Title:
IMPROVED ACCESSORY OF MASK AND FILTER TESTING METHOD
Document Type and Number:
WIPO Patent Application WO/2024/082783
Kind Code:
A1
Abstract:
Provided in the present invention are an improved accessory of a mask and a filter testing method. The improved accessory comprises: a base member, a side edge thereof being provided with an external thread for threaded connection with a pivoting member in a matched manner, allowing the base member to be fixed to a positioning through hole of a mask; an assembly, a side edge thereof being provided with an external thread, a support extending inside the external thread, a protruding pull being arranged on the support, the lower portion of the support being capable of connecting to the pivoting member, the protruding pull allowing a check valve piece to be inserted and fixed, and a filter being stacked on an upper side of the check valve piece; and a limiting cover, the inner side thereof being provided with an internal thread capable of correspondingly engaging with the external thread of the assembly for screwed connection. By improving the size ratio of the check valve piece to the filter, and in conjunction with a lower opening of the support and an upper opening of the limiting cover, the improved accessory makes breathing smoother; when the filter is arranged on a mask to cooperate with the mouth and the nose for breathing, specimens can be effectively collected; and then, by means of testing the filter in detail, the types of pathogens can be determined, so as to formulate corresponding measures.
Inventors:
CHANG CHIEN-HSING (CN)
Application Number:
PCT/CN2023/111960
Publication Date:
April 25, 2024
Filing Date:
August 09, 2023
Export Citation:
Assignee:
CHANG CHIEN HSING (CN)
International Classes:
A41D13/11; A41D27/00; A62B23/00
Foreign References:
| CN115530465A | 2022-12-30 | |||
| CN219628907U | 2023-09-05 | |||
| CN216571279U | 2022-05-24 | |||
| CN211881700U | 2020-11-10 | |||
| CN111346313A | 2020-06-30 | |||
| CN212574210U | 2021-02-23 | |||
| CN215534563U | 2022-01-18 | |||
| EP0109514A1 | 1984-05-30 |
Attorney, Agent or Firm:
PACIFIC CHINA INTELLECTUAL PROPERTY CO., LTD. (CN)
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