Patent US2193418A successfully refreshed from Google Patents.
Patent US4433271A successfully refreshed from Google Patents.
US4433271A
Expired / Lapsed
US
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High pressure discharge lamp
Assignee: Toshiba Corp
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Filing: 1981-05-18
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Granted: 1984-02-21
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Expires: 2001-05-18
Abstract
Abstract A high pressure discharge lamp including discharge tube having at least two electrodes at opposite ends thereof, an outer bulb housing the discharge tube, a circuit for starting the discharge tube and a glow starter which is covered with a heat shield member and disposed between the discharge tube and the outer bulb.
Inventors
- 👤 Akihiro Inoue
- 👤 Akihiro Kamiya
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-29 03:56
CPC Classifications
H; H01; H01J; H01J61/00; H01J61/02; H01J61/54; H01J61/545; H01J61/56; H01J61/82
Claims Analysis
Total Claims: 6
Claim 1
Independent Claim
112 words
A high pressure discharge lamp comprising; a discharge tube having a main electrode at each end thereof; an outer bulb housing said discharge tube; a circuit for starting said discharge tubes; and a glow starter covered with a heat shield member and disposed between said discharge tube and said outer bulb wherein said heat shield member comprises a heat insulating covering member wrapped around a major portion of the surface area of said glow starter and a mounting member engaging said covering member whereby said glow starter is subject to decreased heat radiation from said discharge tube and whereby said glow starter is protected from heat during the manufacturing of said lamp.
Claim 2
Dependent Claim
112 words
A high pressure discharge lamp comprising; a discharge tube having a main electrode at each end thereof; an outer bulb housing said discharge tube; a circuit for starting said discharge tubes; and a glow starter covered with a heat shield member and disposed between said discharge tube and said outer bulb wherein said heat shield member comprises a heat insulating covering member wrapped around a major portion of the surface area of said glow starter and a mounting member engaging said covering member whereby said glow starter is subject to decreased heat radiation from said discharge tube and whereby said glow starter is protected from heat during the manufacturing of said lamp.
Claim 3
Dependent Claim
25 words
The high pressure discharge lamp of claim 1, wherein at least one of said covering member and said mounting member is made of metal plate.
Claim 4
Dependent Claim
20 words
The high pressure discharge lamp of claim 2, wherein said heat shield member is mounted directly to a support structure.
Claim 5
Dependent Claim
32 words
The high pressure discharge lamp of claim 1, further comprising: a support member for supporting said discharge tube; and said mounting member made of metal and mounted directly on said support member.
Claim 6
Dependent Claim
26 words
The high pressure discharge lamp of claim 1 wherein said covering member consists of a material selected from the group consisting of glass wool and mica.
References Cited (Backward Citations)
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Cited
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Cited
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USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1987-02-20 | 1987-08-22 | 1988-02-21 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1991-02-20 | 1991-08-22 | 1992-02-21 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1995-02-20 | 1995-08-22 | 1996-02-21 | $7700.00 | Window Closed / Lapsed |