Fiber reinforced plastic members

Details Fiber reinforced plastic members Fiber reinforced plastic members

1977-08-12

1981-08-11

Dixon, Jr., William R.

Stock material or miscellaneous articles

Hollow or container type article

Polymer or resin containing

428222, 428371, 428376, 428377, 428378, D03D 1300, D02G 300

Patent

active

042834465

ABSTRACT:
The present invention relates to FRP members, the apparatus and process for making same. The FRP members are reinforced with helical strands of reinforcing material disposed in expanded helices of opposite hand, the helices of each hand being contained in discrete layers. The lead angle of each helix may be constant or varied along the length of the member independently of whether the member is cylindrical or tapered in order to provide the desired structural characteristics. The process comprises impregnating the reinforcing strands with resin and wrapping those strands onto a mandrel by apparatus in which relative rotational as well as relative translatory movement between the mandrel and a winding head may be effected to wrap the strands onto the mandrel. At least one relative movement may be selectively varied to effect the desired lead angle to the helically disposed reinforcing strands along the length of the mandrel.

REFERENCES:
patent: 2843153 (1958-07-01), Young
patent: 3429758 (1969-02-01), Young
patent: 3574104 (1971-04-01), Medler
patent: 3969557 (1976-07-01), Jenks
patent: 3998458 (1976-12-01), Inoue et al.

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