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FR851726A - Perfectionnement aux détecteurs pneumatiques de véhicules - Google Patents

Perfectionnement aux détecteurs pneumatiques de véhicules

Info

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
Application number
Other languages
English (en)
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Automatic Telephone and Electric Co Ltd
Original Assignee
Automatic Telephone and Electric Co Ltd
Priority date (The priority date 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 date listed.)
Filing date
Publication date
Application filed by Automatic Telephone and Electric Co Ltd filed Critical Automatic Telephone and Electric Co Ltd
Application granted granted Critical
Publication of FR851726A publication Critical patent/FR851726A/fr
Expired legal-status Critical Current

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)
  • Refuge Islands, Traffic Blockers, Or Guard Fence (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)
FR851726D 1938-03-17 1939-03-16 Perfectionnement aux détecteurs pneumatiques de véhicules Expired FR851726A (fr)

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 (fr) 1940-01-13

Family

ID=9849535

Family Applications (1)

Application Number Title Priority Date Filing Date
FR851726D Expired FR851726A (fr) 1938-03-17 1939-03-16 Perfectionnement aux détecteurs pneumatiques de véhicules

Country Status (4)

Country Link
DE (1) DE920893C (fr)
FR (1) FR851726A (fr)
GB (1) GB512836A (fr)
NL (1) NL60713C (fr)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN112176895A (zh) * 2020-10-19 2021-01-05 张静 道路交通标线投影装置

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN112176895A (zh) * 2020-10-19 2021-01-05 张静 道路交通标线投影装置

Also Published As

Publication number Publication date
DE920893C (de) 1954-12-02
GB512836A (en) 1939-09-27
NL60713C (fr)

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