Title:
PAIR OF SAW BLADES WITH BLADE LOKING PREVENTING FUNCTION
Document Type and Number:
WIPO Patent Application WO/2009/094830
Kind Code:
A1
Abstract:
Pair of saw blades with blade locking preventing function comprise a first blade
(1) which rotates about an axis,and a second blade (7) which rotates about the
same axis reversely, each blade has a blade body and cutting elements (2,8) which
are provided along the periphery of the blade body, the cutting elements (2,8)
have main cutting surfaces or lines (5,6) on the external edge,and the blades
(1,7) run close and parallel to each other when rotated, the cutting elements
(2,8) of at least one of the blades have aided cutting surfaces or lines which match
another blade cutting elements and /or blade body in the inner side.Aided cutting
surfaces or lines in the blades make the cutting fragment drop into the space between
the two blades to be cut further, to be formed into fine powder, and to be thrown
off by acentric force rapidly.
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Inventors:
GUO YIWEN (CN)
Application Number:
PCT/CN2008/002043
Publication Date:
August 06, 2009
Filing Date:
December 22, 2008
Export Citation:
Assignee:
GUO YIWEN (CN)
International Classes:
B23D45/10
Foreign References:
| US20030000363A1 | 2003-01-02 | |||
| US20040182217A1 | 2004-09-23 | |||
| US6305259B1 | 2001-10-23 |
Attorney, Agent or Firm:
ZHEJIANG HANGZHOU JINTONG PATENT AGENCY CO. LTD (Xiaojing19F, Kexie Building,No.47 Huancheng North Road,Hangzhou, Zhejiang 3, CN)
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