GB512836A - Improvements in or relating to electric switches suitable for operation by the passage of road vehicles - Google Patents

Improvements in or relating to electric switches suitable for operation by the passage of road vehicles

Info

Publication number
GB512836A
GB512836A GB828338A GB828338A GB512836A GB 512836 A GB512836 A GB 512836A GB 828338 A GB828338 A GB 828338A GB 828338 A GB828338 A GB 828338A GB 512836 A GB512836 A GB 512836A
Authority
GB
United Kingdom
Prior art keywords
diaphragm
plate
passage
switch
diaphragms
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
GB828338A
Other languages
English (en)
Inventor
Reynell Sidney Smith
John Henry Ellis
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
Priority to NL60713D priority Critical patent/NL60713C/xx
Application filed by Automatic Telephone and Electric Co Ltd filed Critical Automatic Telephone and Electric Co Ltd
Priority to GB828338A priority patent/GB512836A/en
Priority to DEA2445D priority patent/DE920893C/de
Priority to FR851726D priority patent/FR851726A/fr
Publication of GB512836A publication Critical patent/GB512836A/en
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)
  • 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)
GB828338A 1938-03-17 1938-03-17 Improvements in or relating to electric switches suitable for operation by the passage of road vehicles Expired GB512836A (en)

Priority Applications (4)

Application Number Priority Date Filing Date Title
NL60713D NL60713C (enrdf_load_stackoverflow) 1938-03-17
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
DEA2445D DE920893C (de) 1938-03-17 1939-03-04 Fahrzeuggesteuerte Strassenverkehrsschalteinrichtung
FR851726D FR851726A (fr) 1938-03-17 1939-03-16 Perfectionnement aux détecteurs pneumatiques de véhicules

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
GB512836A true GB512836A (en) 1939-09-27

Family

ID=9849535

Family Applications (1)

Application Number Title Priority Date Filing Date
GB828338A Expired GB512836A (en) 1938-03-17 1938-03-17 Improvements in or relating to electric switches suitable for operation by the passage of road vehicles

Country Status (4)

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

Families Citing this family (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN112176895B (zh) * 2020-10-19 2021-11-23 江苏盛达福交通工程有限公司 道路交通标线投影装置

Also Published As

Publication number Publication date
DE920893C (de) 1954-12-02
NL60713C (enrdf_load_stackoverflow)
FR851726A (fr) 1940-01-13

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