GB1159964A - Improvements relating to Audible Alarm Systems - Google Patents

Improvements relating to Audible Alarm Systems

Info

Publication number
GB1159964A
GB1159964A GB3502765A GB3502765A GB1159964A GB 1159964 A GB1159964 A GB 1159964A GB 3502765 A GB3502765 A GB 3502765A GB 3502765 A GB3502765 A GB 3502765A GB 1159964 A GB1159964 A GB 1159964A
Authority
GB
United Kingdom
Prior art keywords
audible alarm
improvements relating
alarm systems
klaxon
transducer
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
GB3502765A
Inventor
Bernard Gregson
Donald Hyde
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.)
F C ROBINSON AND PARTNERS Ltd
Original Assignee
F C ROBINSON AND PARTNERS 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 F C ROBINSON AND PARTNERS Ltd filed Critical F C ROBINSON AND PARTNERS Ltd
Priority to GB3502765A priority Critical patent/GB1159964A/en
Publication of GB1159964A publication Critical patent/GB1159964A/en
Expired legal-status Critical Current

Links

Classifications

    • G—PHYSICS
    • G08—SIGNALLING
    • G08B—SIGNALLING OR CALLING SYSTEMS; ORDER TELEGRAPHS; ALARM SYSTEMS
    • G08B1/00—Systems for signalling characterised solely by the form of transmission of the signal
    • G08B1/08—Systems for signalling characterised solely by the form of transmission of the signal using electric transmission ; transformation of alarm signals to electrical signals from a different medium, e.g. transmission of an electric alarm signal upon detection of an audible alarm signal
    • G—PHYSICS
    • G08—SIGNALLING
    • G08B—SIGNALLING OR CALLING SYSTEMS; ORDER TELEGRAPHS; ALARM SYSTEMS
    • G08B1/00—Systems for signalling characterised solely by the form of transmission of the signal

Landscapes

  • Physics & Mathematics (AREA)
  • General Physics & Mathematics (AREA)
  • Audible And Visible Signals (AREA)
  • Emergency Alarm Devices (AREA)

Abstract

1,159,964. Acoustic signalling. F. C. ROBINSON & PARTNERS Ltd. 16 Nov., 1966 [16 Aug., 1965], No. 35027/65. Heading G4F. A sound responsive circuit, which may be used to signal to a control station that a klaxon is being sounded (e.g. in a mine) comprises a transducer 11 connected via a diode bridge 12 to a moving coil relay 13 shunted by a capacitor 14. When the klaxon sounds, transducer 11 generates sufficient voltage to operate relay 13 thus closing contacts 16 of a line circuit and causing a supervisory lamp at the control station to be illuminated.
GB3502765A 1965-08-16 1965-08-16 Improvements relating to Audible Alarm Systems Expired GB1159964A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
GB3502765A GB1159964A (en) 1965-08-16 1965-08-16 Improvements relating to Audible Alarm Systems

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
GB3502765A GB1159964A (en) 1965-08-16 1965-08-16 Improvements relating to Audible Alarm Systems

Publications (1)

Publication Number Publication Date
GB1159964A true GB1159964A (en) 1969-07-30

Family

ID=10372932

Family Applications (1)

Application Number Title Priority Date Filing Date
GB3502765A Expired GB1159964A (en) 1965-08-16 1965-08-16 Improvements relating to Audible Alarm Systems

Country Status (1)

Country Link
GB (1) GB1159964A (en)

Cited By (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4258291A (en) * 1978-11-01 1981-03-24 Robert J. Scott Smoke alarm activated portable lamp
GB2161302A (en) * 1984-07-04 1986-01-08 Christopher Paul Northcott Sound activated light switch
US4630248A (en) * 1983-10-19 1986-12-16 Scott Robert J Sound activated lamp arrangement
GB2189915A (en) * 1986-04-30 1987-11-04 Ozen Corp Driving an actuator with a sound signal
GB2410845A (en) * 2004-02-07 2005-08-10 Joe O'mahoney A locker for recharging mobile phones

Cited By (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4258291A (en) * 1978-11-01 1981-03-24 Robert J. Scott Smoke alarm activated portable lamp
US4630248A (en) * 1983-10-19 1986-12-16 Scott Robert J Sound activated lamp arrangement
GB2161302A (en) * 1984-07-04 1986-01-08 Christopher Paul Northcott Sound activated light switch
GB2189915A (en) * 1986-04-30 1987-11-04 Ozen Corp Driving an actuator with a sound signal
GB2189915B (en) * 1986-04-30 1989-12-06 Ozen Corp An arrangement for driving an actuator in accordance with a sound signal
GB2410845A (en) * 2004-02-07 2005-08-10 Joe O'mahoney A locker for recharging mobile phones
GB2410845B (en) * 2004-02-07 2006-11-22 Joe O'mahoney Wireless-enabled locker for recharging mobile phones

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Legal Events

Date Code Title Description
PS Patent sealed
PLNP Patent lapsed through nonpayment of renewal fees