FR1047370A - Perfectionnements apportés aux dispositifs de signalisation de doublement - Google Patents

Perfectionnements apportés aux dispositifs de signalisation de doublement

Info

Publication number
FR1047370A
FR1047370A FR1047370DA FR1047370A FR 1047370 A FR1047370 A FR 1047370A FR 1047370D A FR1047370D A FR 1047370DA FR 1047370 A FR1047370 A FR 1047370A
Authority
FR
France
Prior art keywords
doubling
signaling devices
signaling
devices
doubling signaling
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)
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.)
PYCHLAU KG DR
Original Assignee
PYCHLAU KG DR
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 PYCHLAU KG DR filed Critical PYCHLAU KG DR
Application granted granted Critical
Publication of FR1047370A publication Critical patent/FR1047370A/fr
Expired legal-status Critical Current

Links

Classifications

    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04R—LOUDSPEAKERS, MICROPHONES, GRAMOPHONE PICK-UPS OR LIKE ACOUSTIC ELECTROMECHANICAL TRANSDUCERS; DEAF-AID SETS; PUBLIC ADDRESS SYSTEMS
    • H04R17/00—Piezoelectric transducers; Electrostrictive transducers
    • H04R17/10—Resonant transducers, i.e. adapted to produce maximum output at a predetermined frequency
    • G—PHYSICS
    • G08—SIGNALLING
    • G08B—SIGNALLING OR CALLING SYSTEMS; ORDER TELEGRAPHS; ALARM SYSTEMS
    • G08B3/00—Audible signalling systems; Audible personal calling systems
    • G08B3/10—Audible signalling systems; Audible personal calling systems using electric transmission; using electromagnetic transmission
    • G—PHYSICS
    • G08—SIGNALLING
    • G08B—SIGNALLING OR CALLING SYSTEMS; ORDER TELEGRAPHS; ALARM SYSTEMS
    • G08B7/00—Signalling systems according to more than one of groups G08B3/00 - G08B6/00; Personal calling systems according to more than one of groups G08B3/00 - G08B6/00
    • G08B7/06—Signalling systems according to more than one of groups G08B3/00 - G08B6/00; Personal calling systems according to more than one of groups G08B3/00 - G08B6/00 using electric transmission, e.g. involving audible and visible signalling through the use of sound and light sources
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04R—LOUDSPEAKERS, MICROPHONES, GRAMOPHONE PICK-UPS OR LIKE ACOUSTIC ELECTROMECHANICAL TRANSDUCERS; DEAF-AID SETS; PUBLIC ADDRESS SYSTEMS
    • H04R1/00—Details of transducers, loudspeakers or microphones
    • H04R1/08—Mouthpieces; Microphones; Attachments therefor
    • H04R1/083—Special constructions of mouthpieces
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04R—LOUDSPEAKERS, MICROPHONES, GRAMOPHONE PICK-UPS OR LIKE ACOUSTIC ELECTROMECHANICAL TRANSDUCERS; DEAF-AID SETS; PUBLIC ADDRESS SYSTEMS
    • H04R1/00—Details of transducers, loudspeakers or microphones
    • H04R1/08—Mouthpieces; Microphones; Attachments therefor
    • H04R1/083—Special constructions of mouthpieces
    • H04R1/086—Protective screens, e.g. all weather or wind screens

Landscapes

  • Physics & Mathematics (AREA)
  • Engineering & Computer Science (AREA)
  • Acoustics & Sound (AREA)
  • Signal Processing (AREA)
  • General Physics & Mathematics (AREA)
  • Electromagnetism (AREA)
  • Piezo-Electric Transducers For Audible Bands (AREA)
  • Exhaust Silencers (AREA)
FR1047370D 1951-07-24 1951-12-28 Perfectionnements apportés aux dispositifs de signalisation de doublement Expired FR1047370A (fr)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
DEP5919A DE923354C (de) 1951-07-24 1951-07-24 UEberholungssignalanlage

Publications (1)

Publication Number Publication Date
FR1047370A true FR1047370A (fr) 1953-12-14

Family

ID=6626604

Family Applications (2)

Application Number Title Priority Date Filing Date
FR1047370D Expired FR1047370A (fr) 1951-07-24 1951-12-28 Perfectionnements apportés aux dispositifs de signalisation de doublement
FR64910D Expired FR64910E (fr) 1951-07-24 1952-07-08 Perfectionnements apportés aux dispositifs de signalisation de doublement

Family Applications After (1)

Application Number Title Priority Date Filing Date
FR64910D Expired FR64910E (fr) 1951-07-24 1952-07-08 Perfectionnements apportés aux dispositifs de signalisation de doublement

Country Status (4)

Country Link
DE (1) DE923354C (da)
FR (2) FR1047370A (da)
GB (2) GB705450A (da)
IT (1) IT500018A (da)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2931020A (en) * 1955-07-11 1960-03-29 Thomas J Bender Secondary alarm system

Families Citing this family (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE1112927B (de) * 1956-05-08 1961-08-17 Tele F Lux Soc A R L Verfahren zur elektrischen UEbertragung von akustischen UEberholsignalen von Fahrzeugen
US3670689A (en) * 1970-03-20 1972-06-20 Falcon Safety Prod Tilt-operated hand held gas powered acoustic device
DE10003689C1 (de) * 2000-01-28 2001-05-23 Hella Kg Hueck & Co Schaltungsanordnung zur Leistungsanpassung einer Verstärkeranlage zur Erzielung eines annähernd konstanten Schalldruckpegels des Sondersignals für vorfahrtberechtigte Wegebenutzer
DE102017220474A1 (de) * 2017-11-16 2019-05-16 Robert Bosch Gmbh Vorrichtung zur luftschallakustischen Sensierung der Umgebung eines Fahrzeugs, Fahrzeug
EP3907502A1 (en) 2020-05-08 2021-11-10 ABB Schweiz AG Sensing arrangement

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2931020A (en) * 1955-07-11 1960-03-29 Thomas J Bender Secondary alarm system

Also Published As

Publication number Publication date
GB717090A (en) 1954-10-20
GB705450A (en) 1954-03-10
IT500018A (da)
FR64910E (fr) 1955-12-14
DE923354C (de) 1955-02-10

Similar Documents

Publication Publication Date Title
FR1063305A (fr) Perfectionnements aux dispositifs interrupteurs
FR1071108A (fr) Perfectionnements apportés aux dispositifs de combustion
FR1047370A (fr) Perfectionnements apportés aux dispositifs de signalisation de doublement
FR1041709A (fr) Perfectionnements aux dispositifs limiteurs de pression
FR1068313A (fr) Perfectionnements aux dispositifs lumineux de signalisation pour cycles et analogues
FR1026828A (fr) Perfectionnements aux dispositifs de signalisation
FR1035382A (fr) Perfectionnements apportés aux dispositifs de débrayage
FR1041357A (fr) Perfectionnements aux dispositifs de signalisation des fiches suspendues
FR1118401A (fr) Perfectionnements apportés aux dispositifs anti-vols
FR1086352A (fr) Perfectionnements aux dispositifs de signalisation clignotants
FR64717E (fr) Perfectionnements aux dispositifs de signalisation clignotants
FR1032403A (fr) Perfectionnements aux dispositifs de signalisation électrique
FR1036106A (fr) Perfectionnements aux dispositifs décavaillonneurs
FR994527A (fr) Perfectionnements aux dispositifs de signalisation
FR924738A (fr) Perfectionnements aux dispositifs de signalisation
FR995694A (fr) Perfectionnements aux dispositifs de télécinéma
FR1037978A (fr) Perfectionnements aux dispositifs hydrauliques
FR1063540A (fr) Perfectionnements apportés aux dispositifs de précipitation électrostatiques
FR1046298A (fr) Perfectionnements aux dispositifs clignoteurs
FR1085295A (fr) Perfectionnements aux dispositifs électriques de signalisation
FR1046332A (fr) Perfectionnements aux dispositifs de jonction élastique
FR1058539A (fr) Perfectionnements aux dispositifs de duplexage
FR996610A (fr) Perfectionnements relatifs aux dispositifs de signalisation des chemins de fer
FR997289A (fr) Perfectionnements relatifs aux dispositifs de signalisation des chemins de fer
FR1052859A (fr) Perfectionnements aux dispositifs de pompage