Vehicle fenders – Buffer or bumper type – Composite bumper
Patent
1991-09-03
1993-01-12
Pedder, Dennis H.
Vehicle fenders
Buffer or bumper type
Composite bumper
293121, 293155, B60R 1904
Patent
active
051784254
ABSTRACT:
An automobile bumper comprises a bumper face and a bumper beam constructed of members molded of thermoplastic resin. The bumper beam includes at least two members of thermoplastic resin having flanges for forming beam flanges together when the members are fused to each other, the beam flanges being fused to an inner surface of the bumper face. An FRP sheet is continuously heated in an atmosphere having a temperature successively lowered from a temperature higher than a resin melting temperature at which a resin of the FRP sheet is melted so that the entire FRP sheet is increased through successive heating stages to a temperature between the resin melting temperature and a resin degradation temperature at which the resin of the FRP sheet is degraded. Heaters are brought into close proximity with joining surfaces to be fused of at least two parts of synthetic resin with a prescribed spacing therebetween for melting the joining surfaces, and thereafter the melted joining surfaces are pressed against each other to fuse the parts together. At least one of the at least two parts comprises an FRP product made of glass fibers reinforced with a thermoplastic resin, the joining surfaces of the FRP product having a plurality of projections containing the thermoplastic resin only, the projections being melted when the parts are fused together.
REFERENCES:
patent: 2554150 (1951-05-01), Moore
patent: 2665738 (1954-01-01), Caskin
patent: 3175939 (1965-03-01), Hanes et al.
patent: 3891258 (1975-06-01), Bargiyi
patent: 4652032 (1987-03-01), Smith
patent: 4762352 (1988-08-01), Enomoto
Ishige Yoshiki
Ishihara Tuneo
Kishino Kunio
Kumagai Syuno
Masuda Hisashi
Honda Giken Kogyo Kabushiki Kaisha
Pedder Dennis H.
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