Cover for a duct-type smoke detector

- Pittway Corporation
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Description

FIG. 1 is a front perspective view of a cover for a duct-type smoke detector showing my new design, with the broken line showing for illustrative purposes only and forming no part of the claimed design;

FIG. 2 is a top plan view thereof;

FIG. 3 is a front elevational view thereof, with the rear being unornamented;

FIG. 4 is a bottom plan view thereof;

FIG. 5 is a left side elevational view thereof; and,

FIG. 6 is a right side elevational view thereof.

Referenced Cited
U.S. Patent Documents
D248152 June 13, 1978 Hastings
D253169 October 16, 1979 Conforti
D258353 February 24, 1981 Mango et al.
D261243 October 13, 1981 Mintz et al.
D274707 July 17, 1984 French
Other references
  • EXHIBIT A-Covers Sold by Pittway Corporation. EXHIBIT B-Covers Sold by Pittway Corporation. EXHIBIT C-Air Duct Detector, Showing Cover, Sold by a Third Party.
Patent History
Patent number: D327228
Type: Grant
Filed: May 30, 1990
Date of Patent: Jun 23, 1992
Assignee: Pittway Corporation (Northbrook, IL)
Inventor: Kenneth Fenne (Glen Ellyn, IL)
Primary Examiner: Wallace R. Burke
Assistant Examiner: Marcus Jackson
Law Firm: Dressler, Goldsmith, Shore, Sutker, & Milnamow, Ltd.
Application Number: 7/530,247
Classifications
Current U.S. Class: D10/104