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Title:
A DOUBLE IMPACT HAMMER
Document Type and Number:
WIPO Patent Application WO/2008/049325
Kind Code:
A1
Abstract:
A double impact hammer comprises a hammer head (A1-A12) and a hammer handle (D1-D12). The hammer head contains a sealed and movable block (B1-B12). It has many advantages, such as improved hammering effect, being more accurate, reduced or eliminated vibration resulted from counteraction, simple structure, same shape with the ordinary hammer after resetting of the block. It can be used for striking tools like hack, handle axe, axe, tennis racket, golf pole, and so on.

Inventors:
CORONA, Franco, Dante, Ettore (Suite 2B, No.95 Lane 710,Dingxi Road, Shanghai 2, 200052, CN)
Application Number:
CN2007/002993
Publication Date:
May 02, 2008
Filing Date:
October 19, 2007
Export Citation:
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Assignee:
YI, Jae Hyung (Suite 2B, No.95 Lane 710,Dingxi Road, Shanghai 2, 200052, CN)
李载兄 (中国上海市定西路710弄95号2层B, Shanghai 2, 200052, CN)
International Classes:
B25D1/02; A01B1/06; A63B9/00; B26B23/00
Foreign References:
US4831901A
CN2049175U
US4697481A
JP2005199408A
GB1238652A
DE2757316B1
CH584093A5
Attorney, Agent or Firm:
SHANGHAI EAST ASIA PATENT & TRADEMARK AGENCY CO., LTD. (Dong Mei, 4F/A No.3, Lane 672 Changle Road Shanghai 0, 200040, CN)
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