FR728051A - Improvements to devices detecting cracks in electrical conductors - Google Patents

Improvements to devices detecting cracks in electrical conductors

Info

Publication number
FR728051A
FR728051A FR728051DA FR728051A FR 728051 A FR728051 A FR 728051A FR 728051D A FR728051D A FR 728051DA FR 728051 A FR728051 A FR 728051A
Authority
FR
France
Prior art keywords
electrical conductors
detecting cracks
devices detecting
devices
cracks
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
French (fr)
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.)
Sperry Products Inc
Original Assignee
Sperry Products Inc
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 Sperry Products Inc filed Critical Sperry Products Inc
Application granted granted Critical
Publication of FR728051A publication Critical patent/FR728051A/en
Expired legal-status Critical Current

Links

Classifications

    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B61—RAILWAYS
    • B61K—AUXILIARY EQUIPMENT SPECIALLY ADAPTED FOR RAILWAYS, NOT OTHERWISE PROVIDED FOR
    • B61K9/00—Railway vehicle profile gauges; Detecting or indicating overheating of components; Apparatus on locomotives or cars to indicate bad track sections; General design of track recording vehicles
    • B61K9/08—Measuring installations for surveying permanent way
    • B61K9/10—Measuring installations for surveying permanent way for detecting cracks in rails or welds thereof

Landscapes

  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Current-Collector Devices For Electrically Propelled Vehicles (AREA)
  • Investigating Or Analyzing Materials By The Use Of Magnetic Means (AREA)
  • Investigating Or Analyzing Materials By The Use Of Electric Means (AREA)
FR728051D 1930-12-13 1931-12-09 Improvements to devices detecting cracks in electrical conductors Expired FR728051A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
US502161A US1996924A (en) 1930-12-13 1930-12-13 Water supply control means for detector cars

Publications (1)

Publication Number Publication Date
FR728051A true FR728051A (en) 1932-06-29

Family

ID=23996617

Family Applications (1)

Application Number Title Priority Date Filing Date
FR728051D Expired FR728051A (en) 1930-12-13 1931-12-09 Improvements to devices detecting cracks in electrical conductors

Country Status (3)

Country Link
US (1) US1996924A (en)
DE (1) DE597128C (en)
FR (1) FR728051A (en)

Families Citing this family (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2479219A (en) * 1945-09-20 1949-08-16 Sperry Prod Inc Rail flaw detector car mechanism

Also Published As

Publication number Publication date
DE597128C (en) 1934-05-17
US1996924A (en) 1935-04-09

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