Title:
FLOW RATE CONTROL DEVICE FOR BREATHING APPARATUS
Document Type and Number:
WIPO Patent Application WO/2023/080439
Kind Code:
A1
Abstract:
A flow rate control device for a breathing apparatus according to the present invention is provided in a mask main body to be worn on the user's face to control air flow rate, the flow rate control device comprising: a housing having a housing chamber connected to an inner region of the mask main body, an inflow passage through which air is introduced, and an orifice for connecting the inflow passage and the housing chamber; a valve stem having a stem head disposed in the inflow passage to be able to open and close the orifice, and a stem body extending from the stem head such that at least a portion thereof is located in the housing chamber; a movable unit having a diaphragm that can be elastically deformed according to a pressure change in the housing chamber due to the user's inhalation or exhalation, the movable unit being capable of tilting the valve stem by pressing the stem body according to the movement of the diaphragm; and a valve stem support that supports the valve stem in a tiltable manner.
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Inventors:
KIM YOUNG SOO (KR)
KIM BYUNG CHUL (KR)
KIM BYUNG CHUL (KR)
Application Number:
PCT/KR2022/014064
Publication Date:
May 11, 2023
Filing Date:
September 21, 2022
Export Citation:
Assignee:
K DEFENSE CO LTD (KR)
International Classes:
A62B9/02; A62B7/00; F16K7/12; F16K17/04
Foreign References:
| KR20200129410A | 2020-11-18 | |||
| US2821990A | 1958-02-04 | |||
| CN203677780U | 2014-07-02 | |||
| US3467137A | 1969-09-16 | |||
| CN212327145U | 2021-01-12 | |||
| KR20210056684A | 2021-05-20 | |||
| KR102402674B1 | 2022-05-30 |
Attorney, Agent or Firm:
SEO, Jae Sung (KR)
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