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(12) Patent Application: | (11) CA 2164711 |
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(54) English Title: | A PHOSPHOR COATING ARRANGEMENT FOR AN ELECTRODELESS DISCHARGE LAMP |
(54) French Title: | COUCHE DE PHOSPHORE POUR LAMPE A DECHARGE SANS ELECTRODE |
Status: | Deemed Abandoned and Beyond the Period of Reinstatement - Pending Response to Notice of Disregarded Communication |
(51) International Patent Classification (IPC): |
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(72) Inventors : |
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(73) Owners : |
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(71) Applicants : |
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(74) Agent: | CRAIG WILSON AND COMPANY |
(74) Associate agent: | |
(45) Issued: | |
(86) PCT Filing Date: | 1995-04-06 |
(87) Open to Public Inspection: | 1995-10-19 |
Examination requested: | 2002-03-28 |
Availability of licence: | N/A |
Dedicated to the Public: | N/A |
(25) Language of filing: | English |
Patent Cooperation Treaty (PCT): | Yes |
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(86) PCT Filing Number: | PCT/GB1995/000799 |
(87) International Publication Number: | GB1995000799 |
(85) National Entry: | 1995-12-07 |
(30) Application Priority Data: | ||||||
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An electrodeless discharge lamp (10) having a lamp envelope (12)
containing a fill of mercury and a rare gas is excitable to a discharge state
by introduction of RF energy in close proximity thereto. A ballast circuit
contained within the housing base portion (22) of the lamp is effective
for generating the RF energy from conventional line power. The ballast
circuit includes a core portion which extends within a re-entrant cavity
(16) formed within the lamp envelope. During operation of the lamp,
the re-entrant cavity portion is exposed to higher wall loading conditions
than is the outer surface of the lamp envelope. These higher wall loading
conditions require the use of comparatively more expensive rare earth
phosphors (30) at the re-entrant cavity portion than are needed on the
outer portion of the lamp envelope where it would be appropriate to
utilize conventional halophosphate materials (32). In order to provide
for two distinct phosphor coating materials in a single lamp envelope
configuration and at a reasonable cost, such phosphor coating is done
by coating the re-entrant cavity and the outer portion separately and then
joining these components together to produce the finished lamp envelope.
The juncture point between the re-entrant portion and the outer envelope
portion resides under an upper rim portion of the housing and is therefore
not visible in the end lamp product.
L'invention concerne une lampe à décharge (10) sans électrode constituée d'une enveloppe (12) contenant du mercure et un gaz rare et pouvant être excitée jusqu'à atteindre la décharge par application d'énergie HF. Un circuit de protection situé à l'intérieur de la base du boîtier (22) de la lampe est destiné à produire de l'énergie HF à partir d'une source d'alimentation classique. Le circuit de protection comprend une partie formant noyau traversant une cavité rentrante (16) formée à l'intérieur de l'enveloppe. Lors du fonctionnement de la lampe, la cavité rentrante est exposée à des conditions de charge plus fortes au niveau de ses parois qu'à la surface externe de l'enveloppe. Ces conditions de charge supérieures des parois nécessitent l'utilisation de phosphores (30) de terres rares de coût comparativement plus élevé au niveau de la cavité rentrante que sur la partie externe de l'enveloppe, là où il conviendrait d'utiliser des matériaux halophosphates classiques (32). Afin d'obtenir deux couches de phosphore différentes sur une enveloppe unique à un coût raisonnable, on effectue séparément le dépôt de la couche de phosphore sur la cavité rentrante et sur la partie externe, puis on les assemble afin d'obtenir l'enveloppe finie. Le point de jonction entre la partie rentrante et l'enveloppe externe se situe sous une partie du bord supérieur du culot de la lampe et n'est donc pas visible sur le produit fini.
Note: Claims are shown in the official language in which they were submitted.
Note: Descriptions are shown in the official language in which they were submitted.
2024-08-01:As part of the Next Generation Patents (NGP) transition, the Canadian Patents Database (CPD) now contains a more detailed Event History, which replicates the Event Log of our new back-office solution.
Please note that "Inactive:" events refers to events no longer in use in our new back-office solution.
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Description | Date |
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Inactive: IPC from MCD | 2006-03-12 |
Application Not Reinstated by Deadline | 2004-04-06 |
Time Limit for Reversal Expired | 2004-04-06 |
Deemed Abandoned - Failure to Respond to Maintenance Fee Notice | 2003-04-07 |
Inactive: Status info is complete as of Log entry date | 2002-04-25 |
Inactive: Application prosecuted on TS as of Log entry date | 2002-04-25 |
Letter Sent | 2002-04-25 |
Request for Examination Requirements Determined Compliant | 2002-03-28 |
Amendment Received - Voluntary Amendment | 2002-03-28 |
All Requirements for Examination Determined Compliant | 2002-03-28 |
Application Published (Open to Public Inspection) | 1995-10-19 |
Abandonment Date | Reason | Reinstatement Date |
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2003-04-07 |
The last payment was received on 2002-03-28
Note : If the full payment has not been received on or before the date indicated, a further fee may be required which may be one of the following
Patent fees are adjusted on the 1st of January every year. The amounts above are the current amounts if received by December 31 of the current year.
Please refer to the CIPO
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web page to see all current fee amounts.
Fee Type | Anniversary Year | Due Date | Paid Date |
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MF (application, 3rd anniv.) - standard | 03 | 1998-04-06 | 1998-03-19 |
MF (application, 4th anniv.) - standard | 04 | 1999-04-06 | 1999-03-18 |
MF (application, 5th anniv.) - standard | 05 | 2000-04-06 | 2000-03-23 |
MF (application, 6th anniv.) - standard | 06 | 2001-04-06 | 2001-03-22 |
MF (application, 7th anniv.) - standard | 07 | 2002-04-08 | 2002-03-28 |
Request for examination - standard | 2002-03-28 |
Note: Records showing the ownership history in alphabetical order.
Current Owners on Record |
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GE LIGHTING LIMITED |
Past Owners on Record |
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ANDREW TERRENCE ROWLEY |