US3764844A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Gas discharge lamp and method for making same
Assignee: Individual
•
Filing: 1972-04-28
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Granted: 1973-10-09
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Expires: 1992-04-28
Abstract
Abstract A gas discharge lamp has a glass tube which constitutes a first helix extending in the manner of a multi-turn screw thread from a first end portion, and a second helix encompassing the first helix. The second helix is interconnected with the first helix and extends in the manner of a multi-turn screw thread to a second end portion of the glass tube. Lamp electrodes are located in the mentioned first and second end portions. A gas filling is contained in the glass tube to provide the requisite gas discharge for emiting light from the lamp. The lamp may include a hollow-cylindrical echelon lens encompassing the first and second helices. This lens may have an annular oblate-spheroidal central portion encompassing the first and second helices.
Inventors
- 👤 A Schmidt
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-26 21:23
CPC Classifications
H; H01; H01J; H01J61/00; H01J61/02; H01J61/30; H01J61/32; H01J61/327; H01J61/025
Claims Analysis
Total Claims: 12
Claim 1
Independent Claim
105 words
A gas discharge lamp comprising in combination: a glass tube having a first end portion and a second end portion, and constituting a first helix extending in the manner of a multi-turn screw thread from said first end portion, and a second helix encompassing said first helix, said second helix being interconnected with said first helix and extending in the manner of a multi-turn screw thread to said second end portion; first lamp electrode and terminal means in and at said first end portion; second lamp electrode and terminal means in and at said second end portion; and a gas filling in said glass tube.
Claim 2
Dependent Claim
105 words
A gas discharge lamp comprising in combination: a glass tube having a first end portion and a second end portion, and constituting a first helix extending in the manner of a multi-turn screw thread from said first end portion, and a second helix encompassing said first helix, said second helix being interconnected with said first helix and extending in the manner of a multi-turn screw thread to said second end portion; first lamp electrode and terminal means in and at said first end portion; second lamp electrode and terminal means in and at said second end portion; and a gas filling in said glass tube.
Claim 3
Dependent Claim
21 words
A lamp as claimed in claim 1, including in said combination: a hollow lens structure encompassing said first and second helices.
Claim 4
Dependent Claim
21 words
A lamp as claimed in claim 1, including in said combination: a hollow echelon lens encompassing said first and second helices.
Claim 5
Dependent Claim
22 words
A lamp as claimed in claim 3, wherein: said lens has an annular oblate-spheroidal central portion encompassing said first and second helices.
Claim 6
Dependent Claim
51 words
A lamp as claimed in claim 4, wherein: said first helix extends essentially along a first imaginary cylinder located inside of and being essentially concentric with said lens; and said second helix extends essentially along a second imaginary cylinder located inside of and being essentially concentric with said first imaginary cylinder.
Claim 7
Dependent Claim
34 words
A lamp as claimed In claim 1, including in said combination: a hollow cover glass encompassing said first and second helices and having an essentially cylindrical outer surface and an essentially cylindrical inner surface.
Claim 8
Dependent Claim
49 words
A lamp as claimed in claim 1, including in said combination: a hollow cover glass encompassing said first and second helices and having a part laterally surrounding said first and second helices, at least said part laterally surrounding said first and second helices having an essentially uniform wall thickness.
Claim 9
Dependent Claim
141 words
A gas discharge lamp comprising in combination: a glass tube having a first end portion and a second end portion, and constituting a first helix extending in the manner of a multi-turn screw thread from said first end portion, and a second helix encompassing said first helix, said second helix being interconnected with said first helix and extending in the manner of a multi-turn screw thread to said second end portion, one of said first and second helices extending in the manner of a right-hand multi-turn screw thread, and the other of said first and second helices extending in the manner of a left-hand multi-turn screw thread; first lamp electrode and terminal means in and at said first end portion; second lamp electrode and terminal means in and at said second end portion; and a gas filling in said glass tube.
Claim 10
Dependent Claim
141 words
A gas discharge lamp comprising in combination: a glass tube having a first end portion and a second end portion, and constituting a first helix extending in the manner of a multi-turn screw thread from said first end portion, and a second helix encompassing said first helix, said second helix being interconnected with said first helix and extending in the manner of a multi-turn screw thread to said second end portion, one of said first and second helices extending in the manner of a right-hand multi-turn screw thread, and the other of said first and second helices extending in the manner of a left-hand multi-turn screw thread; first lamp electrode and terminal means in and at said first end portion; second lamp electrode and terminal means in and at said second end portion; and a gas filling in said glass tube.
Claim 11
Dependent Claim
36 words
A gas discharge lamp as claimed in claim 8, including in said combination: a hollow cover glass encompassing said first and second helices and having an essentially cylindrical outer surface and an essentially cylindrical inner surface.
Claim 12
Dependent Claim
51 words
A gas discharge lamp as claimed in claim 8, including in said combination: a hollow cover glass encompassing said first and second helices and having a part laterally surrounding said first and second helices, at least said part laterally surrounding said first and second helices having an essentially uniform wall thickness.
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) | 1976-10-08 | 1977-04-09 | 1977-10-09 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1980-10-08 | 1981-04-09 | 1981-10-09 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1984-10-08 | 1985-04-09 | 1985-10-09 | $7700.00 | Window Closed / Lapsed |