Plastic article or earthenware shaping or treating: apparatus – Preform reshaping or resizing means: or vulcanizing means... – Including shaping means comprising fluid pressure contacting...
Reexamination Certificate
2011-08-02
2011-08-02
Davis, Robert B (Department: 1747)
Plastic article or earthenware shaping or treating: apparatus
Preform reshaping or resizing means: or vulcanizing means...
Including shaping means comprising fluid pressure contacting...
C425S405100, C425S812000, C425SDIG010
Reexamination Certificate
active
07988442
ABSTRACT:
A vacuum mold includes a mold body with a molding surface. The mold body defines a plurality of extraction holes. Each extraction hole includes a first hole portion, a second hole portion, and a connecting portion connecting the first hole portion and second hole portion. The first hole portion is adjacent to the molding surface, and a diameter of the first hole portion is smaller than a diameter of the second hole portion.
REFERENCES:
patent: 3577593 (1971-05-01), Jackson
patent: 4740145 (1988-04-01), Shurman
patent: 6524519 (2003-02-01), Ohba et al.
patent: 6749794 (2004-06-01), Spengler
patent: 6887066 (2005-05-01), Cerny et al.
Deng Jian-Bin
Liu Bo
Yu Jiang
Yuan Qing-Ming
Zhang Shao-Hui
Chi Clifford O.
Davis Robert B
FIH (Hong Kong) Limited
Nguyen Thu Khanh T
Shenzhen Futaihong Precision Industry Co. Ltd.
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