DUAL ROLL BLIND

WIPO Patent Application WO/2012/011666

A2

The present invention relates to a dual roll blind enabling to control its light transmission amount and open and close with one ball-chain. The dual roll blind comprises a first screen and a second screen having light transmission portions and light shielding portions, respectively, a first winding bar and a second winding bar for respectively winding the firstscreen and the second screen, a first axis of rotation and a second axis of rotation to which the first winding bar and the second winding bar are respectively coupled, a first gear coupled to the first axis of rotation and rotationally driving the first winding bar, a second gear coupled to the second axis of rotation and rotating the second winding bar with rotating dependently on the first gear, a driving wheel rotating by a driving string and coupled to the first axis of rotation to transfer rotational force of the driving string to the first gear and the winding bar, a slide drive device engaging with the driving wheel to receive rotational force of the driving wheel and slide the first winding bar in a longitudinal direction of the first axis of rotation.

JANG, Seong-ryong (102-803, POSCO The Sharp APT Daechi-dong 902, Gangnam-gu, Seoul 135-841, KR)

KR2011/004352

January 26, 2012

June 14, 2011

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WINTEC KOREA INC. (366-71, Chuja Ri Opo Eup, Gwangju Si, Gyeonggi Do 464-909, KR)
JANG, Seong-ryong (102-803, POSCO The Sharp APT Daechi-dong 902, Gangnam-gu, Seoul 135-841, KR)

E06B9/40; E06B9/68

LEE, Seung-youl et al. (GOOD IDEA International Patent Office, 203-210 Bucheon Technopark SSangyoung 3rdSamjeong-dong 36-1, Ojeong-gu, Bucheon-si, Gyeonggi-do 421-742, KR)

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