Classifications

• • G—PHYSICS
  • G01—MEASURING; TESTING
  • G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
  • G01N21/00—Investigating or analysing materials by the use of optical means, i.e. using sub-millimetre waves, infrared, visible or ultraviolet light
  • G01N21/17—Systems in which incident light is modified in accordance with the properties of the material investigated
  • G01N21/47—Scattering, i.e. diffuse reflection
  • G01N21/49—Scattering, i.e. diffuse reflection within a body or fluid
  • G01N21/53—Scattering, i.e. diffuse reflection within a body or fluid within a flowing fluid, e.g. smoke
• • G—PHYSICS
  • G05—CONTROLLING; REGULATING
  • G05D—SYSTEMS FOR CONTROLLING OR REGULATING NON-ELECTRIC VARIABLES
  • G05D23/00—Control of temperature
  • G05D23/01—Control of temperature without auxiliary power
  • G05D23/02—Control of temperature without auxiliary power with sensing element expanding and contracting in response to changes of temperature
  • G05D23/08—Control of temperature without auxiliary power with sensing element expanding and contracting in response to changes of temperature with bimetallic element
• • G—PHYSICS
  • G08—SIGNALLING
  • G08B—SIGNALLING OR CALLING SYSTEMS; ORDER TELEGRAPHS; ALARM SYSTEMS
  • G08B17/00—Fire alarms; Alarms responsive to explosion
  • G08B17/10—Actuation by presence of smoke or gases, e.g. automatic alarm devices for analysing flowing fluid materials by the use of optical means
  • G08B17/103—Actuation by presence of smoke or gases, e.g. automatic alarm devices for analysing flowing fluid materials by the use of optical means using a light emitting and receiving device
• • G—PHYSICS
  • G08—SIGNALLING
  • G08B—SIGNALLING OR CALLING SYSTEMS; ORDER TELEGRAPHS; ALARM SYSTEMS
  • G08B17/00—Fire alarms; Alarms responsive to explosion
  • G08B17/10—Actuation by presence of smoke or gases, e.g. automatic alarm devices for analysing flowing fluid materials by the use of optical means
  • G08B17/11—Actuation by presence of smoke or gases, e.g. automatic alarm devices for analysing flowing fluid materials by the use of optical means using an ionisation chamber for detecting smoke or gas
  • G08B17/113—Constructional details

Landscapes

• General Physics & Mathematics (AREA)
• Physics & Mathematics (AREA)
• Chemical & Material Sciences (AREA)
• Analytical Chemistry (AREA)
• Business, Economics & Management (AREA)
• Emergency Management (AREA)
• Health & Medical Sciences (AREA)
• Automation & Control Theory (AREA)
• Engineering & Computer Science (AREA)
• Life Sciences & Earth Sciences (AREA)
• Biochemistry (AREA)
• General Health & Medical Sciences (AREA)
• Immunology (AREA)
• Pathology (AREA)
• Investigating Or Analysing Materials By Optical Means (AREA)
• Fire-Detection Mechanisms (AREA)
• Outer Garments And Coats (AREA)
• Helmets And Other Head Coverings (AREA)

Applications Claiming Priority (1)

Publications (1)

Family

ID=20291970

Family Applications (1)

Country Status (8)

Families Citing this family (5)

Family Cites Families (2)

• 1970
  • 1970-07-24 SE SE10237/70A patent/SE335080B/xx unknown
• 1971
  • 1971-06-17 FI FI1709/71A patent/FI53521C/fi active
  • 1971-07-06 DE DE19712134563 patent/DE2134563A1/de active Pending
  • 1971-07-15 GB GB3337871A patent/GB1342266A/en not_active Expired
  • 1971-07-23 NO NO02814/71A patent/NO126936B/no unknown
  • 1971-07-23 CH CH1085671A patent/CH539902A/de not_active IP Right Cessation
  • 1971-07-23 FR FR7127021A patent/FR2104804B1/fr not_active Expired
  • 1971-07-23 DK DK365271AA patent/DK127616B/da unknown

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