FR973924A - Appareil de détection du passage des objets - Google Patents

Appareil de détection du passage des objets

Info

Publication number
FR973924A
FR973924A FR973924DA FR973924A FR 973924 A FR973924 A FR 973924A FR 973924D A FR973924D A FR 973924DA FR 973924 A FR973924 A FR 973924A
Authority
FR
France
Prior art keywords
passage
objects
detecting
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.)
Siemens and General Electric Railway Signal Co Ltd
Original Assignee
Siemens and General Electric Railway Signal 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 Siemens and General Electric Railway Signal Co Ltd filed Critical Siemens and General Electric Railway Signal Co Ltd
Application granted granted Critical
Publication of FR973924A publication Critical patent/FR973924A/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

Landscapes

  • Physics & Mathematics (AREA)
  • General Physics & Mathematics (AREA)
  • Geophysics And Detection Of Objects (AREA)
  • A Measuring Device Byusing Mechanical Method (AREA)
  • Indicating Or Recording The Presence, Absence, Or Direction Of Movement (AREA)
FR973924D 1947-10-29 1948-10-22 Appareil de détection du passage des objets Expired FR973924A (fr)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
GB28895/47A GB647268A (en) 1947-10-29 1947-10-29 Improvements in or relating to apparatus for use in detecting the passage of wheeledvehicles

Publications (1)

Publication Number Publication Date
FR973924A true FR973924A (fr) 1951-02-16

Family

ID=10282918

Family Applications (1)

Application Number Title Priority Date Filing Date
FR973924D Expired FR973924A (fr) 1947-10-29 1948-10-22 Appareil de détection du passage des objets

Country Status (3)

Country Link
US (1) US2550970A (fr)
FR (1) FR973924A (fr)
GB (1) GB647268A (fr)

Families Citing this family (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2976888A (en) * 1957-05-24 1961-03-28 Henry H Merriman Coupling for tube expander
US3090401A (en) * 1958-11-12 1963-05-21 Calpat Products Inc Street hose for pneumatically actuated parking meter
US9349288B2 (en) 2014-07-28 2016-05-24 Econolite Group, Inc. Self-configuring traffic signal controller

Family Cites Families (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2074443A (en) * 1930-12-09 1937-03-23 Benjamin M Walpole Self-actuated traffic signal system
US2037583A (en) * 1932-11-16 1936-04-14 Kidde & Co Walter Actuating mechanism for aeroplane flotation devices

Also Published As

Publication number Publication date
GB647268A (en) 1950-12-06
US2550970A (en) 1951-05-01

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