Title:
ROTATION SHAFT, ROTATION BLADE UNIT HAVING THE SHAFT AND PARTS FOR MAKING THE UNIT
Document Type and Number:
WIPO Patent Application WO/2015/080406
Kind Code:
A1
Abstract:
A rotation shaft is provided, which is made by assembling divided shafts and still has large torsional strength. The rotation shaft includes a plurality of divided shafts provided with a spiral portion having a spiral shape and a core-groove forming portion disposed along inner surface, engaging with one another so as to form a spiral-engaging portion by the spiral portion and a core-groove disposed along the central portion of the rotation shaft by the plurality of core-groove forming portion, and a rotation-preventing core engaging the core-groove and preventing the plurality of spiral portions from relative rotating around the central portion mutually.
Inventors:
MIEREMET MARINUS (NL)
BAEK JOON-HO (KR)
BAEK JOON-HO (KR)
Application Number:
PCT/KR2014/010870
Publication Date:
June 04, 2015
Filing Date:
November 12, 2014
Export Citation:
Assignee:
CHO YEOUNGCHEOL (KR)
ARCHIMEDES B V (NL)
ARCHIMEDES B V (NL)
International Classes:
F03D1/06; F03D3/06; F03D11/00
Domestic Patent References:
| WO2012009482A2 | 2012-01-19 |
Foreign References:
| KR101411827B1 | 2014-06-24 | |||
| KR101286380B1 | 2013-07-15 | |||
| KR20120091462A | 2012-08-17 |
Attorney, Agent or Firm:
PARK, HeeJin (559 Nonhyeon-ro,,Gangnam-gu, Seoul 135-907, KR)
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