Patent US3760217A successfully refreshed from Google Patents.
US3760217A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Single-ended halogen-cycle incandescent lamp with bridgeless mount assembly
Assignee: Philips North America LLC
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Filing: 1972-08-25
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Granted: 1973-09-18
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Expires: 1992-08-25
Abstract
Abstract The coiled filament of a tubular halogen-cycle type lamp is suspended within the envelope by a mount assembly which is so constructed that the lead wires are rigidly coupled to and electrically insulated from each other without the quartz bridge member customarily employed. Discoloration of the envelope in the region of the bridge member is inhibited and the lumen maintenance of the lamp is thus enhanced.
Inventors
- 👤 J Martin
- 👤 J Gorecki
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-28 12:22
CPC Classifications
H; H01; H01K; H01K1/00; H01K1/18; H01K1/24
Claims Analysis
Total Claims: 11
Claim 1
Independent Claim
206 words
A single-ended halogen-cycle incandescent lamp comprising: a tubular envelope of vitreous light-transmitting material that contains a halogen additive and has a press seal at one end and a closed centrally-disposed fused hollow tip at its opposite end, a coiled tungsten filament of elongated configuration suspended in longitudinal position within said envelope, and a bridgeless mount assembly holding said filament in such suspended position comprising (a) a pair of rigid lead wires of unequal length that are embedded in said press seal and extend into said envelope, (b) means electrically insulating a medial portion of the long lead wire, (c) first coupling means fastening the end of the long lead wire to one end of said filament and engaging the hollow tip of said envelope, and (d) second coupling means fastening the short lead wire to the other end of said filament and to an insulated part of the long lead wire, said long lead wire being offset toward and extending along the wall of said envelope and being terminated by a transverse arm segment that extends toward the filament and, in turn, is terminated by a longitudinally-disposed coiled segment that is in substantially coaxial alignment with the filament and constitutes part of said first coupling means.
Claim 2
Dependent Claim
206 words
A single-ended halogen-cycle incandescent lamp comprising: a tubular envelope of vitreous light-transmitting material that contains a halogen additive and has a press seal at one end and a closed centrally-disposed fused hollow tip at its opposite end, a coiled tungsten filament of elongated configuration suspended in longitudinal position within said envelope, and a bridgeless mount assembly holding said filament in such suspended position comprising (a) a pair of rigid lead wires of unequal length that are embedded in said press seal and extend into said envelope, (b) means electrically insulating a medial portion of the long lead wire, (c) first coupling means fastening the end of the long lead wire to one end of said filament and engaging the hollow tip of said envelope, and (d) second coupling means fastening the short lead wire to the other end of said filament and to an insulated part of the long lead wire, said long lead wire being offset toward and extending along the wall of said envelope and being terminated by a transverse arm segment that extends toward the filament and, in turn, is terminated by a longitudinally-disposed coiled segment that is in substantially coaxial alignment with the filament and constitutes part of said first coupling means.
Claim 3
Dependent Claim
41 words
The halogen incandescent lamp of claim 1 wherein said first coupling means includes a spud wire that extends into the tip of the envelope and into the coiled end segment of the long lead wire and associated end of the filament.
Claim 4
Dependent Claim
37 words
The halogen incandescent lamp of claim 1 wherein said insulating means comprises a sleeve of electrically non-conductive material that encloses the offset medial portion of the long lead wire which extends along the wall of said envelope.
Claim 5
Dependent Claim
44 words
The halogen incandescent lamp of claim 3 wherein a wire loop is anchored to a medial part of said coiled filament and extends transversely therefrom toward said insulating sleeve and the wall of said envelope and thereby constitute auxiliary support means for said filament.
Claim 6
Dependent Claim
46 words
The halogen incandescent lamp of claim 3 wherein said second coupling means inlcudes a wire connector component that extends transversely from the associated end of said filament to the long lead wire and is terminated by a coiled segment that encircles and grips said insulating sleeve.
Claim 7
Dependent Claim
82 words
The halogen incandescent lamp of claim 5 wherein; the coiled end segment of said long lead wire extends into and is threadably interlocked with the associated end of the filament, a spud wire extends from the tip of said envelope into the coiled end segment of said log lead wire, and the end of said wire connector component that is fastened to the other end of said filament comprises a coiled segment that extends into and is threadably interlocked with the filament.
Claim 8
Dependent Claim
86 words
The halogen incandescent lamp of claim 5 wherein; the coiled end segment of said long lead wire is axially spaced from the associated end of the filament and is of substantially the same inner diameter as the coiled filament, a coiled connector component extends into and is threadably interlocked with the adjacent portions of the coiled end segment of said long lead wire and associated end of the filament, and a spud wire extends from the tip of saiD envelope into the said coiled connector component.
Claim 9
Dependent Claim
88 words
The halogen incandescent lamp of claim 5 wherien; the end of the short lead wire is also terminated by a longitudinally-disposed coiled segment that (a) extends into and is threadably interlocked with the associated end of said filament, and (b) is joined to a second coiled segment by an opened turn, said wire connector component has a depending uncoiled leg segment that extends through the opened turn and into the said second coiled segment of the short lead wire that protrudes from the associated end of said filament.
Claim 10
Dependent Claim
70 words
The halogen incandescent lamp of claim 3 wherein; said filament is of the coiiled-coil type, and the short lead wire is (a) offset toward the long lead wire, (b) has a medial coiled segment that encircles and grips said insulating sleeve, and (c) is terminated by leg segment that is welded to a coiled section of the filament which is joined to the filament barrel by an opened primary turn.
Claim 11
Dependent Claim
64 words
The halogen incandescent lamp of claim 3 wherein; said filament is of the coiled-coil type, and said second coupling means inlcudes a generally U-shaped wire connector that is terminated at each end by a longitudinally-disposed coiled leg segment, one of which encircles and grips said insulating sleeve and the other of which encircles and is secured to the end of the short lead wire.
References Cited (Backward Citations)
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1976-09-17 | 1977-03-19 | 1977-09-18 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1980-09-17 | 1981-03-19 | 1981-09-18 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1984-09-17 | 1985-03-19 | 1985-09-18 | $7700.00 | Window Closed / Lapsed |