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Patent Searching and Data


Title:
LIFESAVING CUTTER
Document Type and Number:
Japanese Patent JPH11129113
Kind Code:
A
Abstract:

To provide a lifesaving cutter with a reduced total weight, without marring the wear resistance of cutting edges, a frame and a cylinder.

Cutting edges 39a, 39b are formed with a titanium alloy base metal 49 and a steel brazed to the base metal 49 with silver brazing. A frame 3 is formed of aluminum alloy and surface hardening treatment is given near a bolt hole 23 at the end thereof with plasma powder buildup. The powder contains aluminum and copper element to form intermetallic compound. A cylinder 11 is formed with an aluminum alloy base material layer and a surface treatment layer on the inner periphery of the base material layer. The surface treatment layer is formed by using nickel-phosphorus composite platings with high hardness and good adhesivity.


Inventors:
GOTO KOJI
TOMITA YUKI
NAGAMOTO MASAYOSHI
NISHIRA MASAYOSHI
Application Number:
JP29821397A
Publication Date:
May 18, 1999
Filing Date:
October 30, 1997
Export Citation:
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Assignee:
HYOGO PREFECTURE
International Classes:
B26D1/00; B23D29/00; (IPC1-7): B23D29/00
Attorney, Agent or Firm:
Yoshihiro Tsunoda