Plastic article or earthenware shaping or treating: apparatus – Female mold and charger to supply fluent stock under... – With means between charger and mold to cut off flow of...
Patent
1988-10-25
1990-03-20
Woo, Jay H.
Plastic article or earthenware shaping or treating: apparatus
Female mold and charger to supply fluent stock under...
With means between charger and mold to cut off flow of...
26432812, 425572, 425588, B29C 4530
Patent
active
049097253
ABSTRACT:
An apparatus for switching runners in an injection molding system of the type having cavities which are joined by runners, the apparatus having a bushing member which has a top end, a bottom end and a central aperture, the bottom end having at least two outwardly disposed runner extensions which are in flow communication with the central aperture and the cavity runners, a bushing insert which is sealingly and rotatably fitted within the central aperture of the bushing member and which has a bottom end having therein a runner extension device which is in flow communication with one of the runner extensions in the bushing member when the bushing insert is in one position and which is in flow communication with another runner extension in the bushing member when the bushing insert is in a second position; and an indexing member carried by the bushing insert and the bushing member for establishing a plurality of predeterined relative positions of the bushing insert relative to the bushing member.
REFERENCES:
patent: 4242073 (1980-12-01), Tsuchiya et al.
patent: 4708314 (1987-11-01), Kuhling
Gabala James A.
Gulbrandsen Carl E.
Heitbrink Timothy W.
Woo Jay H.
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