Electrical transformer

- ABB Technology AG
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Description

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

FIG. 2 is a top view thereof;

FIG. 3 is a side view thereof;

FIG. 4 is a perspective view thereof;

FIG. 5 is a front view of a second embodiment thereof;

FIG. 6 is a top view thereof;

FIG. 7 is a side view thereof;

FIG. 8 is a perspective view thereof;

FIG. 9 is a front view of a third embodiment thereof;

FIG. 10 is a top view thereof;

FIG. 11 is a side view thereof; and,

FIG. 12 is a perspective view thereof.

Claims

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

Referenced Cited
U.S. Patent Documents
2325470 July 1943 Bonanno et al.
D188248 June 1960 Albright et al.
D188249 June 1960 Albright et al.
2947957 August 1960 Spindler
D202045 August 1965 Oberlin
3479563 November 1969 Roy
4027279 May 31, 1977 Shigehara et al.
D254846 April 29, 1980 Wood
D257342 October 14, 1980 Payne
D259040 April 28, 1981 Pierce
D290456 June 23, 1987 Burgher et al.
D348868 July 19, 1994 Terlop et al.
6185811 February 13, 2001 Perry et al.
Other references
  • ABB Inc., Power Transformers, 2003, 11 pgs.
  • ASA Trafobau GmbH, 24 pgs.
  • Koncar-Distributivni I Specijalni Transformatori d.d., Power Transformers, (3,2) V 01, 8 pgs.
  • SGB Starkstrom and SMIT Transformers, Partners in Power, 6 pgs.
  • MF Transformatori srl, Oil Filled Transformer, 14 pgs.
Patent History
Patent number: D594408
Type: Grant
Filed: Apr 29, 2008
Date of Patent: Jun 16, 2009
Assignee: ABB Technology AG (Zurich)
Inventors: Sigurdur Thorsteinsson (Milan), Egil Stryken (Solbergelva), Richard Tinggren (Thalwil)
Primary Examiner: Prabhakar Deshmukh
Assistant Examiner: Derrick Holland
Attorney: Connolly Bove Lodge & Hutz LLP
Application Number: 29/317,370
Classifications
Current U.S. Class: Transformer, Rectifier Or Casing Therefor (3) (D13/110)