Forming die assembly with enhanced stop
AssigneeFort James Corporation
InventorsAlbert Johns, Mircea Sofronie
Life of this patent
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Abstract
A die assembly for producing paperboard pressware includes an obliquely angled, continuous ring, and/or annular stop member between an inner die member and an outer die ring. Increased surface area of contact between stop components provides greater wear resistance, and the angled contact face maintains alignment of the die components.
Claims22
1) An apparatus for producing paperboard pressware, comprising:
- a) an inner die member having a peripheral face;
- and
- b) an outer die ring surrounding the inner die member and translationally mounted thereon,
- said outer die ring comprising at least one stop having an internal contact face for abutment against a confronting portion of the peripheral face of the inner die member to limit translation of the outer die ring relative to the inner die member, wherein the internal contact face is angularly inclined relative to a translational axis of the outer die ring, and wherein the angle of inclination is not less than about 10°.
11) An apparatus for producing paperboard pressware, said apparatus comprising an outer die ring mounted to traverse a stroke along an inner die member, said outer die ring comprising at least one circumferential stop member having an annular contact face for limiting the stroke of the outer die ring.
19) An apparatus for producing paperboard pressware, comprising:
- a) an inner die member having an outer peripheral face comprising at least one inner die member stop having an angularly-inclined external face;
- and
- b) an outer die ring surrounding the inner die member, the outer die ring comprising at least one die ring stop having an angularly-inclined internal face;
- wherein the internal face of each said at least one die ring stop engages against the external face of a corresponding inner die member stop to limit the travel of the outer die ring relative to the inner die member.
Dependencies are inferred from the claim text.