Abstract: A centrifugal fan (1) is provided with a main plate (10) a shroud (20) and a plurality of blades (30) disposed between the main plate (10) and the shroud (20) the blades (30) having contact surfaces (34 35a 35b) that come into contact with contacted surfaces (12a 22a etc.) formed on the main plate (10) and/or the shroud (20) protuberances (36 37a 37b) that extend linearly or curvedly being formed in the contact surfaces (34 35a 35b) and the contact surfaces (34 35a 35b) and the contacted surfaces (12a 22a etc.) being welded to each other by laser beams (40 41) that are radiated onto the protuberances (36 37a 37b) and scanned along the protuberances (36 37a 37b).
SOFT COPY ATTACHED IN PDF
| # | Name | Date |
|---|---|---|
| 1 | Power of Attorney [30-12-2015(online)].pdf | 2015-12-30 |
| 2 | Form 5 [30-12-2015(online)].pdf | 2015-12-30 |
| 3 | Form 3 [30-12-2015(online)].pdf | 2015-12-30 |
| 4 | Form 18 [30-12-2015(online)].pdf | 2015-12-30 |
| 5 | Form 1 [30-12-2015(online)].pdf | 2015-12-30 |
| 6 | Drawing [30-12-2015(online)].pdf | 2015-12-30 |
| 7 | Description(Complete) [30-12-2015(online)].pdf | 2015-12-30 |
| 8 | 8057-CHENP-2015.pdf | 2016-01-01 |
| 9 | Form 3 [25-05-2016(online)].pdf | 2016-05-25 |
| 10 | 8057-CHENP-2015-Form 1-290116.pdf | 2016-06-28 |
| 11 | 8057-CHENP-2015-Correspondence-Form 1-290116.pdf | 2016-06-28 |
| 12 | 8057-CHENP-2015-FORM 3 [28-11-2018(online)].pdf | 2018-11-28 |
| 13 | 8057-CHENP-2015-FER.pdf | 2019-02-15 |
| 14 | 8057-CHENP-2015-OTHERS [31-07-2019(online)].pdf | 2019-07-31 |
| 15 | 8057-CHENP-2015-Information under section 8(2) (MANDATORY) [31-07-2019(online)].pdf | 2019-07-31 |
| 16 | 8057-CHENP-2015-FORM 3 [31-07-2019(online)].pdf | 2019-07-31 |
| 17 | 8057-CHENP-2015-FER_SER_REPLY [31-07-2019(online)].pdf | 2019-07-31 |
| 18 | 8057-CHENP-2015-DRAWING [31-07-2019(online)].pdf | 2019-07-31 |
| 19 | 8057-CHENP-2015-COMPLETE SPECIFICATION [31-07-2019(online)].pdf | 2019-07-31 |
| 20 | 8057-CHENP-2015-CLAIMS [31-07-2019(online)].pdf | 2019-07-31 |
| 21 | 8057-CHENP-2015-certified copy of translation (MANDATORY) [31-07-2019(online)].pdf | 2019-07-31 |
| 22 | 8057-CHENP-2015-ABSTRACT [31-07-2019(online)].pdf | 2019-07-31 |
| 23 | 8057-CHENP-2015_Marked up Claims_Granted 325839_26-11-2019.pdf | 2019-11-26 |
| 24 | 8057-CHENP-2015_Drawings_Granted 325839_26-11-2019.pdf | 2019-11-26 |
| 25 | 8057-CHENP-2015_Description_Granted 325839_26-11-2019.pdf | 2019-11-26 |
| 26 | 8057-CHENP-2015_Claims_Granted 325839_26-11-2019.pdf | 2019-11-26 |
| 27 | 8057-CHENP-2015_Abstract_Granted 325839_26-11-2019.pdf | 2019-11-26 |
| 28 | 8057-CHENP-2015-PatentCertificate26-11-2019.pdf | 2019-11-26 |
| 29 | 8057-CHENP-2015-IntimationOfGrant26-11-2019.pdf | 2019-11-26 |
| 30 | 8057-CHENP-2015-RELEVANT DOCUMENTS [11-03-2020(online)].pdf | 2020-03-11 |
| 31 | 8057-CHENP-2015-RELEVANT DOCUMENTS [09-08-2021(online)].pdf | 2021-08-09 |
| 32 | 8057-CHENP-2015-RELEVANT DOCUMENTS [15-09-2022(online)].pdf | 2022-09-15 |
| 33 | 8057-CHENP-2015-RELEVANT DOCUMENTS [20-09-2023(online)].pdf | 2023-09-20 |
| 1 | 2018-11-29_29-11-2018.pdf |