Plastic article or earthenware shaping or treating: apparatus – Shaping surface including means to release or remove product... – By movable ejector means entering mold cavity
Reexamination Certificate
2006-08-08
2006-08-08
Kuhns, Allan R. (Department: 1732)
Plastic article or earthenware shaping or treating: apparatus
Shaping surface including means to release or remove product...
By movable ejector means entering mold cavity
C425S175000, C425S554000
Reexamination Certificate
active
07086850
ABSTRACT:
A gear molding method for molding a plurality of plastic gears having a different number of ribs without changing costly gates uses a mold having a prescribed gear shape including a prescribed number of grooves substantially radially arranged in the mold. A prescribed number of gates is provided for pouring molten plastic into the mold. When a plastic gear is molded and separated from the mold, a prescribed number of grooves are additionally cut at a middle angular position between each of the pair of neighboring grooves without changing the gates. Then, another gear having increased number of ribs is molded using the same gates.
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Kuhns Allan R.
Ricoh & Company, Ltd.
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