US3878419A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Precision base mercury vapor lamp
Assignee: Individual
•
Filing: 1973-12-17
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Granted: 1975-04-15
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Expires: 1993-12-17
Abstract
Abstract A mercury vapor lamp having a light transmissive envelope defining an arcuate capillary plasma cavity. A mounting base secured to one end of the envelope has a configuration which is geometrically unique with respect to the position and spatial orientation of the plasma cavity. A mounting block and clamping arrangement have a configuration complementary to that of the lamp base so as to receive and releasably secure the lamp base and, therefore, the plasma cavity in a fixed predetermined position and orientation relative to its operating environment. The lamp is energized by means of an electrical potentional applied to electrodes in the plasma cavity or by reactance coupling an r-f power source to the cavity.
Inventors
- 👤 Carlo F Lafiandra
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-26 22:05
CPC Classifications
G; G03; G03F; G03F7/00; G03F7/70; G03F7/70008; G03F7/70016; H; H01; H01J; H01J5/00; H01J5/50
Claims Analysis
Total Claims: 8
Claim 1
Independent Claim
111 words
A gaseous discharge lamp, comprising: a. a radiation-transmitting tubular envelope defining a plasma cavity of arcuate configuration and capillary cross-section containing an ionizable gaseous substance; b. a rigid mounting base fixedly secured to one end of said envelope having a configuration which is geometrically unique with respect to a predetermined position and spatial orientation of said envelope whereby installation of the lamp in its operating environment automatically and reproducibly places the envelope and, concomitantly, the plasma cavity of the lamp in a predetermined position and spatial orientation relative to said environment; and c. means for coupling the lamp to a power source for applying an operating potential to said plasma cavity.
Claim 2
Dependent Claim
111 words
A gaseous discharge lamp, comprising: a. a radiation-transmitting tubular envelope defining a plasma cavity of arcuate configuration and capillary cross-section containing an ionizable gaseous substance; b. a rigid mounting base fixedly secured to one end of said envelope having a configuration which is geometrically unique with respect to a predetermined position and spatial orientation of said envelope whereby installation of the lamp in its operating environment automatically and reproducibly places the envelope and, concomitantly, the plasma cavity of the lamp in a predetermined position and spatial orientation relative to said environment; and c. means for coupling the lamp to a power source for applying an operating potential to said plasma cavity.
Claim 3
Dependent Claim
25 words
A gaseous discharge lamp according to claim 1, wherein at least a portion of the external surface of said mounting base is non-circular in cross-section.
Claim 4
Dependent Claim
23 words
A gaseous discharge lamp according to claim 2, wherein the external surface of said mounting base takes the form of a hexagonal prism.
Claim 5
Dependent Claim
69 words
A gaseous discharge lamp according to claim 3 wherein said base contains a co-axial bore and said one end of the envelope terminates in a cylindrical stub of significantly smaller axial and radial dimensions than said bore, said stub being disposed and secured in said bore in a position such as to establish a predetermined spatial relation and orientation between the envelope and the prism faces of said base.
Claim 6
Dependent Claim
59 words
A gaseous discharge lamp according to claim 4 wherein said mounting base is electrically conductive and said coupling means include: a. an electrode adjacent each end of said cavity, the electrode proximate the mounting base being electrically connected thereto; and b. a highly flexible connection lead on the envelope electrically connected to the electrode remote from the mounting base.
Claim 7
Dependent Claim
79 words
In combination, a gaseous discharge lamp according to claim 5 and a mounting fixture therefor comprising: a. a mounting block having locating faces complementary to and in mating relationship with selected ones of said planar faces of the mounting base; b. a locating stop abutting the end of said mounting base remote from the envelope; and c. a removable clamping assembly maintaining the planar faces of the mounting base pressed firmly against the locating faces of the mounting fixture.
Claim 8
Dependent Claim
59 words
In combination, a gaseous discharge lamp according to claim 1 and a mounting fixture therefore comprising: a. a mounting block having a configuration complementary to and adapted to receive said mounting base in a fixed position defined by its co-action with the configuration of said mounting base; and b. means releasably retaining said mounting base in said mounting block.
References Cited (Backward Citations)
US3156841A
Cited
US3117248A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1978-04-14 | 1978-10-14 | 1979-04-15 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1982-04-14 | 1982-10-14 | 1983-04-15 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1986-04-14 | 1986-10-14 | 1987-04-15 | $7700.00 | Window Closed / Lapsed |