Patent US4144475A successfully refreshed from Google Patents.
US4144475A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Gas and/or vapor discharge lamp
Assignee: US Philips Corp
•
Filing: 1978-02-21
•
Granted: 1979-03-13
•
Expires: 1998-02-21
Abstract
Abstract The invention relates to high pressure sodium vapor discharge lamp comprising a discharge tube and an outer bulb enveloping this tube, a glow starter being disposed in the space between that discharge tube and the outer bulb. In accordance with the invention the glow starter is resiliently clamped between the two rigid electric conductors which supply the discharge tube with current.
Inventors
- 👤 Robert R. M. Delen
- 👤 Duido J. J. Lenaerts
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-29 21:02
CPC Classifications
H; H01; H01J; H01J61/00; H01J61/02; H01J61/30; H01J61/34; H01J61/54; H01J61/541
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
108 words
A gas and/or vapour discharge lamp comprising a discharge tube and an outer bulb enveloping said tube in spaced relationship, two stiff electric supply conductors supplying current to said discharge tube, an electric circuit component for operating said discharge tube being disposed in the space between said discharge tube and said outer bulb, said electric circuit component being clamped between said two stiff supply conductors, said electric circuit component being a glow starter, at least one of said supply conductors having a bend in the region of said electric circuit component, said one supply conductor bearing against said electric circuit component on both converging sides of said bend.
Claim 2
Dependent Claim
108 words
A gas and/or vapour discharge lamp comprising a discharge tube and an outer bulb enveloping said tube in spaced relationship, two stiff electric supply conductors supplying current to said discharge tube, an electric circuit component for operating said discharge tube being disposed in the space between said discharge tube and said outer bulb, said electric circuit component being clamped between said two stiff supply conductors, said electric circuit component being a glow starter, at least one of said supply conductors having a bend in the region of said electric circuit component, said one supply conductor bearing against said electric circuit component on both converging sides of said bend.
References Cited (Backward Citations)
DE7611934U1
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1982-03-12 | 1982-09-11 | 1983-03-13 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1986-03-12 | 1986-09-11 | 1987-03-13 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1990-03-12 | 1990-09-11 | 1991-03-13 | $7700.00 | Window Closed / Lapsed |