Lightpipe

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Description

FIG. 1 is a perspective view of a lightpipe embodying the features of the design;

FIG. 2 is an opposite perspective view showing the roughened rectangular surfaces of the lightpipe thereof;

FIG. 3 is a front elevation thereof to a slightly smaller scale;

FIG. 4 is a rear elevation thereof;

FIG. 5 is a plan view; and,

FIG. 6 is a right side elevation thereof drawn to a larger scale.

Referenced Cited
U.S. Patent Documents
5418384 May 23, 1995 Yamana et al.
5613750 March 25, 1997 Roe
5938324 August 17, 1999 Salmon et al.
6045249 April 4, 2000 Bellinghausen et al.
Patent History
Patent number: D428659
Type: Grant
Filed: Aug 12, 1998
Date of Patent: Jul 25, 2000
Assignee: Nortel Networks Corporation (Montreal)
Inventors: Mark Sonderegger (Kanata), Pak-Jong Chu (Nepean), Michael Brown (Orleans)
Primary Examiner: Ian Simmons
Application Number: 0/92,093
Classifications
Current U.S. Class: Light Fixture (D26/24)
International Classification: 2604;