Smoke detector switch indicator

Claim 1

In a fire alarm system including a circuit connecting a smoke detector with an alarm and having a power source connected in the circuit for energizing the alarm when the smoke detector senses an unsafe smoke condition, a temporary disabling and warning device for disabling the alarm and indicating the disabled condition comprising: an electrical switch in the circuit having an open circuit condition to prevent the alarm from sounding in the presence of a smoke condition, and a normally closed circuit condition in which the system is operative; and weighted disabling and indicating means operatively associated with the electrical switch and including a weight sensitive operating member connected with the electrical switch to actuate the switch between the normally closed and the open circuit condition, and a weighted actuating and indicating member releasably engageable with the weight sensitive operating member by means of a resilient coupling to actuate the electrical switch from the normally closed to the open circuit condition when the weight of the actuating and indicating member is supported by the operating member through the coupling, the resilient coupling having a resilient member maintaining the weighted actuating member and the operating member coupled together in a freely suspended condition of the actuating member, and resiliently releasing the actuating member from the operating member upon the application of a downwardly directed force to the actuating and indicating member in the suspended condition to thereby allow the electrical switch to assume the normally closed condition, the actuating and indicating member also having a visual indicator visible when the weight of the member is supported by the operating member and the circuit of the smoke detector is open.