Smoke detector
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FIG. 1 is a top plan view of a smoke detector showing my new design;
FIG. 2 is a side elevational view thereof;
FIG. 3 is a bottom plan view thereof;
FIG. 4 is a second embodiment of the smoke detector, wherein the only difference resides in the design of the top portion as shown;
FIG. 5 is a side elevational view thereof;
FIG. 6 is a third embodiment of the smoke detector wherein the only difference resides in the design of the top portion as shown;
FIG. 7 is a fourth embodiment of the smoke detector wherein the only difference resides in the design of the top portion as shown;
FIG. 8 is a sectional view taken from line 8--8 in FIG. 7;
FIG. 9 is a fifth embodiment of the smoke detector, wherein the only difference resides in the design of the top portion as shown; and
FIG. 10 is a sectional view taken from line 10--10 in FIG. 9.
The conventional wire grille, partially shown in FIGS. 2 and 5, is understood to cover the entire area as indicated.
D225379 | December 1972 | Gallagher |
D235857 | July 1975 | Hart |
D240120 | June 1976 | Pasquarette |
D246958 | January 17, 1978 | Rakocy et al. |
Type: Grant
Filed: Sep 16, 1982
Date of Patent: Nov 20, 1984
Assignee: Pittway Corporation (Aurora, IL)
Inventor: Kenneth R. Fenne (Glen Ellyn, IL)
Primary Examiner: Wallace R. Burke
Assistant Examiner: Suzanne N. Gitlin
Law Firm: Emrich & Dithmar
Application Number: 6/418,631