Injection moulded plastics article

Details Injection moulded plastics article Injection moulded plastics article

1978-02-21

1979-02-20

Dixon, Jr., William R.

Stock material or miscellaneous articles

Structurally defined web or sheet

Including variation in thickness

428213, 428 64, 220 66, 220 72, B32B 328

Patent

active

041408284

ABSTRACT:
A novel rib lattice structure for a substantially flat surface in a thin-walled plastics article. The lattice structure comprises a network of ribs integral with a wall and consists of a plurality of trunk ribs radiating outward from a point of injection at equal angles to each other, said trunk ribs being supplemented with ribs branching out in opposing pairs at equal intervals along the trunk ribs, each branch rib from a trunk rib proceeding on a line parallel to the adjacent trunk rib on the same side and intersecting branched ribs from the said adjacent trunk rib whereby said trunk and branch ribs interact to form a plurality of discreet rhomboidal web segments, each web segment entirely bounded by ribs being of substantially uniform size and shape.

REFERENCES:
patent: 3360162 (1967-12-01), Miles
patent: 3608143 (1971-09-01), Schutz
patent: 3679119 (1972-07-01), Copping
patent: 3944124 (1976-03-01), Hexel

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