Portable smoke alarm

Claim 1

In a portable alarm having a smoke detecting mechanism, a signal alarm means, and a compact foraminous housing enclosing the components in a small package, an electric circuit for selectively connecting and disconnecting the smoke detecting mechanism and the alarm means for respectively arming and unarming the alarm, said electric circuit comprising: an elongated electrical lead connected at one end thereof to a selected one of said smoke detecting mechanism and said alarm means, said electrical lead extending visibly outside said housing from said one end thereof, first connector means connected to the other one of said smoke detecting mechanism and said alarm means, second connector means on the other end of said electrical lead to connect selectively to said first connector means to complete said electric circuit through said electrical lead so as to thereby arm the portable alarm, and said housing having extendable thin hanger means thereon capable of being reversed, said hanger means being adapted for hanging over a door top in open and closed door position or, upon reversal, to assume a compact position in contact with said housing, whereby said electrical lead forms a hanging appendage on the exterior of the housing to indicate in a highly visible form the armed/unarmed condition of the alarm.