FR802209A - New device to detect, reveal, announce or signal the approach of a vehicle on rails - Google Patents

New device to detect, reveal, announce or signal the approach of a vehicle on rails

Info

Publication number
FR802209A
FR802209A FR802209DA FR802209A FR 802209 A FR802209 A FR 802209A FR 802209D A FR802209D A FR 802209DA FR 802209 A FR802209 A FR 802209A
Authority
FR
France
Prior art keywords
announce
reveal
rails
approach
detect
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)
Inventor
Andre Pupier
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 filed Critical
Application granted granted Critical
Publication of FR802209A publication Critical patent/FR802209A/en
Expired legal-status Critical Current

Links

Classifications

    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B61—RAILWAYS
    • B61L—GUIDING RAILWAY TRAFFIC; ENSURING THE SAFETY OF RAILWAY TRAFFIC
    • B61L1/00—Devices along the route controlled by interaction with the vehicle or vehicle train, e.g. pedals
    • B61L1/02—Electric devices associated with track, e.g. rail contacts
    • B61L1/06—Electric devices associated with track, e.g. rail contacts actuated by deformation of rail; actuated by vibration in rail
FR802209D 1934-12-29 1934-12-29 New device to detect, reveal, announce or signal the approach of a vehicle on rails Expired FR802209A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
FR802209T 1934-12-29

Publications (1)

Publication Number Publication Date
FR802209A true FR802209A (en) 1936-08-31

Family

ID=9246935

Family Applications (1)

Application Number Title Priority Date Filing Date
FR802209D Expired FR802209A (en) 1934-12-29 1934-12-29 New device to detect, reveal, announce or signal the approach of a vehicle on rails

Country Status (1)

Country Link
FR (1) FR802209A (en)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US5265831A (en) * 1990-01-12 1993-11-30 Bruno Muller Arrangement for detecting an object by means of sound conducted through a solid body and method of using such arrangement

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US5265831A (en) * 1990-01-12 1993-11-30 Bruno Muller Arrangement for detecting an object by means of sound conducted through a solid body and method of using such arrangement

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