Patent US2676881A successfully refreshed from Google Patents.
Patent US4695757A successfully refreshed from Google Patents.
US4695757A
Expired / Lapsed
US
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Method and apparatus for cooling electrodeless lamps
Assignee: Fusion Systems Corp
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Filing: 1984-11-26
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Granted: 1987-09-22
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Expires: 2004-11-26
Abstract
Abstract A method of cooling the lamp envelope of an electrodeless lamp by directing a stream of cooling gas at the envelope while providing relative rotation between the lamp envelope and the stream of cooling gas. The relative rotation can be achieved by rotating the envelope, or the source of cooling gas, or both.
Inventors
- 👤 Michael G. Ury
- 👤 Charles H. Wood
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-09 06:06
CPC Classifications
H; H01; H01J; H01J61/00; H01J61/02; H01J61/52; H01J65/00; H01J65/04; H01J65/042; H01J65/044
Claims Analysis
Total Claims: 11
Claim 1
Independent Claim
73 words
A method of cooling an electrodeless lamp having a lamp envelope which gets extremely hot during operation, comprising the steps of, providing a source which produces at least a stream of cooling gas under pressure, directing said at least a stream of cooling gas at said lamp envelope, and providing relative rotative motion between said lamp envelope and said source, wherein said relative rotative motion comprises rotating said source completely about said envelope.
Claim 2
Independent Claim
73 words
A method of cooling an electrodeless lamp having a lamp envelope which gets extremely hot during operation, comprising the steps of, providing a source which produces at least a stream of cooling gas under pressure, directing said at least a stream of cooling gas at said lamp envelope, and providing relative rotative motion between said lamp envelope and said source, wherein said relative rotative motion comprises rotating said source completely about said envelope.
Claim 3
Independent Claim
92 words
A method of cooling an electrodeless lamp having a lamp envelope which gets extremely hot during operation, comprising the steps of, providing a source which produces at least a stream of cooling gas under pressure, directing said at least a stream of cooling gas at said lamp envelope, and providing relative rotative motion between said lamp envelope and said source, wherein said relative rotative motion comprises rotating said source about said envelope incompletely in one direction and then incompletely in the opposite direction so that said source oscillates about a given position.
Claim 4
Independent Claim
92 words
A method of cooling an electrodeless lamp having a lamp envelope which gets extremely hot during operation, comprising the steps of, providing a source which produces at least a stream of cooling gas under pressure, directing said at least a stream of cooling gas at said lamp envelope, and providing relative rotative motion between said lamp envelope and said source, wherein said relative rotative motion comprises rotating said source about said envelope incompletely in one direction and then incompletely in the opposite direction so that said source oscillates about a given position.
Claim 5
Dependent Claim
17 words
The method of claim 1 or 2 wherein said electrodeless lamp comprises a microwave generated plasma lamp.
Claim 6
Independent Claim
66 words
An apparatus for cooling an electrodeless lamp having a lamp envelope which gets extremely hot during operation comprising, source means for providing at least a stream of cooling gas under pressure said source means including conduit means for directing said at least a stream of cooling gas at said lamp envelope, and means for providing relative rotative motion between said lamp envelope and said conduit means.
Claim 7
Independent Claim
66 words
An apparatus for cooling an electrodeless lamp having a lamp envelope which gets extremely hot during operation comprising, source means for providing at least a stream of cooling gas under pressure said source means including conduit means for directing said at least a stream of cooling gas at said lamp envelope, and means for providing relative rotative motion between said lamp envelope and said conduit means.
Claim 8
Dependent Claim
24 words
The apparatus of claim 4 wherein said means for providing relative rotative motion comprises, means for rotating said conduit means completely about said envelope.
Claim 9
Dependent Claim
41 words
The apparatus of claim 4 wherein said means for providing relative rotative motion comprises means for rotating said conduit mwans incompletely in one direction and then incompletely in the opposite direction so that said conduit means oscillates about a given position.
Claim 10
Dependent Claim
29 words
The apparatus of claim 4 wherein said means for providing said relative rotative motion comprises means for providing rotative motion to both said lamp envelope and said conduit means.
Claim 11
Dependent Claim
26 words
The apparatus of claim 4 wherein said means for providing relative rotative motion includes rotating seal means comprised of a stationary part and a movable part.
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) | 1990-09-21 | 1991-03-23 | 1991-09-22 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1994-09-21 | 1995-03-23 | 1995-09-22 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1998-09-21 | 1999-03-23 | 1999-09-22 | $7700.00 | Window Closed / Lapsed |