Claims Analysis
Total Claims: 7
Claim 1
Independent Claim
144 words
Apparatus for molding a plastic container from a preform shaped to nest with others for shipment and storage with each preform having an open end portion of predetermined peripheral configuration and an opposite smaller end portion of predetermined configuration; and comprising a sectional female mold internally shaped according to the finished container to be reformed therein, a heated mandrel externally shaped substantially in accordance with the interior shape of the preform and insertable therewith into the female mold, means shielding both preform end portions against direct heat of the mandrel, means supporting the preform end portions against deformation during the reform shaping of the preform, and differential pressure means for reform shaping of the wall of the preform between the shielded and supported end portions thereof to the reformed container configuration with maintained integrity of the initial predetermined configurations of the said end portions.
Claim 2
Dependent Claim
144 words
Apparatus for molding a plastic container from a preform shaped to nest with others for shipment and storage with each preform having an open end portion of predetermined peripheral configuration and an opposite smaller end portion of predetermined configuration; and comprising a sectional female mold internally shaped according to the finished container to be reformed therein, a heated mandrel externally shaped substantially in accordance with the interior shape of the preform and insertable therewith into the female mold, means shielding both preform end portions against direct heat of the mandrel, means supporting the preform end portions against deformation during the reform shaping of the preform, and differential pressure means for reform shaping of the wall of the preform between the shielded and supported end portions thereof to the reformed container configuration with maintained integrity of the initial predetermined configurations of the said end portions.
Claim 3
Dependent Claim
28 words
Apparatus as claimed in claim 1, wherein the means shielding the open end portion of the preform comprises insulation means between the mandrel and the adjacent preform surface.
Claim 4
Dependent Claim
38 words
Apparatus as claimed in claim 1, wherein the means shielding the smaller end portion of the preform comprises recess means in the end of the mandrel facing the smaller end portion of the preform and substantially coextensive therewith.
Claim 5
Dependent Claim
45 words
Apparatus as claimed in claim 3, wherein the female mold is provided with a support surface in opposition to said recess means and substantially coextensive therewith for supporting the interposed smaller end portion of the preform against deformation during the reform shaping of the preform.
Claim 6
Dependent Claim
61 words
Apparatus as claimed in claim 4 for molding a shaker type plastic container from a preform with the smaller end portion apertured to provide shaker openings covered by a disc, and wherein the support surface of the female mold is in opposition to the disc during the reform shaping of the preform to maintain the original integrity of the shaker openings.
Claim 7
Dependent Claim
41 words
Apparatus as claimed in claim 5, wherein the female mold is recessed around the support surface to permit reform shaping of the preform wall to conform thereto while maintaining the integrity of the covered and apertured end portion of the preform.