FR851726A - Further training in pneumatic vehicle detectors - Google Patents
Further training in pneumatic vehicle detectorsInfo
- Publication number
- FR851726A FR851726A FR851726DA FR851726A FR 851726 A FR851726 A FR 851726A FR 851726D A FR851726D A FR 851726DA FR 851726 A FR851726 A FR 851726A
- Authority
- FR
- France
- Prior art keywords
- pneumatic vehicle
- further training
- vehicle detectors
- detectors
- training
- Prior art date
- 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.)
- Expired
Links
Classifications
-
- G—PHYSICS
- G08—SIGNALLING
- G08G—TRAFFIC CONTROL SYSTEMS
- G08G1/00—Traffic control systems for road vehicles
- G08G1/01—Detecting movement of traffic to be counted or controlled
- G08G1/02—Detecting movement of traffic to be counted or controlled using treadles built into the road
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01H—ELECTRIC SWITCHES; RELAYS; SELECTORS; EMERGENCY PROTECTIVE DEVICES
- H01H3/00—Mechanisms for operating contacts
- H01H3/22—Power arrangements internal to the switch for operating the driving mechanism
- H01H3/24—Power arrangements internal to the switch for operating the driving mechanism using pneumatic or hydraulic actuator
Landscapes
- Physics & Mathematics (AREA)
- General Physics & Mathematics (AREA)
- Fittings On The Vehicle Exterior For Carrying Loads, And Devices For Holding Or Mounting Articles (AREA)
- Switches Operated By Changes In Physical Conditions (AREA)
- Refuge Islands, Traffic Blockers, Or Guard Fence (AREA)
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
GB828338A GB512836A (en) | 1938-03-17 | 1938-03-17 | Improvements in or relating to electric switches suitable for operation by the passage of road vehicles |
Publications (1)
Publication Number | Publication Date |
---|---|
FR851726A true FR851726A (en) | 1940-01-13 |
Family
ID=9849535
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
FR851726D Expired FR851726A (en) | 1938-03-17 | 1939-03-16 | Further training in pneumatic vehicle detectors |
Country Status (4)
Country | Link |
---|---|
DE (1) | DE920893C (en) |
FR (1) | FR851726A (en) |
GB (1) | GB512836A (en) |
NL (1) | NL60713C (en) |
Cited By (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
CN112176895A (en) * | 2020-10-19 | 2021-01-05 | 张静 | Road traffic marking projection arrangement |
-
0
- NL NL60713D patent/NL60713C/xx active
-
1938
- 1938-03-17 GB GB828338A patent/GB512836A/en not_active Expired
-
1939
- 1939-03-04 DE DEA2445D patent/DE920893C/en not_active Expired
- 1939-03-16 FR FR851726D patent/FR851726A/en not_active Expired
Cited By (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
CN112176895A (en) * | 2020-10-19 | 2021-01-05 | 张静 | Road traffic marking projection arrangement |
Also Published As
Publication number | Publication date |
---|---|
GB512836A (en) | 1939-09-27 |
DE920893C (en) | 1954-12-02 |
NL60713C (en) |
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