Plastic and nonmetallic article shaping or treating: processes – Forming continuous or indefinite length work – Layered – stratified traversely of length – or multiphase...
Patent
1996-03-25
1999-08-17
Vargot, Mathieu D.
Plastic and nonmetallic article shaping or treating: processes
Forming continuous or indefinite length work
Layered, stratified traversely of length, or multiphase...
15624422, 156294, 264 407, 26417115, 264236, 264294, 264347, 425113, 425114, 425135, 425502, B29C 3500, B29C 6502
Patent
active
059389982
ABSTRACT:
Method and apparatus for manufacturing a composite insulator which includes an FRP core rod covered by a sheath and provided with a plurality of sheds which are made of an electrically insulating polymeric material. The sheds are set on a support member arranged on a downstream side of an extruder. The extruder is fed with a core rod and extrudes a polymeric material to form a sheath on the core rod. The core rod with the sheath is moved toward the downstream side through an opening in the support member. The sheds are sequentially moved along the support member toward the downstream side and transferred onto predetermined locations on the sheath that have passed through the opening and have reached the downstream side. An assembly is thus formed which includes the core rod, sheath formed on the core rod, and sheds transferred onto the sheath. The assembly is then heated to vulcanize the sheath and adhere it to the core rod and the sheds.
REFERENCES:
patent: 3898372 (1975-08-01), Kalb
patent: 4312123 (1982-01-01), Wheeler
patent: 4505033 (1985-03-01), Wheeler
patent: 4724284 (1988-02-01), Wheeler
patent: 4749824 (1988-06-01), Orbeck
Abe Tetsuhiko
Ishino Shigeo
NGK Insulators Ltd.
Vargot Mathieu D.
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