US3710169A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Halogen filament lamp having an internal all protection arrangement
Assignee: US Philips Corp
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Filing: 1970-02-19
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Granted: 1973-01-09
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Expires: 1990-02-19
Abstract
Abstract A halogen filament lamp having two pinch seals in which at least one of the seals a rod is embedded. The rod, which is secured at one end to a sealing foil and at the other end to the axially stretched filament, provides an improved internal fuse for the lamp.
Inventors
- 👤 Jampens G T
- 👤 V Notelteirs
- 👤 E Janssen
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-28 00:14
CPC Classifications
H; H01; H01K; H01K1/00; H01K1/38; H01K1/62; H01K1/66
Claims Analysis
Total Claims: 8
Claim 1
Independent Claim
100 words
An electric filament lamp comprising an envelope having at least one pinch seal, an halogen atmosphere within said envelope, a current conductor including a metal foil portion embedded within said pinch seal, a coiled coil filament within said envelope, and internal arc protection means comprising a rod entirely embedded within said pinch seal, said rod being independent of said conductor and filament, one end of said rod being connectEd to said metal foil portion of said current conductor and the other end being secured by means to an end of said coiled filament at a point within said pinch seal.
Claim 2
Dependent Claim
100 words
An electric filament lamp comprising an envelope having at least one pinch seal, an halogen atmosphere within said envelope, a current conductor including a metal foil portion embedded within said pinch seal, a coiled coil filament within said envelope, and internal arc protection means comprising a rod entirely embedded within said pinch seal, said rod being independent of said conductor and filament, one end of said rod being connectEd to said metal foil portion of said current conductor and the other end being secured by means to an end of said coiled filament at a point within said pinch seal.
Claim 3
Dependent Claim
106 words
An electric filament lamp comprising an envelope having pinch seals at the ends, an halogen atmosphere within said envelope, current conductors including metal foil portions embedded within said pinch seals, a coiled coil filament within said envelope and internal arc protection means comprising rods entirely embedded within said pinch seals and spaced from the inner walls of the envelope containing said halogen atmosphere, the ends of said rods remote from said filament being connected to said metal foil portions of said current conductors and the other ends of said rods being secured by means to the ends of said filament at points within said pinch seals.
Claim 4
Dependent Claim
106 words
An electric filament lamp comprising an envelope having pinch seals at the ends, an halogen atmosphere within said envelope, current conductors including metal foil portions embedded within said pinch seals, a coiled coil filament within said envelope and internal arc protection means comprising rods entirely embedded within said pinch seals and spaced from the inner walls of the envelope containing said halogen atmosphere, the ends of said rods remote from said filament being connected to said metal foil portions of said current conductors and the other ends of said rods being secured by means to the ends of said filament at points within said pinch seals.
Claim 5
Dependent Claim
41 words
An electric filament lamp as claimed in claim 2 wherein said point within said pinch seal is at a distance from the inner wall of the envelope containing said halogen atmosphere that is at least 1 millimeter per centimeter of filament.
Claim 6
Dependent Claim
79 words
In a halogen-type filament lamp of the type having at least one pinch seal, a coiled coil filament and current carrying means wherein the improvement comprises internal arc protection means including: a rod entirely embedded within said pinch seal, said rod being independent of said current carrying means and filament, one end of said rod being connected by means to said filament within said pinch seal, the other end of said rod being connected to said current carrying means.
Claim 7
Dependent Claim
79 words
In a halogen-type filament lamp of the type having at least one pinch seal, a coiled coil filament and current carrying means wherein the improvement comprises internal arc protection means including: a rod entirely embedded within said pinch seal, said rod being independent of said current carrying means and filament, one end of said rod being connected by means to said filament within said pinch seal, the other end of said rod being connected to said current carrying means.
Claim 8
Dependent Claim
39 words
The lamp as claimed in claim 4 wherein the distance of the rod end which is connected to said filament is at least 1 millimeter per centimeter of filament as measured from the internal end of said pinch seal.
References Cited (Backward Citations)
US3448322A
Cited
US3470410A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1976-01-09 | 1976-07-10 | 1977-01-09 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1980-01-09 | 1980-07-10 | 1981-01-09 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1984-01-09 | 1984-07-10 | 1985-01-09 | $7700.00 | Window Closed / Lapsed |