Plastic and nonmetallic article shaping or treating: processes – Forming continuous or indefinite length work – Of varying cross-sectional area or with intermittent...
Reexamination Certificate
2005-08-30
2005-08-30
Lechert, Jr., Stephen J. (Department: 1732)
Plastic and nonmetallic article shaping or treating: processes
Forming continuous or indefinite length work
Of varying cross-sectional area or with intermittent...
C264S171130, C264S245000, C264S252000, C425S116000, C425S120000, C425S121000, C425S129100, C425S545000, C425S557000, C425S561000, C425S572000, C425S582000
Reexamination Certificate
active
06936202
ABSTRACT:
Apparatus for manufacturing a multicolor slide fastener includes an upper die110,a lower die120,and a plurality of unit fastening teeth-forming slots101formed in a lengthwise direction. Molding material-injecting passages and a plurality of sprue holes102are provided for injecting the molding materials S into the slots101.Inclined passages201and202are connected to the molding material injecting passages respectively, for carrying the molding materials S from a raw material source. Heaters240and heat sensors241heat the passages201and202.Pressing means300press the molding materials S into the inclined passages201and202.Valves400control injection of the molding materials S into the sprue holes102of the upper die110.
REFERENCES:
patent: 6422851 (2002-07-01), Kang
Lechert Jr. Stephen J.
Roth & Goldman, P.A.
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