Title:
衝撃緩衝材及びその製造方法並びに衝撃緩衝材用の充填材
Document Type and Number:
Japanese Patent JP3992885
Kind Code:
B2
Abstract:
An object of the invention is to provide a shock absorber which can reduce damage to the member to collide therewith. The invention provides a shock absorber comprising a cushion structure of three-dimensional spring construction, which has a large void provided by a random curl or loop formed by hot extruding a thermoplastic resin to form a continuous strip and curling or looping the strip in a molten state to bring adjoining strip sections into interlocking contact with each other. In the invention, the cushion structure may be obtained by stacking a plurality of cushion structure members, each having high cushion performance and buckling resistance and a certain thickness, one upon another parallel in a thickness direction or rolling up one side of a cushion member with a given thickness. Then, the cushion structure is embedded in a foamed and hardened filler containing a hydratable, hydraulic binder while a part of the cushion structure is exposed on an shock-receiving surface.
Inventors:
Sadao Nishibori
Hideji Inui
Hideji Inui
Application Number:
JP20184799A
Publication Date:
October 17, 2007
Filing Date:
July 15, 1999
Export Citation:
Assignee:
C-ENG Co., Ltd.
East Japan Expressway Co., Ltd.
Central Japan Expressway Co., Ltd.
West Japan Expressway Co., Ltd.
East Japan Expressway Co., Ltd.
Central Japan Expressway Co., Ltd.
West Japan Expressway Co., Ltd.
International Classes:
F16F7/00; F16F7/12; D04H3/016; D04H3/07; D04H3/147; D04H3/153; E01F15/14; F16F1/02; F16F1/362
Domestic Patent References:
| JP49036913B1 | ||||
| JP8061414A | ||||
| JP9328349A | ||||
| JP4295076A | ||||
| JP10292330A | ||||
| JP2548477B2 |
Attorney, Agent or Firm:
Masaaki Ogura
Takahiro Ozaki
Takahiro Ozaki