GB2269494B - Smoke alarm - Google Patents

Smoke alarm

Info

Publication number
GB2269494B
GB2269494B GB9318966A GB9318966A GB2269494B GB 2269494 B GB2269494 B GB 2269494B GB 9318966 A GB9318966 A GB 9318966A GB 9318966 A GB9318966 A GB 9318966A GB 2269494 B GB2269494 B GB 2269494B
Authority
GB
United Kingdom
Prior art keywords
smoke alarm
smoke
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.)
Expired - Fee Related
Application number
GB9318966A
Other versions
GB2269494A (en
GB9318966D0 (en
Inventor
Roy Clegg
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.)
DERBYSHIRE MAID Ltd
Original Assignee
DERBYSHIRE MAID 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
Family has litigation
First worldwide family litigation filed litigation Critical https://patents.darts-ip.com/?family=10722176&utm_source=google_patent&utm_medium=platform_link&utm_campaign=public_patent_search&patent=GB2269494(B) "Global patent litigation dataset” by Darts-ip is licensed under a Creative Commons Attribution 4.0 International License.
Application filed by DERBYSHIRE MAID Ltd filed Critical DERBYSHIRE MAID Ltd
Publication of GB9318966D0 publication Critical patent/GB9318966D0/en
Publication of GB2269494A publication Critical patent/GB2269494A/en
Application granted granted Critical
Publication of GB2269494B publication Critical patent/GB2269494B/en
Anticipated expiration legal-status Critical
Expired - Fee Related legal-status Critical Current

Links

Classifications

    • G—PHYSICS
    • G08—SIGNALLING
    • G08B—SIGNALLING OR CALLING SYSTEMS; ORDER TELEGRAPHS; ALARM SYSTEMS
    • G08B29/00—Checking or monitoring of signalling or alarm systems; Prevention or correction of operating errors, e.g. preventing unauthorised operation
    • G08B29/18—Prevention or correction of operating errors
    • G08B29/181—Prevention or correction of operating errors due to failing power supply
    • H—ELECTRICITY
    • H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
    • H02J—CIRCUIT ARRANGEMENTS OR SYSTEMS FOR SUPPLYING OR DISTRIBUTING ELECTRIC POWER; SYSTEMS FOR STORING ELECTRIC ENERGY
    • H02J9/00—Circuit arrangements for emergency or stand-by power supply, e.g. for emergency lighting
    • H02J9/04—Circuit arrangements for emergency or stand-by power supply, e.g. for emergency lighting in which the distribution system is disconnected from the normal source and connected to a standby source
    • H02J9/06—Circuit arrangements for emergency or stand-by power supply, e.g. for emergency lighting in which the distribution system is disconnected from the normal source and connected to a standby source with automatic change-over, e.g. UPS systems
    • H02J9/061—Circuit arrangements for emergency or stand-by power supply, e.g. for emergency lighting in which the distribution system is disconnected from the normal source and connected to a standby source with automatic change-over, e.g. UPS systems for DC powered loads
GB9318966A 1992-09-19 1993-09-14 Smoke alarm Expired - Fee Related GB2269494B (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
GB929219845A GB9219845D0 (en) 1992-09-19 1992-09-19 A capacitor back-up for mains operated smoke alarms

Publications (3)

Publication Number Publication Date
GB9318966D0 GB9318966D0 (en) 1993-10-27
GB2269494A GB2269494A (en) 1994-02-09
GB2269494B true GB2269494B (en) 1995-03-22

Family

ID=10722176

Family Applications (2)

Application Number Title Priority Date Filing Date
GB929219845A Pending GB9219845D0 (en) 1992-09-19 1992-09-19 A capacitor back-up for mains operated smoke alarms
GB9318966A Expired - Fee Related GB2269494B (en) 1992-09-19 1993-09-14 Smoke alarm

Family Applications Before (1)

Application Number Title Priority Date Filing Date
GB929219845A Pending GB9219845D0 (en) 1992-09-19 1992-09-19 A capacitor back-up for mains operated smoke alarms

Country Status (1)

Country Link
GB (2) GB9219845D0 (en)

Families Citing this family (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US5881021A (en) * 1997-03-10 1999-03-09 Dreamco Enterprises Inc. Quick charge capacitor powered non-interruptible wearable personal security alarm
NL1006217C2 (en) * 1997-06-04 1998-12-07 Iq Sec N V S A Container for securing valuable goods provided with a device for supplying energy to a consumer, in particular destruction means and a device for application in a container.
US6137192A (en) * 1998-05-15 2000-10-24 Energenius, Inc. Embedded backup energy storage unit
US6362743B1 (en) * 1999-09-09 2002-03-26 Ranco Incorporated Of Delaware Smoke alarm with dual sensing technologies and dual power sources
GB2362768A (en) * 2000-05-26 2001-11-28 Motorola Israel Ltd Capacitor fed back-up power supply

Citations (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4145618A (en) * 1977-09-15 1979-03-20 Wabco Westinghouse Arrangement for providing auxiliary energy source for static inverter used with traction motor drive during power interruption
US4155081A (en) * 1977-10-25 1979-05-15 Honeywell Inc. Rechargeable battery backup power source for an ionization smoke detector device
US4380760A (en) * 1980-02-21 1983-04-19 General Electric Company Smoke detector with delayed alarm after change to stand-by power
GB2192504A (en) * 1986-06-20 1988-01-13 Potterton Int Ltd Motor apparatus for a control valve
EP0284479A1 (en) * 1987-03-24 1988-09-28 Electricite De France Method and emergency power supply for alleviating power supply interruptions
GB2211679A (en) * 1987-10-27 1989-07-05 Eric Paul Paterson Solar powered current supply circuit
US5136175A (en) * 1987-12-12 1992-08-04 U.S. Philips Corporation Current supply circuit arrangement
EP0594288A1 (en) * 1992-08-31 1994-04-27 Disys Corporation Smoke detector with capacitor back-up

Patent Citations (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4145618A (en) * 1977-09-15 1979-03-20 Wabco Westinghouse Arrangement for providing auxiliary energy source for static inverter used with traction motor drive during power interruption
US4155081A (en) * 1977-10-25 1979-05-15 Honeywell Inc. Rechargeable battery backup power source for an ionization smoke detector device
US4380760A (en) * 1980-02-21 1983-04-19 General Electric Company Smoke detector with delayed alarm after change to stand-by power
GB2192504A (en) * 1986-06-20 1988-01-13 Potterton Int Ltd Motor apparatus for a control valve
EP0284479A1 (en) * 1987-03-24 1988-09-28 Electricite De France Method and emergency power supply for alleviating power supply interruptions
GB2211679A (en) * 1987-10-27 1989-07-05 Eric Paul Paterson Solar powered current supply circuit
US5136175A (en) * 1987-12-12 1992-08-04 U.S. Philips Corporation Current supply circuit arrangement
EP0594288A1 (en) * 1992-08-31 1994-04-27 Disys Corporation Smoke detector with capacitor back-up

Non-Patent Citations (1)

* Cited by examiner, † Cited by third party
Title
"DICON 380MC - Mains powered smoke alarm with capacitor backup" pub. Dicon *

Also Published As

Publication number Publication date
GB2269494A (en) 1994-02-09
GB9219845D0 (en) 1992-10-28
GB9318966D0 (en) 1993-10-27

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Legal Events

Date Code Title Description
708B Proceeding under section 8(1) patents act 1977
713E Proceeding under section 13(1) and 13(3) of the patents act 1977
713C Proceeding under section 13(3) of the patents act 1977
713F Application for mention of inventor (sect. 13(1)/1977) allowed
732E Amendments to the register in respect of changes of name or changes affecting rights (sect. 32/1977)
PCNP Patent ceased through non-payment of renewal fee

Effective date: 19990914