Electrical transformer

- ABB Technology AG
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Description

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.

Claims

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

Referenced Cited
U.S. Patent Documents
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2947957 August 1960 Spindler
D195975 August 1963 Bianco et al.
D202045 August 1965 Oberlin
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3479563 November 1969 Roy
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D222480 October 1971 Canney
3781741 December 1973 Weiner
4027279 May 31, 1977 Shigehara et al.
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D324371 March 3, 1992 Patty
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.—Date unknown.
  • Koncar-Distributivni i Specijalni Transformatori d.d., Power Transformers (3,2) V 01, 8 pgs.—Date unknown.
  • SGB Starkstrom and SMIT Transformers, Partners in Power, 6 pgs.—Date unknown.
  • MF Transformatori srl, Oil Filled Transformer, 14 pgs., Date unknown.
Patent History
Patent number: D635091
Type: Grant
Filed: Jul 22, 2010
Date of Patent: Mar 29, 2011
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: 29/366,251
Classifications
Current U.S. Class: Transformer, Rectifier Or Casing Therefor (3) (D13/110)