Title:
MANUFACTURE OF HAMMER AND HAMMER PROVIDED WITH ROTARY TOOL
Document Type and Number:
Japanese Patent JP3023475
Kind Code:
B2
Abstract:
PROBLEM TO BE SOLVED: To prevent a backlash between a hammering body and a gripping stem or coming off of the hammering body in repeated use by performing synthetic resin coating by insert molding in production of a hammer in which the outside of a core member is covered with synthetic resin.
SOLUTION: In production of a hammer 9 in which the outsides of the core members 1, 2 are covered by synthetic resin, coating by synthetic resin is carried out by insert molding. A metallic hammering core member 2 is fixed orthogonally in a metallic gripping stem core material 1, a core body is formed by fitting a hammering part 3 made of synthetic resin or metal on the hammering core member 2, and then, the core body is coated with synthetic resin by insert molding. Alternatively, the core body is formed by fixing a metallic hammering body 12 orthogonally in the metallic gripping stem core material 1, and then, the core body is coated by synthetic resin by insert molding. A space 5 is formed in a base end of a gripping stem 4 in the hammer 9, while a bit 6 of a rotary tool 7 is arranged inside the space 5, and the base end part of the hammer 9 is formed of a knob 8 in the rotary tool 7.
Inventors:
Koichi Kaneko
Application Number:
JP27654495A
Publication Date:
March 21, 2000
Filing Date:
September 30, 1995
Export Citation:
Assignee:
Kaneko Manufacturing Co., Ltd.
International Classes:
B25D1/02; B25D1/00; B25G1/08; (IPC1-7): B25D1/00; B25G1/08
Domestic Patent References:
| JP5828474A | ||||
| JP59148283U |
Attorney, Agent or Firm:
Tsuyoshi Yoshii (1 person outside)
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