Title:
A CYLINDRICAL SECURITY DOOR
Document Type and Number:
WIPO Patent Application WO/2002/052118
Kind Code:
A1
Abstract:
A cylindrical security door which revolving between the left and the right cambered doorcase (3, 4) is hollow columniform without upper and lower surface. On the side face of the cylindrical door (1) there is a rectangular opening (2) with the radian less than 90°, the ratchet wheels (9, 10) and the control wheels (11, 12, 13) are mounted on the upper end of the cylindrical door (1) and the worm wheels (7) and the worms (8) are mounted on the lower end, the circuit control device is mounted on the doorcase and the catch tools are mounted on both of the upper and the lower doorcases.
Inventors:
ZHU WEI-ZHENG (CN)
Application Number:
PCT/CN2001/001515
Publication Date:
July 04, 2002
Filing Date:
October 30, 2001
Export Citation:
Assignee:
ZHU WEI-ZHENG (CN)
International Classes:
E05G5/00; E05G5/02; E06B3/90; E05F15/10; E05F15/12; (IPC1-7): E06B3/90
Foreign References:
| JPH04247186A | 1992-09-03 | |||
| US5542211A | 1996-08-06 | |||
| CN2144699Y | 1993-10-27 | |||
| US4565030A | 1986-01-21 | |||
| CN2270106Y | 1997-12-10 | |||
| DE3730031A1 | 1989-03-16 | |||
| JPS6468265A | 1989-03-14 |
Attorney, Agent or Firm:
KANGXIN & PARTNERS (Block B Tongtai Mansio, Xicheng District Beijing 2, CN)
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