Title:
THE PUZZLE LOCK
Document Type and Number:
WIPO Patent Application WO/2004/063501
Kind Code:
A1
Abstract:
The mechanical thumbwheel puzzle lock is a kind improved mechanical puzzle lock and used in safe, file cabinet, safe door, warehouse door, etc. It is suited to people’s operation habit and has large cipher amount and cipher capable of being altered at will. The present invention include several ring cipher sheets, a base disc, a lock bolt, a bolt opening mechanism, a positioning mechanism, a dialing mechanism, a re-positioning mechanism, a code-finding mechanism, a casing and a dialing disc. The dialing mechanism has a frame, a dialing block and a controller. The frame is a cylinder in which a groove is disposed for accommodation of the dialing block and a protrusive tongue is disposed on the end of the cylinder. The controller comprises a sleeve, a ratchet and a control disc. The re-positioning mechanism has a re-positioning brush, a spring and a support. The code-finding mechanism comprises a controlling sheet, a position-limited protrusion, an axle and a spring. The controlling sheet is mounted to the base disc through the axle, the front end of the controlling sheet is connected with the outer edge of the ring cipher sheet.
Inventors:
SHAO ZHI JUN (CN)
Application Number:
PCT/CN2003/000946
Publication Date:
July 29, 2004
Filing Date:
November 10, 2003
Export Citation:
Assignee:
SHAO ZHI JUN (CN)
International Classes:
E05B37/00; E05B37/08; (IPC1-7): E05B37/20
Foreign References:
| CN2460677Y | 2001-11-21 | |||
| CN2389213Y | 2000-07-26 | |||
| CN1238418A | 1999-12-15 | |||
| US6378344B1 | 2002-04-30 |
Attorney, Agent or Firm:
CHINA TRADEMARK & PATENT LAW OFFICE CO., LTD. (Xichengqu Yuexin Bld, Beijing 5, CN)
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