Goods & Services

Devices and instruments in the field of fire safety technology; fire and smoke detecting apparatus; fire and smoke detection installations; fire and smoke alarm apparatus; heat detecting apparatus; combined fire, heat and smoke alarm apparatus and combined fire, heat and smoke detection apparatus; fire break-glass call points and units; fire extinguishing apparatus; fire, heat and smoke protection and safety apparatus and devices; signalling and control apparatus, systems, equipment, installations and instruments; lifesaving and emergency indication, evacuation, signalling and control apparatus; voice alarms and voice transmission apparatus; emergency evacuation apparatus, equipment, alarms and controls; lifesaving and emergency indication, evacuation, signalling and control apparatus, alarms, equipment, installations and instruments; parts and fittings for all of the aforesaid goods.

Goods & Services

Devices and instruments in the field of fire safety technology; fire and smoke detecting apparatus; fire and smoke detection installations; fire and smoke alarm apparatus; heat detecting apparatus; combination fire, heat and smoke alarm and detecting apparatus; fire break-glass call points and units; fire extinguishing apparatus; fire, heat and smoke protection and safety apparatus and devices; signalling and control apparatus, systems, equipment, installations and instruments; lifesaving and emergency indication, evacuation, signalling and control apparatus; voice alarms and voice transmission apparatus; emergency evacuation apparatus, equipment, alarms and controls; lifesaving and emergency indication, evacuation, signalling and control apparatus, alarms, equipment, installations and instruments; parts and fittings for all of the aforesaid goods.

Goods & Services

Devices and instruments in the field of fire safety technology; fire and smoke detecting apparatus; fire and smoke detection installations; fire and smoke alarm apparatus; heat detecting apparatus; combination fire, heat and smoke alarm and detecting apparatus; fire break-glass call points and units; fire extinguishing apparatus; fire, heat and smoke protection and safety apparatus and devices; signalling and control apparatus, systems, equipment, installations and instruments; lifesaving and emergency indication, evacuation, signalling and control apparatus; voice alarms and voice transmission apparatus; emergency evacuation apparatus, equipment, alarms and controls; lifesaving and emergency indication, evacuation, signalling and control apparatus, alarms, equipment, installations and instruments; parts and fittings for all of the aforesaid goods.

Abstract

th order differential to determine the extent of an initial curvature of a line of the output of a sensor of the detector with respect to time and a correction unit operable to correct an output of the sensor based on the measurement. The correction system can compensate for impairment of the sensor and results in more accurate sensor readings (and accordingly a more useful fire system).

IPC Classes  ?

• G01K 1/20 - Compensating for effects of temperature changes other than those to be measured, e.g. changes in ambient temperature
• G01D 3/036 - Measuring arrangements with provision for the special purposes referred to in the subgroups of this group mitigating undesired influences, e.g. temperature, pressure on measuring arrangements themselves
• G08B 29/18 - Prevention or correction of operating errors
• G08B 29/24 - Self-calibration, e.g. compensating for environmental drift or ageing of components

Goods & Services

Alarm systems for buildings; fire and smoke alarms; alarm system and fire and smoke alarm controls and interfaces; parts and fittings for all the aforesaid goods.

Goods & Services

Alarm systems for buildings; fire and smoke alarms; alarm system and fire and smoke alarm controls and interfaces; parts and fittings for all the aforesaid goods.

Goods & Services

Alarms and warning equipment; Signalling apparatus; Fire control apparatus; Life-saving apparatus and instruments; Detection apparatus; Smoke detection apparatus; Fire detection apparatus; Sensors, detectors and monitoring instruments; Checking (supervision) apparatus and instruments; testing and monitoring apparatus; fire-extinguishing apparatus; components for all the aforesaid goods.

Abstract

A smoke detector of the type that depends on the scattering of light by smoke particles comprising a chamber (301) configured to receive smoke particles from an environment in which the smoke detector is required to detect smoke, a source of light (202) configured to project light therefrom such that light that is received by the chamber is scattered by the smoke particles, an optical element (207) configured to receive light as has been scattered by the smoke particles, and, a photodetector (208) configured to detect at least some of the received scattered light, the smoke detector characterized in that upon receiving the scattered light, the optical element (207) is configured to selectively differentiate between required scattered light that is derived from a subset of predefined directions with respect to the angle of incidence upon the optical element and scattered light that is derived from other directions in order to thereby filter out the light that is not required and thereby redirect the required scattered light onto the photodetector (208).

IPC Classes  ?

• G01N 21/53 - Scattering, i.e. diffuse reflection within a body or fluid within a flowing fluid, e.g. smoke
• G08B 17/107 - Actuation by presence of smoke or gases using a light emitting and receiving device for detecting light-scattering due to smoke

Goods & Services

Alarms (Fire-); Alarms and warning equipment; Signalling apparatus; Fire control apparatus; Life-saving apparatus and instruments; Detection apparatus; Smoke detection apparatus; Fire detection apparatus; Sensors, detectors and monitoring instruments; Checking (supervision) apparatus and instruments; testing apparatus and instruments; monitoring apparatus and instruments; fire-extinguishing apparatus; components for all the aforesaid goods.

Goods & Services

Alarms (Fire-); Alarms and warning equipment; Signalling apparatus; Fire control apparatus; Life-saving apparatus and instruments; Detection apparatus, not including bio-scientific and biological diagnostic apparatus; Smoke detection apparatus; Fire detection apparatus; Sensors, detectors and monitoring instruments; Checking (supervision) apparatus and instruments; testing and monitoring apparatus, not including bio-scientific and biological apparatus; fire-extinguishing apparatus; components for all the aforesaid goods.

Goods & Services

Alarms (Fire-); Alarms and warning equipment; Signalling apparatus; Fire control apparatus; Life-saving apparatus and instruments; Detection apparatus; Smoke detection apparatus; Fire detection apparatus; Sensors, detectors and monitoring instruments; Checking (supervision) apparatus and instruments; testing and monitoring apparatus; fire-extinguishing apparatus; components for all the aforesaid goods.

Abstract

A smoke detector of the type that depends on the scattering of light by smoke particles comprising a chamber (301) configured to receive smoke particles from an environment in which the smoke detector is required to detect smoke, a source of light (202) configured to project light therefrom such that light that is received by the chamber is scattered by the smoke particles, an optical element (207) configured to receive light as has been scattered by the smoke particles, and, a photodetector (208) configured to detect at least some of the received scattered light, the smoke detector characterized in that upon receiving the scattered light, the optical element (207) is configured to selectively differentiate between required scattered light that is derived from a subset of predefined directions with respect to the angle of incidence upon the optical element and scattered light that is derived from other directions in order to thereby filter out the light that is not required and thereby redirect the required scattered light onto the photodetector (208).

IPC Classes  ?

• G08B 17/107 - Actuation by presence of smoke or gases using a light emitting and receiving device for detecting light-scattering due to smoke

Goods & Services

Fire detecting, indication, signalling and control apparatus, systems, equipment, installations and instruments; Fire evacuation systems; Emergency evacuation apparatus, alarms, equipment, controls; Life saving and emergency indication, evacuation, signalling and control apparatus, alarms, equipment, installations and instruments; Parts, accessories and fittings for fire evacuation systems; Life saving and emergency indication, evacuation, signalling and control apparatus; Alarms; Alarm central units; Alarm systems; Alarm panels; Fire alarms; Alarm signalling receivers; Fire detection apparatus; Warning indicating apparatus [other than for vehicles]; Fire control apparatus; Fire sensors.

Abstract

A method of measuring an unknown resistance (160a, b) in a circuit, such as a fire alarm circuit, where the resistance is connected in series with a load (310). The method involves connecting the circuit to a charged capacitor (211); measuring the potential difference across the load; forcing a known current through the circuit and, whilst forcing the known current, measuring the potential difference across the load at two points in time; using said measured potential differences to derive, by extrapolation, the potential difference across the load at an earlier point in time at which current was being forced across the load; determining the difference between the derived potential difference at the earlier point in time and the potential difference when no current is forced across the load; and combining the difference between the two potential differences with the known current to determine the unknown series resistance. The method may be implemented by an end of line device (300). The capacitor may be connected across the terminals of a power supply to which the circuit is connected (110).

IPC Classes  ?

• G01R 27/14 - Measuring resistance by measuring current or voltage obtained from a reference source
• G08B 29/06 - Monitoring of the line circuits, e.g. signalling of line faults
• G08B 29/08 - Signalling of tampering with the line circuit
• G08B 29/12 - Checking intermittently signalling or alarm systems
• G01R 31/02 - Testing of electric apparatus, lines, or components for short-circuits, discontinuities, leakage, or incorrect line connection

Goods & Services

Devices and instruments in the field of fire safety technology; Fire and smoke detectiong apparatus, fire and smoke detection installations; fire and smoke alarm apparatus, heat detecting apparatus, combination fire, heat and smoke alarm and detecting apparatus, fire break-glass call points and units; fire extinguishing apparatus; fire, heat and smoke protection and safety apparatus and devices; life saving and emergency indication, evacuation, signalling and control apparatus; parts and fittings for all the aforesaid.

Goods & Services

Instruments in the field of fire safety technology; fire detecting, indication, signalling and control apparatus, systems, equipment, installations and instruments; voice alarms and voice transmission apparatus; emergency evacuation apparatus, equipment, alarms and controls; life saving and emergency indication, evacuation, signalling and control apparatus, alarms, equipment, installations and instruments; parts, accessories and fittings for all the aforesaid; none of the aforesaid goods in relation to elevators, escalators, moving walks.

Goods & Services

Devices and instruments in the field of fire safety technology; fire and smoke detecting apparatus, fire and smoke detection installations; fire and smoke alarm apparatus, heat detecting apparatus, combination fire, heat and smoke alarm and detecting apparatus, fire break-glass call points and units; fire extinguishing apparatus; fire, heat and smoke protection and safety apparatus and devices; signalling and control apparatus, systems, equipment, installations and instruments; life saving and emergency indication, evacuation, signalling and control apparatus, voice alarms and voice transmission apparatus; emergency evacuation apparatus, equipment, alarms and controls; life saving and emergency indication, evacuation, signalling and control apparatus, alarms, equipment, installations and instruments; parts and fittings for all the aforesaid.

Goods & Services

Instruments in the field of fire safety technology; fire detecting, indication, signalling and control apparatus, systems, equipment, installations and instruments; voice alarms and voice transmission apparatus; emergency evacuation apparatus, equipment, alarms and controls; life saving and emergency indication, evacuation, signalling and control apparatus, alarms, equipment, installations and instruments; parts, accessories and fittings for all the aforesaid.

Goods & Services

Devices and instruments in the field of fire safety technology; fire and smoke detecting apparatus, fire and smoke detection installations; fire and smoke alarm apparatus, heat detecting apparatus, combination fire, heat and smoke alarm and detecting apparatus, fire break-glass call points and units; fire extinguishing apparatus; fire, heat and smoke protection and safety apparatus and devices; signalling and control apparatus, systems, equipment, installations and instruments; life saving and emergency indication, evacuation, signalling and control apparatus, voice alarms and voice transmission apparatus; emergency evacuation apparatus, equipment, alarms and controls; life saving and emergency indication, evacuation, signalling and control apparatus, alarms, equipment, installations and instruments; parts and fittings for all the aforesaid.

Goods & Services

Devices and instruments in the field of fire safety technology; Fire and smoke detectiong apparatus, fire and smoke detection installations; fire and smoke alarm apparatus, heat detecting apparatus, combination fire, heat and smoke alarm and detecting apparatus, fire break-glass call points and units; fire extinguishing apparatus; fire, heat and smoke protection and safety apparatus and devices; life saving and emergency indication, evacuation, signalling and control apparatus; parts and fittings for all the aforesaid.