Energy production unit
United States Patent D530662
US Patent References:
Battery case
Frezzolini - July, 1984 - D274513

Battery case
Blount et al. - November, 1991 - D321680

Universal camcorder battery pack
Ozer - April, 1996 - 5510205

Quick change battery pack assembly
Andrews - November, 1996 - 5573870

Fuel cell
Zimmerman - January, 1999 - D404020


Representative Image:
Energy production unit
Inventors:
Kokkonen, Ville (Helsinki, FI)
Lindfors, Niklas (Helsinki, FI)
Pesonen, Asko (Vantaa, FI)
Piira, Sampsa (Helsinki, FI)
Salonen, Mikko (Helsinki, FI)
Application Number:
D/218341
Publication Date:
10/24/2006
Filing Date:
11/30/2004
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Assignee:
Wartsila Finland Oy (Vaasa, FI)
Primary Class:
D13/101
International Classes:
(IPC1-7): 1302
Field of Search:
D23/351-352, 220/746, 220/562, D13/184, 429/176, 429/121, 429/96-100, 429/163, D13/101-103, D13/199, 220/86.2, D23/202, 429/34
US Patent References:
6455189Battery of electrochemical cells with contact elementsSeptember, 2002Nadeau et al.429/121
6674264Cell voltage detector for fuel cellJanuary, 2004Sato et al.320/101
Primary Examiner:
Reid, Stella
Assistant Examiner:
Bui, Daniel
Attorney, Agent or Firm:
Smith-Hill and Bedell
Claims:
CLAIM

1. The ornamental design for an energy production unit, as shown and described.

Description:

FIG. 1 is a perspective view from the left of an energy production unit showing our new design,

FIG. 2 is a perspective view from the right thereof,

FIG. 3 is a top plan view thereof,

FIG. 4 is a right elevation thereof,

FIG. 5 is a left elevation thereof,

FIG. 6 is a front elevation thereof; and,

FIG. 7 is a rear elevation thereof.

The broken line showing of the environment is for illustrative purposes only and forms no part of the claimed design.