Plastic article or earthenware shaping or treating: apparatus – Female mold and charger to supply fluent stock under... – With means to heat or cool
Reexamination Certificate
2007-04-24
2007-04-24
Heitbrink, Tim (Department: 1722)
Plastic article or earthenware shaping or treating: apparatus
Female mold and charger to supply fluent stock under...
With means to heat or cool
C264S328150
Reexamination Certificate
active
10934544
ABSTRACT:
A series of injection molding nozzles, one series having a two-piece nozzle and the other series having a three-piece nozzle. The two-piece nozzles include an inner and an outer insert portions, and the three-piece nozzles include an inner insert, an outer insert and a retaining thermal ring portions. The nozzles in accordance with the embodiments of the present invention include one, or more novel feature and which include: an extended thermo-barrier, a thermo-barrier access gap, threaded engagements between the nozzle pieces and/or between the nozzle and the nozzle housing, as well as structure elements that enable an improved methods for the removal and/or replacement of the nozzles from their housing. In addition, different performance conditions are encouraged in the nozzle designs by use of different or same thermal conductivity and/or hardness type materials. For example, materials may be selected such that the individual nozzle pieces are all made of the same material, different materials or combinations thereof.
REFERENCES:
patent: 2529146 (1950-11-01), Feitl
patent: 5299928 (1994-04-01), Gellert
patent: 6394785 (2002-05-01), Ciccone
patent: 2003/0082263 (2003-05-01), Olaru
patent: 2004/0091562 (2004-05-01), Pilavdzic et al.
patent: 2005/0031728 (2005-02-01), Babin et al.
patent: 2005/0048161 (2005-03-01), Trakas
patent: WO 02/40245 (2002-05-01), None
Heitbrink Tim
Injectnotech Inc.
Townsend and Townsend / and Crew LLP
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