, 2001 Perry et al.
Other references
  • ABB Inc., Power Transformers, 2003, 11 pgs.
  • ASA Trafobau GmbH, 24 pgs.
  • Koncar-Distrubutivni i Specijalni Transformatori d.d., Power Transformers, (3,2) V 01, 8 pgs.
  • SGB Starkstrom and Smit Transformers, Partners in Power, 6 pgs.
  • MF Transformation srl, Oil Filled Transformer, 14 pgs.
Patent History
Patent number: D547267
Type: Grant
Filed: Dec 19, 2006
Date of Patent: Jul 24, 2007
Assignee: ABB Technology AG
Inventors: Sigurdur Thorsteinsson (Milan), Egil Stryken (Solbergelva), Richard Tinggren (Thalwil)
Primary Examiner: Stella Reid
Assistant Examiner: Derrick Holland
Attorney: Connolly Bove Lodge & Hutz, LLP
Application Number: 29/275,260
Classifications
Current U.S. Class: Transformer, Rectifier Or Casing Therefor (3) (D13/110)