JPS539069B1 - - Google Patents
Info
- Publication number
- JPS539069B1 JPS539069B1 JP591371A JP591371A JPS539069B1 JP S539069 B1 JPS539069 B1 JP S539069B1 JP 591371 A JP591371 A JP 591371A JP 591371 A JP591371 A JP 591371A JP S539069 B1 JPS539069 B1 JP S539069B1
- Authority
- JP
- Japan
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Pending
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)
- Optical Communication System (AREA)
- Lock And Its Accessories (AREA)
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| DE19702005858 DE2005858A1 (en) | 1970-02-10 | 1970-02-10 | Photoelectric barrier |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| JPS539069B1 true JPS539069B1 (en) | 1978-04-03 |
Family
ID=5761807
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP591371A Pending JPS539069B1 (en) | 1970-02-10 | 1971-02-10 |
Country Status (2)
| Country | Link |
|---|---|
| JP (1) | JPS539069B1 (en) |
| DE (1) | DE2005858A1 (en) |
Families Citing this family (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| FR2433796A1 (en) * | 1978-08-17 | 1980-03-14 | Constant Roger | Luminous safety barrier protecting level crossing - has feedback from receiver causing oscillation to prevent inadvertent operation |
| DE3230556A1 (en) * | 1982-08-17 | 1984-03-15 | Wilfried 2725 Hemslingen Krüger | Light barrier property external security device |
Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US3099829A (en) * | 1959-05-25 | 1963-07-30 | Namenyi-Katz Laszlo | Yarn break detector |
| US3283162A (en) * | 1963-01-29 | 1966-11-01 | Api Instr Company | Photosensitive apparatus for detecting a flaw in material with steady illumination means |
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1970
- 1970-02-10 DE DE19702005858 patent/DE2005858A1/en active Pending
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1971
- 1971-02-10 JP JP591371A patent/JPS539069B1/ja active Pending
Patent Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US3099829A (en) * | 1959-05-25 | 1963-07-30 | Namenyi-Katz Laszlo | Yarn break detector |
| US3283162A (en) * | 1963-01-29 | 1966-11-01 | Api Instr Company | Photosensitive apparatus for detecting a flaw in material with steady illumination means |
Also Published As
| Publication number | Publication date |
|---|---|
| DE2005858A1 (en) | 1971-08-26 |