Spark plug insulator production method, insulator, molding die

Number of patents in Portfolio can not be more than 2000

United States of America Patent

PATENT NO 10751923
APP PUB NO 20170326765A1
SERIAL NO

15534529

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ATTORNEY / AGENT: (SPONSORED)

Importance

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Abstract

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An employed rear mold is comprised of a plurality of mold pieces. The plurality of mold pieces include a first mold piece which forms a first partial internal surface of the internal surface of the rear mold along the entire circumference of the internal surface, and a second mold piece which is located axially forward of the first mold piece and forms a second partial internal surface of the internal surface of the rear mold along the entire circumference of the internal surface. Releasing the molded body includes starting to move the first mold piece rearward in relation to a rear molded portion, and, subsequently to starting to move the first mold piece, starting to move the second mold piece rearward in relation to the rear molded portion, thereby disassembling the rear mold into the plurality of mold pieces.

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Patent Owner(s)

  • NGK SPARK PLUG CO., LTD.

International Classification(s)

Inventor(s)

Inventor Name Address # of filed Patents Total Citations
Hazama, Hiroyuki Nagoya, JP 22 130
Honda, Toshitaka Nagoya, JP 60 318
Kawaji, Hiroyuki Nagoya, JP 16 596
Kurono, Hirokazu Nagoya, JP 46 165
Tanaka, Kuniharu Nagoya, JP 37 180
Uegaki, Hironori Nagoya, JP 28 62

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