Smoke detector
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.