Ionization chamber for a smoke detector

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Description

FIG. 1 is a top perspective view of an ionization chamber for a smoke detector showing my new design;

FIG. 2 is an enlarged top plan view thereof;

FIG. 3 is an enlarged side elevational view taken in the direction of the arrows along line 3--3 of FIG. 2;

FIG. 4 is an enlarged bottom plan view thereof;

FIG. 5 is a bottom perspective view thereof.

Referenced Cited
U.S. Patent Documents
D260378 August 25, 1981 Mallory
D270625 September 20, 1983 Hiltenbrand
3863076 January 1975 Steele et al.
3900795 August 1975 Larsen et al.
Other references
  • Alarm Supply Co., Inc., 1984, p. 147, Smoke Detectors #1769 AC-1, located in lower right corner.
Patent History
Patent number: D284272
Type: Grant
Filed: Aug 9, 1984
Date of Patent: Jun 17, 1986
Inventor: Laurence Chen (Rancho Palos Verdes, CA)
Primary Examiner: B. J. Bullock
Assistant Examiner: Suzanne N. Gitlin
Law Firm: Knobbe, Martens, Olson & Bear
Application Number: 6/639,261
Classifications
Current U.S. Class: D10/106