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Patent Searching and Data


Title:
CORDLESS BLIND APPARATUS
Document Type and Number:
WIPO Patent Application WO/2018/093023
Kind Code:
A1
Abstract:
The present invention provides a cordless blind apparatus that can be conveniently operated without a cord. The cordless blind apparatus includes: a roller that is fitted on a rotary shaft; a screen that is wound or unwound on the roller; a weight that is connected to the lower end of the screen and applies torque in a first direction in which the screen is unwound from the roller by the gravity; an elastic member that applies torque in a second direction in which the screen is wound, by applying elastic force to the roller; and a friction stopper assembly that generates friction force on the roller.

Inventors:
JANG, Seong-ryong (102-803, POSCO The Sharp APTSamsungro 417,Gangnam-gu, Seoul, 06195, KR)
Application Number:
KR2017/009577
Publication Date:
May 24, 2018
Filing Date:
August 31, 2017
Export Citation:
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Assignee:
WINTEC KOREA INC. (206Opoan-ro Opo-eup, Gwangju-si, Gyeonggi-do, 12790, KR)
International Classes:
E06B9/42; E06B9/68
Foreign References:
KR20140065430A2014-05-29
KR930002730Y11993-05-19
KR200469335Y12013-10-04
KR101492020B12015-02-10
US20140048217A12014-02-20
Attorney, Agent or Firm:
LEE, Seung-youl et al. (GOOD IDEA International Patent Office #203-210, 397 Seokcheon-ro,Bucheon-si, Gyeonggi-do, 14449, KR)
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