Plastic and nonmetallic article shaping or treating: processes – With measuring – testing – or inspecting
Patent
1994-03-07
1996-02-27
Silbaugh, Jan H.
Plastic and nonmetallic article shaping or treating: processes
With measuring, testing, or inspecting
2643281, 26432812, B29C 4580, B29C 4507
Patent
active
054946212
ABSTRACT:
A cartridge including a cartridge case having a disc-shaped recording medium received therein so as to allow predetermined information signals to be recorded and reproduced, and a shutter and method for producing the shutter which is molded of a synthetic resin to slidably open and close an opening portion formed on the cartridge case so as to allow at least a part of the disc-shaped recording medium to be exposed to the outside. The shutter includes an upper main plate, a lower main plate and a coupling plate which connects the upper main plate to the lower main plate via the coupling plate in an integrally molded state while having a U-shaped cross-sectional contour to hold the cartridge case in a clamped state. A gate used for performing a molding operation is formed on the outer surface of the side plate, with the position of the gate being determined such that it always remains within an effective opening region corresponding to the opening portion.
REFERENCES:
patent: 4695925 (1987-09-01), Kodai et al.
patent: 5093067 (1992-03-01), Gibson
patent: 5139724 (1992-08-01), Hofstetter
patent: 5161081 (1992-11-01), Machida et al.
Chino Naoyoshi
Irie Tadashi
Machida Kazutoshi
Sugisaki Tsutomu
Taki Ikuo
Fuji Photo Film Co. , Ltd.
Gruskin Steven M.
Ortiz Angela
Silbaugh Jan H.
Turner Richard C.
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