GB2041641B - Gls tungsten-filament incandescent lamp - Google Patents

Gls tungsten-filament incandescent lamp

Info

Publication number: GB2041641B
Authority: GB; United Kingdom
Prior art keywords: gls; tungsten; incandescent lamp; filament incandescent; filament
Prior art date: 1979-02-05
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

GB7903993A

Other versions

GB2041641A (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.)

EMI Group Ltd

Original Assignee

Thorn Electrical Industries 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.)

1979-02-05

Filing date

1979-02-05

Publication date

1982-11-17

1979-02-05 Application filed by Thorn Electrical Industries Ltd filed Critical Thorn Electrical Industries Ltd

1979-02-05 Priority to GB7903993A priority Critical patent/GB2041641B/en

1980-09-10 Publication of GB2041641A publication Critical patent/GB2041641A/en

1982-11-17 Application granted granted Critical

1982-11-17 Publication of GB2041641B publication Critical patent/GB2041641B/en

Status Expired legal-status Critical Current

Classifications

- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01K—ELECTRIC INCANDESCENT LAMPS
- H01K1/00—Details
- H01K1/52—Means for obtaining or maintaining the desired pressure within the vessel
- H01K1/54—Means for absorbing or absorbing gas, or for preventing or removing efflorescence, e.g. by gettering
- H01K1/56—Means for absorbing or absorbing gas, or for preventing or removing efflorescence, e.g. by gettering characterised by the material of the getter
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01K—ELECTRIC INCANDESCENT LAMPS
- H01K1/00—Details
- H01K1/28—Envelopes; Vessels
- H01K1/34—Double wall vessels
- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02B—CLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TO BUILDINGS, e.g. HOUSING, HOUSE APPLIANCES OR RELATED END-USER APPLICATIONS
- Y02B20/00—Energy efficient lighting technologies, e.g. halogen lamps or gas discharge lamps

GB7903993A 1979-02-05 1979-02-05 Gls tungsten-filament incandescent lamp Expired GB2041641B (en)

Priority Applications (1)

Application Number	Priority Date	Filing Date	Title
GB7903993A GB2041641B (en)	1979-02-05	1979-02-05	Gls tungsten-filament incandescent lamp

Applications Claiming Priority (1)

Application Number	Priority Date	Filing Date	Title
GB7903993A GB2041641B (en)	1979-02-05	1979-02-05	Gls tungsten-filament incandescent lamp

Publications (2)

Publication Number	Publication Date
GB2041641A GB2041641A (en)	1980-09-10
GB2041641B true GB2041641B (en)	1982-11-17

Family

ID=10502969

Family Applications (1)

Application Number	Title	Priority Date	Filing Date
GB7903993A Expired GB2041641B (en)	1979-02-05	1979-02-05	Gls tungsten-filament incandescent lamp

Country Status (1)

Country	Link
GB (1)	GB2041641B (en)

Families Citing this family (4)

* Cited by examiner, † Cited by third party
Publication number	Priority date	Publication date	Assignee	Title
US4598225A (en) *	1983-02-25	1986-07-01	Gte Products Corporation	Electric lamp with high outer-envelope to inner-envelope wall-thickness ratio
US4524302A (en) *	1983-08-01	1985-06-18	General Electric Company	General service incandescent lamp with improved efficiency
US4591752A (en) *	1983-10-14	1986-05-27	Duro-Test Corporation	Incandescent lamp with high pressure rare gas filled tungsten-halogen element and transparent thick walled safety envelope
JP3471391B2 (en) *	1993-06-30	2003-12-02	林原健	New incandescent bulbs and their uses

1979
- 1979-02-05 GB GB7903993A patent/GB2041641B/en not_active Expired

Also Published As

Publication number	Publication date
GB2041641A (en)	1980-09-10

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Legal Events

Date	Code	Title	Description
1984-02-22	746	Register noted 'licences of right' (sect. 46/1977)
1992-09-30	PCNP	Patent ceased through non-payment of renewal fee