Title:
METHOD OF TESTING AIR LEAKAGE
Document Type and Number:
WIPO Patent Application WO/2023/065322
Kind Code:
A1
Abstract:
A method of quality testing an airflow path defined in a product is provided. The product comprises a plurality of component parts joined together to form the product, each part defining a portion of the airflow path. The method comprises steps of pressurising the airflow path to a predetermined pressure, measuring leakage from the pressurised airflow path for a predetermined period of time, determining a leakage rate over the predetermined period of time, and determining whether the leakage rate is greater than a permissible threshold leakage rate.
Inventors:
AW SZE CHIEK (SG)
YEO CHOW KIAN (SG)
YEO CHOW KIAN (SG)
Application Number:
PCT/CN2021/125787
Publication Date:
April 27, 2023
Filing Date:
October 22, 2021
Export Citation:
Assignee:
PHILIP MORRIS PRODUCTS SA (CH)
International Classes:
G01M3/26; A24F40/00; A61M11/00
Domestic Patent References:
| WO2020115322A1 | 2020-06-11 |
Foreign References:
| EP3738456A1 | 2020-11-18 | |||
| US20200154588A1 | 2020-05-14 | |||
| US20110058986A1 | 2011-03-10 | |||
| US5438862A | 1995-08-08 | |||
| US20110247398A1 | 2011-10-13 | |||
| US20140060554A1 | 2014-03-06 |
Attorney, Agent or Firm:
CCPIT PATENT AND TRADEMARK LAW OFFICE (CN)
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