Plastic and nonmetallic article shaping or treating: processes – Direct application of fluid pressure differential to... – Including hydrostatic or liquid pressure
Patent
1996-03-25
1997-10-28
Silbaugh, Jan H.
Plastic and nonmetallic article shaping or treating: processes
Direct application of fluid pressure differential to...
Including hydrostatic or liquid pressure
264138, B29C 4538
Patent
active
056815247
ABSTRACT:
Cylindrical tubular substrates for an electrophotographic conductor can be made with different lengths from an injection-molded plastic cylindrical mother tube. The length of the mother tube is sufficient for the greatest desired length. The mother tube has a slanting inner surface which facilitates removal of the tube from the molding die, and non-slanting inner end surfaces which can be stepped. The desired length is obtained by cutting the mother tube across one of the steps. The resulting non-slanting inner end surface of the substrate provides a spigot joint for tightly receiving a flange.
REFERENCES:
patent: 4526151 (1985-07-01), Tateishi et al.
Hikima Kiyoshi
Kawata Noriaki
Fuji Electric & Co., Ltd.
Lee Edmund H.
Silbaugh Jan H.
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