US4166232A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Filament lead-in support for tungsten halogen capsule for headlight
Assignee: GTE Sylvania Inc
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Filing: 1978-03-13
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Granted: 1979-08-28
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Expires: 1998-03-13
Abstract
Abstract In the manufacture of a capsule for a sealed beam lamp or vehicle headlight, two coiled filaments on lead-in wires are supported in a holder with sufficient rigidity to accurately maintain a predetermined spacing between the filaments during a subsequent press sealing operation. The filaments are then inserted into an open-ended glass tube and the open end is press sealed onto the filament lead-in wires at the same time that wire supports are embedded in the press seal. The wire supports are then connected to mounting rods in the finished capsule.
Inventors
- 👤 Stephen F. Kimball, III
- 👤 Lewis H. Palmer, III
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-29 01:28
CPC Classifications
H; H01; H01K; H01K3/00
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
150 words
A tungsten-halogen capsule assembly for a headlight comprising: two coiled filaments disposed in a glass capsule substantially transversely to the capsule axis, the glass capsule having a press seal at one end thereof with wire supports embedded in the longitudinal edges of the press seal and extending therefrom; one corresponding pair of the filament ends being supported by a U shaped wire embedded in the press seal and extending exteriorly of the capsule, the U shaped wire being electrically connected to a mounting rod which is fastened to one of the wire supports; the other ends of the filaments being each supported by a separate lead-in wire, one of the separate lead-in wires being electrically connected to another mounting rod which is fastened to another of the wire supports and the other separate lead-in wire being electrically connected to a rod which is unconnected to any of the wire supports.
Claim 2
Dependent Claim
150 words
A tungsten-halogen capsule assembly for a headlight comprising: two coiled filaments disposed in a glass capsule substantially transversely to the capsule axis, the glass capsule having a press seal at one end thereof with wire supports embedded in the longitudinal edges of the press seal and extending therefrom; one corresponding pair of the filament ends being supported by a U shaped wire embedded in the press seal and extending exteriorly of the capsule, the U shaped wire being electrically connected to a mounting rod which is fastened to one of the wire supports; the other ends of the filaments being each supported by a separate lead-in wire, one of the separate lead-in wires being electrically connected to another mounting rod which is fastened to another of the wire supports and the other separate lead-in wire being electrically connected to a rod which is unconnected to any of the wire supports.
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) | 1982-08-27 | 1983-02-26 | 1983-08-28 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1986-08-27 | 1987-02-26 | 1987-08-28 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1990-08-27 | 1991-02-26 | 1991-08-28 | $7700.00 | Window Closed / Lapsed |