GB173537A - Improvements in or relating to sound-receiving devices for use on motor vehicles - Google Patents

Improvements in or relating to sound-receiving devices for use on motor vehicles

Info

Publication number
GB173537A
GB173537A GB1768120A GB1768120A GB173537A GB 173537 A GB173537 A GB 173537A GB 1768120 A GB1768120 A GB 1768120A GB 1768120 A GB1768120 A GB 1768120A GB 173537 A GB173537 A GB 173537A
Authority
GB
United Kingdom
Prior art keywords
sound
relating
motor vehicles
receiving devices
vehicle
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
GB1768120A
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.)
RUBY CYCLE Co Ltd
Original Assignee
RUBY CYCLE 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 RUBY CYCLE Co Ltd filed Critical RUBY CYCLE Co Ltd
Priority to GB1768120A priority Critical patent/GB173537A/en
Publication of GB173537A publication Critical patent/GB173537A/en
Expired legal-status Critical Current

Links

Classifications

    • 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

Landscapes

  • Physics & Mathematics (AREA)
  • Electromagnetism (AREA)
  • General Physics & Mathematics (AREA)
  • Fittings On The Vehicle Exterior For Carrying Loads, And Devices For Holding Or Mounting Articles (AREA)

Abstract

173,537. Rigby, G. E., and Ruby Cycle Co., Ltd. June 29, 1920. Drawings to Specification. Road signals.-To enable the driver of a road vehicle to hear the approach of an overtaking vehicle, a telephone transmitter provided with a sound-collecting trumpet is mounted at the back or elsewhere on the vehicle and a receiver is mounted inside the driver's shelter and connected to the transmitter through an intensifier. These instruments may be of the ordinary or of the loud-speaking type.
GB1768120A 1920-06-29 1920-06-29 Improvements in or relating to sound-receiving devices for use on motor vehicles Expired GB173537A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
GB1768120A GB173537A (en) 1920-06-29 1920-06-29 Improvements in or relating to sound-receiving devices for use on motor vehicles

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
GB1768120A GB173537A (en) 1920-06-29 1920-06-29 Improvements in or relating to sound-receiving devices for use on motor vehicles

Publications (1)

Publication Number Publication Date
GB173537A true GB173537A (en) 1921-12-29

Family

ID=10099341

Family Applications (1)

Application Number Title Priority Date Filing Date
GB1768120A Expired GB173537A (en) 1920-06-29 1920-06-29 Improvements in or relating to sound-receiving devices for use on motor vehicles

Country Status (1)

Country Link
GB (1) GB173537A (en)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4442512A (en) * 1980-07-01 1984-04-10 Nippon Soken, Inc. Ultrasonic wave transmitting and receiving device for vehicles

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4442512A (en) * 1980-07-01 1984-04-10 Nippon Soken, Inc. Ultrasonic wave transmitting and receiving device for vehicles

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