MULTI-STAGE AIR-DIFFUSING DEVICE

WIPO Patent Application WO/2010/071376

A2

The multi-stage air-diffusing device of the present invention comprises: a bolt having a vent hole formed in the lengthwise direction; a plurality of disks, each of which has a bolt coupling portion for passage of said bolt; an air chamber for accommodating air supplied to the vent hole; a nozzle portion with air nozzles of a predetermined size arranged at regular intervals along the end of the air chamber; a lower surface relatively larger than the upper surface thereof; a tilted outer surface; and a backflow prevention unit having a check valve coupled to the end of the bolt to bring said disks into tight contact with each other, interconnect an air supply pipe and said vent hole, and prevent the backflow of air directed from the vent hole toward the air supply pipe.

KO MYUNG-HAN (KR)
KWON BYONG-CHEOL (KR)
PARK SUNG-HA (KR)
KO KYUNG-HAN (KR)
KIM SANG-WOO (KR)
LEE SEUNG-JIN (KR)
YANG JAE-KYUNG (KR)
BAEK KYOUNG-RYEOL (KR)
YOON DAE-HWAN (KR)
PARK KIL-HOO (KR)

PCT/KR2009/007580

June 24, 2010

December 17, 2009

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ANT21 CO LTD (KR)
KO MYUNG-HAN (KR)
KWON BYONG-CHEOL (KR)
PARK SUNG-HA (KR)
KO KYUNG-HAN (KR)
KIM SANG-WOO (KR)
LEE SEUNG-JIN (KR)
YANG JAE-KYUNG (KR)
BAEK KYOUNG-RYEOL (KR)
YOON DAE-HWAN (KR)
PARK KIL-HOO (KR)

C02F3/20; B01F3/04; C02F1/74; C02F7/00

KR200368391Y1	2004-11-20
KR200229182Y1
KR200400502Y1	2005-11-08
KR200375500Y1	2005-03-11

LEE, DONG HEE (KR)
이동희 (KR)

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