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"What can be more palpably absurd than the prospect held out of locomotives traveling twice as fast as stagecoaches?"
The Quarterly Review ; March edition, 1825
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| Number | Title | Issue Date |
| 6653931 | Picture frame or doorbell having warning function A picture frame or a doorbell having warning function includes a main body consisting of a front housing, a rear housing and a transparent plate for placing photos or pictures. The main body is provided with a sensor hole, a speaker, an electronic control... | 11/25/2003 |
| 6646545 | Color-coded evacuation signaling system A battery powered, illuminated, color-coded evacuation signalling system embodying symbols and text messages in any language or combination of languages, configured by LED's in a network of floor laid display units installed in land-based buildings or mar... | 11/11/2003 |
| 6507281 | Method and device for configuring a tunnel fire detection system A system and method are provided for configuring a tunnel fire detection system including a linear heat sensor. The fire detection system is configured based on a plurality of tunnel parameters describing the tunnel, a plurality of sensor parameters descr... | 01/14/2003 |
| 6472980 | Device with built-in signal discrimination and output synchronization circuits An electrical unit, such as an ambient condition detector, incorporates pattern discrimination circuitry. A received pattern is analyzed and, if it is in accordance with a predetermined pattern, the unit outputs an audible and/or visible indicium synchron... | 10/29/2002 |
| 6380846 | Pull station A pull station for an alarm includes a housing with a handle mounted for sliding movement within the housing. The housing includes a window for a user to access the handle for forcibly sliding the handle in a vertical direction. A latch is rotatably mount... | 04/30/2002 |
| 6344799 | Location specific alarm relay (L.S.A.R) An indexed database alarm and monitor, for assigning each unit of a multiple unit system a labeled index of pre-selected designations, and or descriptions of use by voice-playback and reporting, by voice-playback of first detecting units designation and o... | 02/05/2002 |
| 6326880 | Detector with control switch An ambient condition detector incorporates a control switch which can be actuatable by one of a plurality of circumstances. In a response to an actuated switch, control circuitry of the detector selects at least one predetermined function or process to ca... | 12/04/2001 |
| 6249221 | Emergency detector door illumination escape system An escape system for aiding a person in finding an exit door in the event of an emergency situation of limited visibility. The escape system can includes at least one heat detector and at least one smoke detector, an audible alarm circuitry, a dynamic pul... | 06/19/2001 |
| 6121885 | Combination smoke detector and severe weather warning device A combination smoke detector and severe weather warning device is housed in a common housing, such as a housing resembling that for a conventional smoke detector. The combination device includes a smoke detector and alarm for sensing smoke and/or fire in ... | 09/19/2000 |
| 6114948 | Safety apparatus for providing information to a fire fighter A safety apparatus is disclosed for providing information to a fire fighter concerning the number of occupants of each room of a dwelling in the event of a fire. The apparatus includes an activator disposed externally relative to the dwelling, the activat... | 09/05/2000 |
| 6104301 | Hazard detection, warning, and response system The invention provides a self-contained automatic fire detection, warning, and suppression life safety system having an extinguishant source and a fire detector coupled to an electronic processor. The processor has logic to interface with components for d... | 08/15/2000 |
| 6057774 | Smoke alarm with anti-dust screen Smoke alarms that incorporate dust repelling screens exhibit improved performance with fewer false alarms. Effective screens include conductive strands combined with non-conductive elements.... | 05/02/2000 |
| 5990796 | Flash and voice warning system A flash and voice warning system generally comprises a power supply with charging circuit, a smoke sensor power supply and auto reset circuit, a smoke sensor (or manual operation), a circuit for converting current to voltage, a single-chip microprocessor,... | 11/23/1999 |
| 5982274 | Paperless pressure and alarm recorder A paperless recorder for recording pressure and alarm condition data from a fire controller for a fire pump control system. The fire pump is connected a pipe network which has a pressure sensor for sensing pipe pressure. The recorder is connected to the p... | 11/09/1999 |
| 5955939 | Alarm station protector capable of being accessed by disabled individuals An improved alarm activation station protector for use with a depressible alarm activating member and which is capable of being accessed by individuals with varying degrees of hand and arm disability. A wall mounted frame member is formed in a generally "... | 09/21/1999 |
| 5898363 | Portable audible beacon A portable audible beacon comprises a housing that encloses a signal generating means and an acoustic transducer. The signal generating means generates an oscillating signal that is periodically interrupted by a zero signal, where the fundamental frequenc... | 04/27/1999 |
| 5896082 | Fire detection system An intelligent fire detection system is disclosed which includes a control panel and a plurality of detectors distributed throughout the building being protected. The software of the panel treats the detectors as being in one or more groups. All the detec... | 04/20/1999 |
| 5883577 | Multi station smoke detectors A smoke detector that comprises three different power sources. First one is the 110/220 volt AC house current, through a step down transformer or that can be hard wired into the home or factory. Second one is a moveable 9 volts rechargeable backup battery... | 03/16/1999 |
| 5867110 | Information reporting system There is disclosed an information reporting system comprising a communication host apparatus including a database storing a plurality of data sets each concerning predetermined position, and a host computer, and at least one portable terminal including a ... | 02/02/1999 |
| 5818326 | Early fire detection using temperature and smoke sensing A fire detection system cross correlates the responses of a temperature and smoke sensing units to achieve early-detection characteristics. The system also performs threshold-type detection on the smoke obscuration, temperature, and rate of temperature ri... | 10/06/1998 |
| 5808541 | Hazard detection, warning, and response system The invention provides a self-contained automatic fire detection, warning, and suppression life safety system having an extinguishant source and a fire detector coupled to an electronic processor. The processor has logic to interface with components for d... | 09/15/1998 |
| 5793882 | System and method for accounting for personnel at a site and system and method for providing personnel with information about an emergency site A personnel accountability system accounting for personnel reporting to a site. The personnel accountability system includes an information receiving device, a processor, and a display. The information receiving device is provided for receiving informatio... | 08/11/1998 |
| 5786756 | Method and system for the prevention of false alarms in a fire alarm system A fire alarm system comprises detectors with sensors for monitoring fire index quantities. The sensors generate corresponding sensor signals which are delivered to an analysis stage, in which the probability of a future false alarm is assessed and, if a d... | 07/28/1998 |
| 5774038 | Safety monitor The present invention relates to a improved safety monitor (10) which comprises a main monitor (12) and a remote monitor (14) which are in two way communication with each other. The main monitor (12) has a main monitor detector (12J) and a main monitor fi... | 06/30/1998 |
| 5751209 | System for the early detection of fires A fire detection system contains several detectors connected to a control center, some of which are fitted with at least two sensors for monitoring different fire parameters. Preferably, one sensor is a thermal sensor and another is an optical sensor. An ... | 05/12/1998 |
| 5748072 | Apparatus for fire protection An apparatus for protecting house or building from fire in neighborhood or area close by is described. When fire detecting system 16 detects a fire at a position close to house 14, computer 20 will send instruction to motor 18 and motor 18 will unfold fol... | 05/05/1998 |
| 5724020 | Voice warning system for fire accidents A voice warning system for fire accidents including a plurality of fire sensors, a first multiplex selector, a detecting and scanning circuit, a locking circuit, a decoding circuit, a memory circuit, a second multiplex selector, a scanning circuit, a load... | 03/03/1998 |
| 5701115 | Field programmable module personalities There is provided an alarm system for detecting and warning of the presence of alarm and trouble conditions in a plurality of zones. The system comprises a loop controller having supply lines extending to the plurality of zones and a module connected to t... | 12/23/1997 |
| 5650762 | Fire alarm system A transmitter for use with a fire alarm system controls the monitoring of devices to be controlled based on a control command transmitted from a receiving section such as a fire receiver. With this transmitter, even if there is a short circuit in control ... | 07/22/1997 |
| 5608375 | Synchronized visual/audible alarm system An audio/visual alarm system which includes multiple microprocessor-controlled alarm units connected in a common loop to a fire alarm control panel and an interface control circuit. The interface control circuit causes brief interruptions in power to the ... | 03/04/1997 |
| 5400009 | Synchronization circuit for visual/audio alarms A strobe alarm system which includes multiple normally self-timed strobe circuits connected in a common loop to a fire alarm control panel, and a sync control circuit, which may be incorporated in the fire alarm control panel, for causing the strobes to f... | 03/21/1995 |
| 4489308 | Emergency exit indicators A system for identifying emergency exits in a building includes a strobe light which is tethered at an elevated location with respect to the floor of the building. The strobe light is normally held at the elevated position by an electromagnet, which elect... | 12/18/1984 |
| 4427974 | Local control apparatus for central station alarm system In a central station alarm system the alarm sensors associated with a particular subscriber's premises are monitored by a local control unit associated with those premises and controllable by the subscriber. The local control unit automatically reminds th... | 01/24/1984 |
