NL99411C - - Google Patents
Info
- Publication number
- NL99411C NL99411C NL99411DA NL99411C NL 99411 C NL99411 C NL 99411C NL 99411D A NL99411D A NL 99411DA NL 99411 C NL99411 C NL 99411C
- Authority
- NL
- Netherlands
Links
Classifications
-
- G—PHYSICS
- G01—MEASURING; TESTING
- G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
- G01N27/00—Investigating or analysing materials by the use of electric, electrochemical, or magnetic means
- G01N27/62—Investigating or analysing materials by the use of electric, electrochemical, or magnetic means by investigating the ionisation of gases, e.g. aerosols; by investigating electric discharges, e.g. emission of cathode
- G01N27/64—Investigating or analysing materials by the use of electric, electrochemical, or magnetic means by investigating the ionisation of gases, e.g. aerosols; by investigating electric discharges, e.g. emission of cathode using wave or particle radiation to ionise a gas, e.g. in an ionisation chamber
- G01N27/66—Investigating or analysing materials by the use of electric, electrochemical, or magnetic means by investigating the ionisation of gases, e.g. aerosols; by investigating electric discharges, e.g. emission of cathode using wave or particle radiation to ionise a gas, e.g. in an ionisation chamber and measuring current or voltage
-
- 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
- Chemical & Material Sciences (AREA)
- Physics & Mathematics (AREA)
- General Physics & Mathematics (AREA)
- Health & Medical Sciences (AREA)
- Analytical Chemistry (AREA)
- Biochemistry (AREA)
- Life Sciences & Earth Sciences (AREA)
- Electrochemistry (AREA)
- Chemical Kinetics & Catalysis (AREA)
- General Health & Medical Sciences (AREA)
- Toxicology (AREA)
- Immunology (AREA)
- Pathology (AREA)
- Business, Economics & Management (AREA)
- Emergency Management (AREA)
- Other Investigation Or Analysis Of Materials By Electrical Means (AREA)
- Measurement Of Radiation (AREA)
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
CH854594X | 1957-01-25 |
Publications (1)
Publication Number | Publication Date |
---|---|
NL99411C true NL99411C (xx) |
Family
ID=4542563
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
NL99411D NL99411C (xx) | 1957-01-25 |
Country Status (6)
Country | Link |
---|---|
US (1) | US2994768A (xx) |
CH (1) | CH346795A (xx) |
DE (1) | DE1046372B (xx) |
FR (1) | FR1198450A (xx) |
GB (1) | GB854594A (xx) |
NL (1) | NL99411C (xx) |
Families Citing this family (18)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US3102200A (en) * | 1959-05-29 | 1963-08-27 | Gen Electric | Penetrating radiation measurement by ionization of a particle bearing aerosol |
GB929883A (en) * | 1960-01-26 | 1963-06-26 | Nat Res Dev | Improvements in or relating to the detection and/or analysis of low concentrations of gases and vapour |
DE1133921B (de) * | 1960-04-05 | 1962-07-26 | Hans Christoph Siegmann Dipl P | Anordnung zur relativen Bestimmung des Staubgehaltes der Luft unter Anwendung einer ein radioaktives Praeparat enthaltenden Ionisationskammer |
US3185845A (en) * | 1961-02-15 | 1965-05-25 | Continental Oil Co | Method of and apparatus for analyzing chemical compounds |
NL286979A (xx) * | 1962-01-10 | 1900-01-01 | ||
FR1403080A (fr) * | 1964-05-08 | 1965-06-18 | Centre Nat Rech Scient | Dispositif de mesure de la pression atmosphérique dans une large gamme de pression |
FR1540305A (fr) * | 1967-02-09 | 1968-09-27 | Dispositif perfectionné de détection d'incendie | |
FR1568048A (xx) * | 1968-01-19 | 1969-05-23 | ||
GB1280304A (en) * | 1968-09-26 | 1972-07-05 | Hochiki Co | A smoke sensing detector for smoke sensing apparatus |
USRE30323E (en) * | 1968-09-26 | 1980-07-01 | Hochiki Kabushiki Kaisha | Smoke detector adapted to a smoke sensing apparatus |
CH597659A5 (xx) * | 1976-02-06 | 1978-04-14 | Cerberus Ag | |
US4027165A (en) * | 1976-02-17 | 1977-05-31 | The United States Of America As Represented By The United States Energy Research And Development Administration | Ionization detection system for aerosols |
US4168497A (en) * | 1976-03-15 | 1979-09-18 | Cerberus Ag | Fire and smoke sensing system |
US4185196A (en) * | 1978-01-13 | 1980-01-22 | General Electric Company | Ionization smoke detector having improved stability and sensitivity |
US4245174A (en) * | 1978-04-24 | 1981-01-13 | Isotec Industries Limited | Dual ionization chamber |
US4213047A (en) * | 1978-10-25 | 1980-07-15 | General Signal Corporation | Smoke detector having unipolar ionization chamber |
US4362941A (en) * | 1981-01-26 | 1982-12-07 | Honeywell Inc. | Apparatus and a method for detecting and measuring trace gases in air or other gaseous background |
WO1998052484A1 (de) | 1997-05-20 | 1998-11-26 | Leica Mikroskopie Systeme Ag | Stativ, insbesondere für ein operationsmikroskop |
Family Cites Families (4)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US2408051A (en) * | 1942-04-04 | 1946-09-24 | American District Telegraph Co | Fire and smoke detector and the like |
US2594777A (en) * | 1950-07-14 | 1952-04-29 | Ionics | Ion controller |
US2785312A (en) * | 1953-09-21 | 1957-03-12 | Ionaire Inc | Ion generator using radioactive material |
US2702898A (en) * | 1953-10-06 | 1955-02-22 | Electro Watt Electrical And In | Gas-responsive control apparatus |
-
0
- NL NL99411D patent/NL99411C/xx active
-
1957
- 1957-01-25 CH CH346795D patent/CH346795A/de unknown
- 1957-09-30 GB GB30523/57A patent/GB854594A/en not_active Expired
-
1958
- 1958-01-11 DE DEC16089A patent/DE1046372B/de active Pending
- 1958-01-17 FR FR1198450D patent/FR1198450A/fr not_active Expired
- 1958-01-23 US US710732A patent/US2994768A/en not_active Expired - Lifetime
Also Published As
Publication number | Publication date |
---|---|
FR1198450A (fr) | 1959-12-07 |
DE1046372B (de) | 1958-12-11 |
CH346795A (de) | 1960-05-31 |
US2994768A (en) | 1961-08-01 |
GB854594A (en) | 1960-11-23 |