Detector for duct channel

- Calectro AB
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Description

FIG. 1 is a perspective view of a detector for duct channel showing our new design;

FIG. 2 is a front plan view thereof;

FIG. 3 is a top plan view thereof;

FIG. 4 is a rear elevation view thereof;

FIG. 5 is a bottom plan view thereof;

FIG. 6 is a right side elevation view thereof; and,

FIG. 7 is a left side elevation view thereof;

Claims

The ornamental design for detector for duct channel, as shown and described.

Referenced Cited
U.S. Patent Documents
D253400 November 13, 1979 Vander Wilt
D253525 November 27, 1979 Wilson
D275187 August 21, 1984 Skarman
D279769 July 23, 1985 Thornton et al.
D283407 April 15, 1986 Fenne
D314719 February 19, 1991 Gardner
D368041 March 19, 1996 Skog
20020084907 July 4, 2002 Rattman et al.
Other references
  • “UNIGUARD UG-2-A2 Stand-Alone-Unit. Smoke detector for duct installation.” Calectro, Sweden.
  • “A-Sense and UG-A-Sense. Carbon dioxide and temperature sensor. Duct or toom installation.” Calectro, Sweden.
  • Screenshot for http://www.calectro.com, showing Applicants previous UNIGUARD® models.
Patent History
Patent number: D560532
Type: Grant
Filed: May 31, 2007
Date of Patent: Jan 29, 2008
Assignee: Calectro AB (Vastra Frolunda)
Inventors: Jörgen Sahibzada (Göteborg), Stig Redgert (Göteborg)
Primary Examiner: Robert M. Spear
Assistant Examiner: George D Kirschbaum
Attorney: Birch, Stewart, Kolasch & Birch, LLP
Application Number: 29/274,856
Classifications
Current U.S. Class: D10/106