FR2565727B1 - ELECTRONIC WARNING DEVICE, ESPECIALLY FOR MOTOR VEHICLES. - Google Patents

ELECTRONIC WARNING DEVICE, ESPECIALLY FOR MOTOR VEHICLES.

Info

Publication number
FR2565727B1
FR2565727B1 FR8507775A FR8507775A FR2565727B1 FR 2565727 B1 FR2565727 B1 FR 2565727B1 FR 8507775 A FR8507775 A FR 8507775A FR 8507775 A FR8507775 A FR 8507775A FR 2565727 B1 FR2565727 B1 FR 2565727B1
Authority
FR
France
Prior art keywords
motor vehicles
warning device
electronic warning
electronic
vehicles
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
FR8507775A
Other languages
French (fr)
Other versions
FR2565727A1 (en
Inventor
Gerhard Bruggen
Dieter Karr
Josef Winkler
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.)
Robert Bosch GmbH
Original Assignee
Robert Bosch GmbH
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 Robert Bosch GmbH filed Critical Robert Bosch GmbH
Publication of FR2565727A1 publication Critical patent/FR2565727A1/en
Application granted granted Critical
Publication of FR2565727B1 publication Critical patent/FR2565727B1/en
Expired legal-status Critical Current

Links

Classifications

    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B06—GENERATING OR TRANSMITTING MECHANICAL VIBRATIONS IN GENERAL
    • B06B—METHODS OR APPARATUS FOR GENERATING OR TRANSMITTING MECHANICAL VIBRATIONS OF INFRASONIC, SONIC, OR ULTRASONIC FREQUENCY, e.g. FOR PERFORMING MECHANICAL WORK IN GENERAL
    • B06B1/00—Methods or apparatus for generating mechanical vibrations of infrasonic, sonic, or ultrasonic frequency
    • B06B1/02—Methods or apparatus for generating mechanical vibrations of infrasonic, sonic, or ultrasonic frequency making use of electrical energy
    • B06B1/0207—Driving circuits
    • B06B1/0223—Driving circuits for generating signals continuous in time
    • B06B1/0269—Driving circuits for generating signals continuous in time for generating multiple frequencies
    • B06B1/0284—Driving circuits for generating signals continuous in time for generating multiple frequencies with consecutive, i.e. sequential generation, e.g. with frequency sweep

Landscapes

  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Emergency Alarm Devices (AREA)
FR8507775A 1984-06-06 1985-05-23 ELECTRONIC WARNING DEVICE, ESPECIALLY FOR MOTOR VEHICLES. Expired FR2565727B1 (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
DE19843420988 DE3420988A1 (en) 1984-06-06 1984-06-06 Electronic warning signal system especially for motor vehicles

Publications (2)

Publication Number Publication Date
FR2565727A1 FR2565727A1 (en) 1985-12-13
FR2565727B1 true FR2565727B1 (en) 1987-12-18

Family

ID=6237709

Family Applications (1)

Application Number Title Priority Date Filing Date
FR8507775A Expired FR2565727B1 (en) 1984-06-06 1985-05-23 ELECTRONIC WARNING DEVICE, ESPECIALLY FOR MOTOR VEHICLES.

Country Status (3)

Country Link
DE (1) DE3420988A1 (en)
FR (1) FR2565727B1 (en)
IT (1) IT1184563B (en)

Families Citing this family (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPH0162143U (en) * 1987-04-30 1989-04-20
IT1228767B (en) * 1989-03-29 1991-07-03 Electronsystem Spa ELECTRONICALLY PILOTED HORN FOR MOTOR VEHICLES.
CN101901596B (en) * 2010-08-18 2012-09-19 王伟东 Touch type horn system with counting function

Family Cites Families (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE2518708B1 (en) * 1975-04-26 1976-02-26 Wandel & Goltermann Mobile electro-acoustic alarm system, so-called electronic police horn
FR2333314A1 (en) * 1975-11-27 1977-06-24 Klaxon Sa Loudspeaker supply circuit for acoustic alarm - provides two signals with given frequency ratio using mixer system
DE2554940C2 (en) * 1975-12-06 1977-12-29 Westfälische Metall Industrie KG, Hueck & Co, 4780 Lippstadt Acoustic signal transmitter for motor vehicles
DE2905534A1 (en) * 1975-12-06 1980-09-04 Westfaelische Metall Industrie Motor vehicle acoustic horn - has electronic generator for variable frequency of acoustic radiation upper harmonic, with modulator and counter
JPS57210395A (en) * 1981-06-19 1982-12-23 Ricoh Kk Piezo-electric buzzer driving system

Also Published As

Publication number Publication date
IT8521015A0 (en) 1985-06-04
IT1184563B (en) 1987-10-28
FR2565727A1 (en) 1985-12-13
DE3420988A1 (en) 1985-12-12

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Legal Events

Date Code Title Description
ST Notification of lapse