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(12) Patent: | (11) CA 2417551 |
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(54) English Title: | COMBUSTION CHAMBER SHIELD FOR HOT WATER HEATERS |
(54) French Title: | PLAQUE DE PROTECTION DE CHAMBRE DE COMBUSTION POUR CHAUFFE-EAU |
Status: | Expired and beyond the Period of Reversal |
(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: | |
(74) Associate agent: | |
(45) Issued: | 2007-07-24 |
(22) Filed Date: | 2003-01-28 |
(41) Open to Public Inspection: | 2004-07-28 |
Examination requested: | 2004-06-28 |
Availability of licence: | N/A |
Dedicated to the Public: | N/A |
(25) Language of filing: | English |
Patent Cooperation Treaty (PCT): | No |
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(30) Application Priority Data: | None |
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A shield for a combustion chamber of a hot water heater is described. The combustion chamber is a sealed or not combustion chamber and the metal heat shield encircles and is spaced about the burner and pilot which is located in the combustion chamber. The shield is also spaced from the skirt and a bottom wall of the combustion chamber. The shield is further provided with apertures to permit passage of air supplied by an air supply duct. The shield provides for heat concentration on a lower heat transfer wall of the inner casing containing the water to be heated. The shield also reduces heat loss through the skirt and the bottom end wall of the combustion housing.
Description d'une plaque de protection pour chambre de combustion pour chauffe-eau. La chambre de combustion est une chambre scellée ou sans combustion, et la plaque de protection en métal l'enveloppe et est séparée du brûleur et de la veilleuse, qui se trouvent dans la chambre de combustion. La plaque de protection est également séparée de la jupe et de la paroi inférieure de la chambre de combustion. La plaque de protection comporte en outre des orifices pour permettre le passage de l'air dans un conduit d'aération. La plaque de protection concentre la chaleur sur une paroi de transfert de chaleur inférieure de l'enveloppe inférieure contenant l'eau à chauffer. Elle réduit aussi la perte de chaleur par la jupe et la paroi inférieure de la chambre de combustion.
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.
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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 expired | 2022-01-01 |
Inactive: IPC expired | 2022-01-01 |
Inactive: IPC expired | 2022-01-01 |
Revocation of Agent Requirements Determined Compliant | 2021-04-01 |
Time Limit for Reversal Expired | 2020-01-28 |
Common Representative Appointed | 2019-10-30 |
Common Representative Appointed | 2019-10-30 |
Letter Sent | 2019-01-28 |
Inactive: Office letter | 2014-04-25 |
Inactive: Office letter | 2014-04-25 |
Revocation of Agent Request | 2014-04-04 |
Letter Sent | 2008-06-11 |
Inactive: Single transfer | 2008-04-09 |
Grant by Issuance | 2007-07-24 |
Inactive: Cover page published | 2007-07-23 |
Pre-grant | 2007-05-09 |
Inactive: Final fee received | 2007-05-09 |
Notice of Allowance is Issued | 2007-03-13 |
Letter Sent | 2007-03-13 |
Notice of Allowance is Issued | 2007-03-13 |
Inactive: Approved for allowance (AFA) | 2007-02-02 |
Amendment Received - Voluntary Amendment | 2006-09-20 |
Inactive: S.30(2) Rules - Examiner requisition | 2006-07-24 |
Inactive: IPC from MCD | 2006-03-12 |
Inactive: IPC from MCD | 2006-03-12 |
Letter Sent | 2005-06-01 |
Inactive: Single transfer | 2005-05-09 |
Letter Sent | 2005-05-09 |
Letter Sent | 2005-03-01 |
Reinstatement Requirements Deemed Compliant for All Abandonment Reasons | 2005-02-02 |
Deemed Abandoned - Failure to Respond to Maintenance Fee Notice | 2005-01-28 |
Letter Sent | 2004-08-09 |
Application Published (Open to Public Inspection) | 2004-07-28 |
Inactive: Cover page published | 2004-07-27 |
Request for Examination Received | 2004-06-28 |
Request for Examination Requirements Determined Compliant | 2004-06-28 |
All Requirements for Examination Determined Compliant | 2004-06-28 |
Amendment Received - Voluntary Amendment | 2004-06-28 |
Inactive: Office letter | 2004-02-27 |
Inactive: First IPC assigned | 2003-03-18 |
Inactive: IPC assigned | 2003-03-18 |
Inactive: Filing certificate - No RFE (English) | 2003-03-04 |
Inactive: Filing certificate - No RFE (English) | 2003-02-27 |
Letter Sent | 2003-02-27 |
Application Received - Regular National | 2003-02-27 |
Abandonment Date | Reason | Reinstatement Date |
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2005-01-28 |
The last payment was received on 2007-01-04
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
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Note: Records showing the ownership history in alphabetical order.
Current Owners on Record |
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MICLAU - S.R.I. |
Past Owners on Record |
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CLAUDE LESAGE |