초록 ▼

The present invention provides a new and improved process of producing vehicle grille guards by gas-assisted injection molding and the grille guards produced thereby. The process includes injecting a plastic resin into a mold cavity in an amount less than the total volume of the mold cavity. An iner

The present invention provides a new and improved process of producing vehicle grille guards by gas-assisted injection molding and the grille guards produced thereby. The process includes injecting a plastic resin into a mold cavity in an amount less than the total volume of the mold cavity. An inert gas is then injected into a center portion of the cavity and a hollow gas channel extending throughout the center portion is formed, forcing the plastic resin to flow along an outer surface of the cavity.

대표청구항 ▼

[ What is claimed is:] [1.] A grill guard produced by gas-assisted injection molding, said grill guard comprising:a first bar having a first and second end;a second bar having a first and second end, said second bar being generally parallel to and spaced from said first bar;a third bar disposed gene

[ What is claimed is:] [1.] A grill guard produced by gas-assisted injection molding, said grill guard comprising:a first bar having a first and second end;a second bar having a first and second end, said second bar being generally parallel to and spaced from said first bar;a third bar disposed generally perpendicular to said first and second bars and extending between said first ends of said first and second bars; anda forth bar disposed generally perpendicular to said first and second bars and extending between said first and second bars at a position intermediate said first and second ends of each of said first and second bars, said fourth bar being formed as a hollow cylindrical member, said first, second, third and fourth bars forming said grill guard as a unitary, single-piece homogenous structure.