Multiport extruding die

Claim 2

A die for simultaneously extruding a plurality of tubular lengths of plastic material, said die comprising: a circular steel plate provided with a plurality of ports of equal size equally spaced around the periphery of said plate; each of said ports comprising a main passageway terminated by the downstream end on one side of said plate and an outlet on the other side; a spring steel stake positioned centrally in each port; means for holding said stake in each of said ports; said means comprising a hub positioned in the center of the downstream portion of said plate, and a plurality of arm members having one end recessed in said hub and the other end recessed in the downstream periphery of said plate; said arm members extending radially around said hub and each arm positioned so as to pass over the center of each of said ports; said arm member being provided with a counterbore for holding said stake in place in said port; a plurality of tapered grooves alternately disposed with respect to each other along the downstream periphery of said plate, each of which is provided with a Recess for the reception of one end of an arm member.

Claim 3

A multiport extruding die for forming hazardous material in tubular form which consists of: a circular-shaped steel base plate adapted to fit an extrusion press; a plurality of ports of equal size disposed equidistant from each other around the circumference of said plate; a plurality of tapered grooves alternately disposed with respect to each other along the downstream periphery of said plate; said grooves being equal in number to said ports and each groove forming a passageway into each of said ports on said downstream side; a cone-shaped steel hub disposed in the center of the downstream side of said plate; said hub being provided with a plurality of grooves equal in number to said ports which form a passageway into each of said ports; a plurality of rounded arm members equal in number to said ports positioned radially around said hub, one end of each member being secured to said hub and the other end being secured to the periphery of said plate; each said arm member being disposed across the center of each of said ports; a counterbore disposed in each of said arm members so as to be centered over each port; and a spring steel stake provided with a head on one end slidably positioned in said counterbore, said stake being centrally disposed in said port.

Claim 4

A multiport extruding die for forming hazardous material in tubular form which consists of: a circular-shaped steel base plate adapted to fit an extrusion press; a plurality of ports of equal size disposed equidistant from each other around the circumference of said plate; a plurality of tapered grooves alternately disposed with respect to each other along the downstream periphery of said plate; said grooves being equal in number to said ports and each groove forming a passageway into each of said ports on said downstream side; a cone-shaped steel hub disposed in the center of the downstream side of said plate; said hub being provided with a plurality of grooves equal in number to said ports which form a passageway into each of said ports; a plurality of rounded arm members equal in number to said ports positioned radially around said hub, one end of each member being secured to said hub and the other end being secured to the periphery of said plate; each said arm member being disposed across the center of each of said ports; a counterbore disposed in each of said arm members so as to be centered over each port; and a spring steel stake provided with a head on one end slidably positioned in said counterbore, said stake being centrally disposed in said port.