GB9704244D0 - Alarm apparatus - Google Patents

Alarm apparatus

Info

Publication number
GB9704244D0
GB9704244D0 GBGB9704244.4A GB9704244A GB9704244D0 GB 9704244 D0 GB9704244 D0 GB 9704244D0 GB 9704244 A GB9704244 A GB 9704244A GB 9704244 D0 GB9704244 D0 GB 9704244D0
Authority
GB
United Kingdom
Prior art keywords
alarm apparatus
alarm
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.)
Granted
Application number
GBGB9704244.4A
Other versions
GB2310728A (en
GB2310728B (en
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.)
LLOYD-JONES DAVID
Original Assignee
LLOYD-JONES DAVID
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 LLOYD-JONES DAVID filed Critical LLOYD-JONES DAVID
Publication of GB9704244D0 publication Critical patent/GB9704244D0/en
Publication of GB2310728A publication Critical patent/GB2310728A/en
Application granted granted Critical
Publication of GB2310728B publication Critical patent/GB2310728B/en
Anticipated expiration legal-status Critical
Expired - Lifetime legal-status Critical Current

Links

Classifications

    • H—ELECTRICITY
    • H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
    • H02H—EMERGENCY PROTECTIVE CIRCUIT ARRANGEMENTS
    • H02H3/00—Emergency protective circuit arrangements for automatic disconnection directly responsive to an undesired change from normal electric working condition with or without subsequent reconnection ; integrated protection
    • H02H3/14—Emergency protective circuit arrangements for automatic disconnection directly responsive to an undesired change from normal electric working condition with or without subsequent reconnection ; integrated protection responsive to occurrence of voltage on parts normally at earth potential
    • G—PHYSICS
    • G01—MEASURING; TESTING
    • G01R—MEASURING ELECTRIC VARIABLES; MEASURING MAGNETIC VARIABLES
    • G01R19/00—Arrangements for measuring currents or voltages or for indicating presence or sign thereof
    • G01R19/145—Indicating the presence of current or voltage
    • G01R19/155—Indicating the presence of voltage
    • H—ELECTRICITY
    • H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
    • H02H—EMERGENCY PROTECTIVE CIRCUIT ARRANGEMENTS
    • H02H3/00—Emergency protective circuit arrangements for automatic disconnection directly responsive to an undesired change from normal electric working condition with or without subsequent reconnection ; integrated protection
    • H02H3/02—Details
    • H02H3/04—Details with warning or supervision in addition to disconnection, e.g. for indicating that protective apparatus has functioned

Landscapes

  • Physics & Mathematics (AREA)
  • General Physics & Mathematics (AREA)
  • Emergency Alarm Devices (AREA)
GB9704244A 1996-02-29 1997-02-28 Alarm apparatus Expired - Lifetime GB2310728B (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
GBGB9604328.6A GB9604328D0 (en) 1996-02-29 1996-02-29 Alarm apparatus

Publications (3)

Publication Number Publication Date
GB9704244D0 true GB9704244D0 (en) 1997-04-16
GB2310728A GB2310728A (en) 1997-09-03
GB2310728B GB2310728B (en) 1999-02-17

Family

ID=10789642

Family Applications (2)

Application Number Title Priority Date Filing Date
GBGB9604328.6A Pending GB9604328D0 (en) 1996-02-29 1996-02-29 Alarm apparatus
GB9704244A Expired - Lifetime GB2310728B (en) 1996-02-29 1997-02-28 Alarm apparatus

Family Applications Before (1)

Application Number Title Priority Date Filing Date
GBGB9604328.6A Pending GB9604328D0 (en) 1996-02-29 1996-02-29 Alarm apparatus

Country Status (1)

Country Link
GB (2) GB9604328D0 (en)

Families Citing this family (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
ES2184604B1 (en) * 2001-03-30 2004-05-01 Grupo Ormazabal, S.A. SOUND ALARM PREVENTION SYSTEM FOR GROUNDING IN HIGH VOLTAGE CELLS.
GB201203376D0 (en) * 2012-02-26 2012-04-11 Scotia Gas Networks Sgn A method and apparatus for detectong when a current and/or voltage has exceeded a predetermined level

Family Cites Families (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3699432A (en) * 1970-06-25 1972-10-17 Environment Metrology Corp Electrical shock hazard detection system with station scanning and indicating means
US3823342A (en) * 1973-06-25 1974-07-09 Consolidation Coal Co Voltage protection circuitry for direct current powered machinery
US4755805A (en) * 1986-05-22 1988-07-05 Flowmole Corporation Current sensing alarm arrangement for monitoring the presence of high voltage
US5469063A (en) * 1993-08-23 1995-11-21 Bowden's Automated Products, Inc. Method and apparatus for testing for a high voltage on the chassis of an electronic apparatus

Also Published As

Publication number Publication date
GB2310728A (en) 1997-09-03
GB2310728B (en) 1999-02-17
GB9604328D0 (en) 1996-05-01

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Legal Events

Date Code Title Description
PCNP Patent ceased through non-payment of renewal fee

Effective date: 20070228

728V Application for restoration filed (sect. 28/1977)
S28 Restoration of ceased patents (sect. 28/pat. act 1977)

Effective date: 20080521

732E Amendments to the register in respect of changes of name or changes affecting rights (sect. 32/1977)

Free format text: REGISTERED BETWEEN 20150226 AND 20150304

PE20 Patent expired after termination of 20 years

Expiry date: 20170227