Plastic and nonmetallic article shaping or treating: processes – Mechanical shaping or molding to form or reform shaped article – To produce composite – plural part or multilayered article
Reexamination Certificate
2007-05-08
2007-05-08
Lee, Edmund H. (Department: 1732)
Plastic and nonmetallic article shaping or treating: processes
Mechanical shaping or molding to form or reform shaped article
To produce composite, plural part or multilayered article
C264S279000, C264SDIG054, C425S125000, C425S542000
Reexamination Certificate
active
10474314
ABSTRACT:
A device including, and a method for producing, an electric insulator made of plastic, the insulator having a centrally arranged core made of glass fiber reinforced plastic, and having a plurality of insulation screens arranged coaxially around the core in an offset manner in an axial direction of the core. The method steps include: positioning a casting mold in an axial position around a vertically arranged core; producing a sealing connection between the core and the casting mold; injecting a liquid plastic material under pressure into an axial area of the casting mold; curing the liquid plastic material in the casting mold, thereby creating an insulation screen; deactivating the sealing connection; displacing the casting mold axially in a downward direction along a defined displacement path; and repeating the above steps until an insulator is produced having a desired number of insulation screens.
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Hennings Raimund
Janssen Harald
Barnes & Thornburg LLP
Lee Edmund H.
Trench Germany GmbH
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