DK111731B - Beskyttelsesanlæg. - Google Patents
Beskyttelsesanlæg.Info
- Publication number
- DK111731B DK111731B DK236564AA DK236564A DK111731B DK 111731 B DK111731 B DK 111731B DK 236564A A DK236564A A DK 236564AA DK 236564 A DK236564 A DK 236564A DK 111731 B DK111731 B DK 111731B
- Authority
- DK
- Denmark
- Prior art keywords
- protection systems
- systems
- protection
- Prior art date
Links
Classifications
-
- G—PHYSICS
- G08—SIGNALLING
- G08B—SIGNALLING OR CALLING SYSTEMS; ORDER TELEGRAPHS; ALARM SYSTEMS
- G08B13/00—Burglar, theft or intruder alarms
- G08B13/18—Actuation by interference with heat, light, or radiation of shorter wavelength; Actuation by intruding sources of heat, light, or radiation of shorter wavelength
- G08B13/181—Actuation by interference with heat, light, or radiation of shorter wavelength; Actuation by intruding sources of heat, light, or radiation of shorter wavelength using active radiation detection systems
- G08B13/183—Actuation by interference with heat, light, or radiation of shorter wavelength; Actuation by intruding sources of heat, light, or radiation of shorter wavelength using active radiation detection systems by interruption of a radiation beam or barrier
Landscapes
- Physics & Mathematics (AREA)
- General Physics & Mathematics (AREA)
- Burglar Alarm Systems (AREA)
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
US292808A US3183499A (en) | 1963-07-03 | 1963-07-03 | High directivity solid curtain perimeter intrusion system |
Publications (1)
Publication Number | Publication Date |
---|---|
DK111731B true DK111731B (da) | 1968-09-30 |
Family
ID=23126284
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
DK236564AA DK111731B (da) | 1963-07-03 | 1964-05-12 | Beskyttelsesanlæg. |
Country Status (5)
Country | Link |
---|---|
US (1) | US3183499A (da) |
BE (1) | BE648719A (da) |
DK (1) | DK111731B (da) |
GB (1) | GB994558A (da) |
SE (1) | SE313754B (da) |
Families Citing this family (12)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US3764813A (en) * | 1972-04-12 | 1973-10-09 | Bell Telephone Labor Inc | Coordinate detection system |
US3825916A (en) * | 1972-10-20 | 1974-07-23 | California Crime Technological | Laser fence |
US3882445A (en) * | 1973-09-24 | 1975-05-06 | Crown Zellerbach Corp | Compression-wave alarm system |
US4015122A (en) * | 1974-07-12 | 1977-03-29 | Rubinstein Walter M | Photo-electric object detection system |
SE428250B (sv) * | 1979-05-31 | 1983-06-13 | Bert Jonsson | Fotoelektrisk anordning for avkenning av foremal |
WO1982002787A1 (en) * | 1981-02-10 | 1982-08-19 | Gray John E | Photoelectric obstruction detector for elevator doorways |
EP0118698A3 (de) * | 1983-02-08 | 1985-03-13 | Horst Klostermann | Schutzgitter |
US4672195A (en) * | 1984-11-08 | 1987-06-09 | Spacelabs, Inc. | Radiant beam coordinate detector system |
US4652741A (en) * | 1984-11-08 | 1987-03-24 | Spacelabs Inc. | Radiant beam coordinate detector |
CN103186962A (zh) * | 2011-12-29 | 2013-07-03 | 鸿富锦精密工业(深圳)有限公司 | 可保护防盗报警器的装置和保护防盗报警器的方法 |
US10619397B2 (en) * | 2015-09-14 | 2020-04-14 | Rytec Corporation | System and method for safety management in roll-up doors |
EP3899186A4 (en) | 2018-12-21 | 2022-10-05 | Rytec Corporation | Safety system and method for overhead roll-up doors |
Family Cites Families (15)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US1530419A (en) * | 1925-03-17 | Electric alarm apparatus | ||
US2242317A (en) * | 1941-05-20 | metcalf | ||
US923170A (en) * | 1908-11-02 | 1909-06-01 | Gen Electric | Signal system. |
US1848220A (en) * | 1927-08-26 | 1932-03-08 | American Telephone & Telegraph | Energy control arrangement |
US2037191A (en) * | 1932-09-30 | 1936-04-14 | Western Electric Co | Registering device |
US1992199A (en) * | 1932-11-07 | 1935-02-26 | Illuminating Engineering Co | Light source |
GB437205A (en) * | 1934-04-24 | 1935-10-24 | Gen Electric Co Ltd | Improvements in or relating to burglar alarms |
US2315978A (en) * | 1935-11-15 | 1943-04-06 | Automatic Electrical Devices I | Photographic timing device |
US2360885A (en) * | 1939-05-02 | 1944-10-24 | Photoswitch Inc | Photoelectric supervision of filling stations |
US2302271A (en) * | 1940-04-27 | 1942-11-17 | Hammond V Hayes | Alarm system |
US2438825A (en) * | 1945-06-16 | 1948-03-30 | Trans Lux Corp | Selector |
GB717399A (en) * | 1952-10-09 | 1954-10-27 | Gen Electric Co Ltd | Improvements in or relating to photo-electric machine guards |
US2900521A (en) * | 1953-07-21 | 1959-08-18 | Westinghouse Electric Corp | Door control apparatus |
US2816283A (en) * | 1956-03-30 | 1957-12-10 | Rca Corp | Semiconductor null detector |
US3077540A (en) * | 1960-03-29 | 1963-02-12 | Edwin K Yager | Means for sensing change in state of input electrical energy |
-
1963
- 1963-07-03 US US292808A patent/US3183499A/en not_active Expired - Lifetime
- 1963-12-11 GB GB49032/63A patent/GB994558A/en not_active Expired
-
1964
- 1964-03-07 SE SE2896/64A patent/SE313754B/xx unknown
- 1964-05-12 DK DK236564AA patent/DK111731B/da unknown
- 1964-06-02 BE BE648719D patent/BE648719A/xx unknown
Also Published As
Publication number | Publication date |
---|---|
GB994558A (en) | 1965-06-10 |
SE313754B (da) | 1969-08-18 |
BE648719A (da) | 1964-10-01 |
US3183499A (en) | 1965-05-11 |
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