Plastic article or earthenware shaping or treating: apparatus – Distinct means to feed – support or manipulate preform stock... – Female mold type means
Reexamination Certificate
2007-01-09
2009-10-20
Davis, Robert B (Department: 1791)
Plastic article or earthenware shaping or treating: apparatus
Distinct means to feed, support or manipulate preform stock...
Female mold type means
C425S544000, C425S547000, C425S552000, C425S556000
Reexamination Certificate
active
07604469
ABSTRACT:
A degating device applied to remove a cull between two chip carriers comprises a lower mold, an upper mold, a blowing-opening, and a cooling pipe. The lower mold is used to load chip carriers and has a plunger set for propping and degating the cull. The upper mold is fit in with the lower mold tightly. The airflow blown out from the blowing-opening blows to lower the temperature around the chip carriers. The cooling pipe is disposed according to the position of the blowing-opening to cool down the temperature around the blowing-opening. The two chip carriers are disposed on the lower mold and fixed between the upper mold and the lower mold while the upper mold combines with the lower mold. By changing the position of the plunger set relative to the upper mold and the lower mold, the cull can be stripped from the chip carriers.
REFERENCES:
patent: 2923976 (1960-02-01), Strauss
patent: 4976900 (1990-12-01), Tsutsumi
patent: 62149141 (1987-07-01), None
patent: 02050442 (1990-02-01), None
patent: 07058137 (1995-03-01), None
Partial machine translation of JP 07-058137 A dated Mar. 1995 obtained from the JPO website.
Chang Chia-Ming
Chang Yun-Lung
Lee Chin-Sung
Tsai Yu-Chang
Advanced Semiconductor Engineering Inc.
Davis Robert B
Jianq Chyun IP Office
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