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GB1062819A - Incandescent lamps using coiled-coil filaments - Google Patents

Incandescent lamps using coiled-coil filaments

Info

Publication number
GB1062819A
GB1062819A GB3252664A GB3252664A GB1062819A GB 1062819 A GB1062819 A GB 1062819A GB 3252664 A GB3252664 A GB 3252664A GB 3252664 A GB3252664 A GB 3252664A GB 1062819 A GB1062819 A GB 1062819A
Authority
GB
United Kingdom
Prior art keywords
coil
ratio
secondary coil
coiled
incandescent lamps
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
GB3252664A
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.)
GTE Sylvania Inc
Original Assignee
Sylvania Electric Products Inc
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 Sylvania Electric Products Inc filed Critical Sylvania Electric Products Inc
Publication of GB1062819A publication Critical patent/GB1062819A/en
Expired legal-status Critical Current

Links

Classifications

    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01K—ELECTRIC INCANDESCENT LAMPS
    • H01K1/00—Details
    • H01K1/02—Incandescent bodies
    • H01K1/14—Incandescent bodies characterised by the shape

Landscapes

  • Resistance Heating (AREA)

Abstract

1,062,819. Electric incandescent lamps. SYLVANIA ELECTRIC PRODUCTS Inc. Aug. 10, 1964 [Aug. 12, 1963], No. 32526/64. Heading H1F. In an incandescent lamp having a tubular quartz envelope containing a coiled coil filament, the ratio of the width of the primary coil (that is, the dimension approximately parallel to the axis of the secondary coil) to the height of the primary coil (that is, the dimension approximately perpendicular to the axis of the secondary coil) is greater than unity, and preferably lies between 1.5 and 6À0. The secondary coil may be of circular section or its dimensions in two mutually perpendicular directions at right angles to its length may have a ratio between 2 and 8. The primary coil is preferably wound on two parallel touching wire mandrels of the same diameter so that it has a width to height ratio of 2 and is approximately elliptical in shape. The filament is mounted on the spiral-shaped inner ends of the lead-in wires by threading a few turns of the primary winding thereon.
GB3252664A 1963-08-12 1964-08-10 Incandescent lamps using coiled-coil filaments Expired GB1062819A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
US30167463A 1963-08-12 1963-08-12

Publications (1)

Publication Number Publication Date
GB1062819A true GB1062819A (en) 1967-03-22

Family

ID=23164368

Family Applications (1)

Application Number Title Priority Date Filing Date
GB3252664A Expired GB1062819A (en) 1963-08-12 1964-08-10 Incandescent lamps using coiled-coil filaments

Country Status (1)

Country Link
GB (1) GB1062819A (en)

Cited By (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0271857A3 (en) * 1986-12-16 1990-05-16 Gte Products Corporation Compact coiled coil incandescent filament with supports
EP0271858A3 (en) * 1986-12-16 1990-05-16 Gte Products Corporation High voltage hard glass halogen capsule
EP0364831A3 (en) * 1988-10-17 1991-04-03 General Electric Company Electric incandescent lamp and method of manufacture therefor
EP1482536A4 (en) * 2002-03-05 2006-08-09 Mineta Company Ltd Coil filament
EP2605268A3 (en) * 2011-12-15 2014-06-18 General Electric Company Anisotropic indandescent light source

Cited By (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0271857A3 (en) * 1986-12-16 1990-05-16 Gte Products Corporation Compact coiled coil incandescent filament with supports
EP0271858A3 (en) * 1986-12-16 1990-05-16 Gte Products Corporation High voltage hard glass halogen capsule
EP0364831A3 (en) * 1988-10-17 1991-04-03 General Electric Company Electric incandescent lamp and method of manufacture therefor
EP1482536A4 (en) * 2002-03-05 2006-08-09 Mineta Company Ltd Coil filament
EP2605268A3 (en) * 2011-12-15 2014-06-18 General Electric Company Anisotropic indandescent light source

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