BE870113A - ELECTRET DEVICE AND LUMINOUS DISPLAY SYSTEM INCLUDING SUCH A DEVICE - Google Patents
ELECTRET DEVICE AND LUMINOUS DISPLAY SYSTEM INCLUDING SUCH A DEVICEInfo
- Publication number
- BE870113A BE870113A BE190181A BE190181A BE870113A BE 870113 A BE870113 A BE 870113A BE 190181 A BE190181 A BE 190181A BE 190181 A BE190181 A BE 190181A BE 870113 A BE870113 A BE 870113A
- Authority
- BE
- Belgium
- Prior art keywords
- system including
- display system
- luminous display
- electret
- electret device
- Prior art date
Links
Classifications
-
- G—PHYSICS
- G08—SIGNALLING
- G08G—TRAFFIC CONTROL SYSTEMS
- G08G1/00—Traffic control systems for road vehicles
- G08G1/09—Arrangements for giving variable traffic instructions
- G08G1/095—Traffic lights
-
- G—PHYSICS
- G09—EDUCATION; CRYPTOGRAPHY; DISPLAY; ADVERTISING; SEALS
- G09F—DISPLAYING; ADVERTISING; SIGNS; LABELS OR NAME-PLATES; SEALS
- G09F13/00—Illuminated signs; Luminous advertising
- G09F13/04—Signs, boards or panels, illuminated from behind the insignia
- G09F13/0418—Constructional details
- G09F13/0472—Traffic signs
-
- G—PHYSICS
- G09—EDUCATION; CRYPTOGRAPHY; DISPLAY; ADVERTISING; SEALS
- G09F—DISPLAYING; ADVERTISING; SIGNS; LABELS OR NAME-PLATES; SEALS
- G09F9/00—Indicating arrangements for variable information in which the information is built-up on a support by selection or combination of individual elements
- G09F9/30—Indicating arrangements for variable information in which the information is built-up on a support by selection or combination of individual elements in which the desired character or characters are formed by combining individual elements
- G09F9/37—Indicating arrangements for variable information in which the information is built-up on a support by selection or combination of individual elements in which the desired character or characters are formed by combining individual elements being movable elements
- G09F9/372—Indicating arrangements for variable information in which the information is built-up on a support by selection or combination of individual elements in which the desired character or characters are formed by combining individual elements being movable elements the positions of the elements being controlled by the application of an electric field
Landscapes
- Physics & Mathematics (AREA)
- General Physics & Mathematics (AREA)
- Engineering & Computer Science (AREA)
- Theoretical Computer Science (AREA)
- Illuminated Signs And Luminous Advertising (AREA)
- Devices For Indicating Variable Information By Combining Individual Elements (AREA)
- Electrochromic Elements, Electrophoresis, Or Variable Reflection Or Absorption Elements (AREA)
- Road Signs Or Road Markings (AREA)
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
FR7726693A FR2402220A1 (en) | 1977-09-02 | 1977-09-02 | ELECTRET DEVICE AND LUMINOUS DISPLAY SYSTEM INCLUDING SUCH A DEVICE |
Publications (1)
Publication Number | Publication Date |
---|---|
BE870113A true BE870113A (en) | 1978-12-18 |
Family
ID=9194993
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
BE190181A BE870113A (en) | 1977-09-02 | 1978-08-31 | ELECTRET DEVICE AND LUMINOUS DISPLAY SYSTEM INCLUDING SUCH A DEVICE |
Country Status (7)
Country | Link |
---|---|
JP (1) | JPS5449100A (en) |
BE (1) | BE870113A (en) |
DE (1) | DE2838277C3 (en) |
FR (1) | FR2402220A1 (en) |
GB (1) | GB2006944B (en) |
LU (1) | LU80175A1 (en) |
NL (1) | NL7808984A (en) |
Families Citing this family (5)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPS61503057A (en) * | 1984-08-21 | 1986-12-25 | シンプソン,ジヨ−ジ ア−ル. | Electrostatically actuated binary device array |
US4794370A (en) * | 1984-08-21 | 1988-12-27 | Bos-Knox Ltd. | Peristaltic electrostatic binary device |
US4736202A (en) * | 1984-08-21 | 1988-04-05 | Bos-Knox, Ltd. | Electrostatic binary switching and memory devices |
IT1303597B1 (en) * | 1998-12-09 | 2000-11-14 | Fiat Ricerche | OPTICAL DEVICE AND VARIABLE OPERATING STATE, IN PARTICULAR SHUTTER OR MIRROR, WITH ELECTROSTATIC CONTROL. |
US6427910B1 (en) * | 1999-12-17 | 2002-08-06 | International Business Machines Corporation | Method for managing and updating overloaded cards |
Family Cites Families (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US3897997A (en) * | 1974-02-01 | 1975-08-05 | Charles G Kalt | Electrostatic display device with variable reflectivity |
-
1977
- 1977-09-02 FR FR7726693A patent/FR2402220A1/en active Granted
-
1978
- 1978-08-30 LU LU80175A patent/LU80175A1/en unknown
- 1978-08-31 BE BE190181A patent/BE870113A/en not_active IP Right Cessation
- 1978-09-01 DE DE2838277A patent/DE2838277C3/en not_active Expired
- 1978-09-01 NL NL7808984A patent/NL7808984A/en not_active Application Discontinuation
- 1978-09-01 JP JP10802778A patent/JPS5449100A/en active Pending
- 1978-09-04 GB GB7835499A patent/GB2006944B/en not_active Expired
Also Published As
Publication number | Publication date |
---|---|
FR2402220A1 (en) | 1979-03-30 |
DE2838277A1 (en) | 1979-03-08 |
JPS5449100A (en) | 1979-04-18 |
LU80175A1 (en) | 1979-02-12 |
DE2838277C3 (en) | 1981-10-01 |
GB2006944A (en) | 1979-05-10 |
GB2006944B (en) | 1982-01-13 |
DE2838277B2 (en) | 1981-01-22 |
NL7808984A (en) | 1979-03-06 |
FR2402220B1 (en) | 1982-01-08 |
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Legal Events
Date | Code | Title | Description |
---|---|---|---|
RE | Patent lapsed |
Owner name: THOMSON-CSF Effective date: 19860831 |