Power supply unit

Description

FIG. 1 is a top view of a first embodiment of a power supply unit according to my design;

FIG. 2 is a front view thereof;

FIG. 3 is a right side view thereof;

FIG. 4 is a bottom view thereof;

FIG. 5 is a back view thereof;

FIG. 6 is a left side view thereof;

FIG. 7 is a top view of a second embodiment of the power supply unit showing my design;

FIG. 8 is a bottom view thereof;

FIG. 9 is a front view thereof; and,

FIG. 10 is a right side view thereof.

The back and left side views of the second embodiment are not shown as they are substantially mirror images of the front and right side views, respectively.

Referenced Cited
U.S. Patent Documents
4471408 September 11, 1984 Martinez
4916519 April 10, 1990 Ward
4920074 April 24, 1990 Shimizu et al.
Foreign Patent Documents
50562 October 1991 SEX
Other references
  • SPT converters on p. 83 of Electrical Design, Nov. 25, 1992. DATEL converter on p. 90 of Electrical Design, Jan. 21, 1993.
Patent History
Patent number: D357901
Type: Grant
Filed: Mar 25, 1994
Date of Patent: May 2, 1995
Assignee: Telefonaktiebolaget LM Ericsson (Stockholm)
Inventor: Johan Horman (Hagersten)
Primary Examiner: Joel Sincavage
Law Firm: Burns, Doane, Swecker & Mathis
Application Number: 0/20,368