Combination smoke and heat detector alarm
AssigneeEvergard Fire Alarm Co., Inc.
InventorSidney Jacoby
Life of this patent
Estimating the term…
Abstract
A combination smoke and heat detector alarm including a self contained stored energy source in the form of a cylinder of compressed gas. A T-fitting connects to the cylinder and feeds separate conduit systems leading to individual sounding devices. A fusible element is interposed in one of the conduit systems to automatically permit transfer of the compressed gas to a first sounding device upon the presence of elevated temperatures. A solenoid operated switch is interposed in the other conduit system to normally prevent the flow of gas. The solenoid is responsive to a smoke detector and is wired to open the solenoid valve upon sensing the presence of a predetermined concentration of smoke.
Claims12
In a combination smoke and heat detector alarm, the combination of
- A. a self contained source of energy,
- 1. said source including an energy outlet,
- 2. said source being compressed gas;
- B. a first conduit system communicating with the outlet,
- 1. said first conduit system including a first sounding device, said first sounding device being a gas operated horn,
- 2. said first conduit system including first valve means to regulate the flow of energy from the source to the first sounding device,
- 3. said first valve means being movable by non-electrical energy from a closed condition to an open condition upon sensing a predetermined high temperature in the vicinity of the alarm;
- and
- C. a second conduit system communicating with the said outlet,
- 1. said second conduit system including a second sounding device, said second sounding device being a gas operated horn,
- 2. said second conduit system including second valve means to regulate the flow of energy from the source to the second sounding device,
- 3. said second valve means being movable by electrical energy from a closed position to an open position upon sensing a predetermined quantity of smoke in the vicinity of the alarm.
The alarm of claim 13 wherein wherein the means to increase include means to function the first and second sounding devices simultaneously.
Dependencies are inferred from the claim text.