Smoke detecting photoelectric sensing chamber

- Isotec Industries Limited

FIG. 1 is a rear and top perspective view of a smoke detecting photoelectric sensing chamber showing my new design;

FIG. 2 is a front and bottom perspective view thereof;

FIG. 3 is a top plan view thereof;

FIG. 4 is a bottom plan view thereof;

FIG. 5 is a rear elevational view thereof;

FIG. 6 is a front elevational view thereof.

Referenced Cited
U.S. Patent Documents
D270625 September 20, 1983 Hiltenbrand
3555532 January 1971 White et al.
3579216 May 1971 Vasel
3723747 March 1973 Steele
3976891 August 24, 1976 Parkinson
Patent History
Patent number: D277558
Type: Grant
Filed: Jan 24, 1983
Date of Patent: Feb 12, 1985
Assignee: Isotec Industries Limited (Toronto)
Inventor: John Mallory (Mississauga)
Primary Examiner: B. J. Bullock
Assistant Examiner: Suzanne N. Gitlin
Law Firm: Sim & McBurney
Application Number: 6/460,396
Current U.S. Class: D10/106