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
1992-03-03
1994-07-12
Heitbrink, Tim
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...
425567, 425569, 425DIG47, 425DIG51, B29C 4523
Patent
active
053283520
ABSTRACT:
A sprue and valve assembly (22) delivers a curable liquid material to a mold cavity (26) and thereafter is easily cleaned of the cured residual core (52) remaining from the liquid material. A sprue (34) having a flow passage (36) extends between the exterior surface of a mold (24) and a runner (30) in the mold (24). A valve body (54) is connected to the exterior face of the sprue (34). A coin slide type closure element (56) within the valve body (54) is controlled by a lever mechanism to selectively open or close the flow passage (36) to the curable liquid material flow. The flow passage (36) is tapered to permit easy removal of the cured residual core (52). PTFE seals (74) are disposed on opposite sides of the closure element (56). A bayonet fitting permits quick connection and disconnection of a supply line (18) to the valve body (54). An ejector assembly (80) connects to the bayonet fitting and includes an ejector shaft (84) which is manually struck to eject the cured residual core (52) held fast within the flow passage (36).
REFERENCES:
patent: 2436122 (1948-02-01), Rotsler
patent: 2923031 (1960-02-01), Collion
patent: 2988779 (1961-06-01), Barton et al.
patent: 2992455 (1961-07-01), Salzman
patent: 3462333 (1969-08-01), McCormick et al.
patent: 3787159 (1974-01-01), Bielfeldt
patent: 4108956 (1978-08-01), Lee
patent: 4231987 (1980-11-01), Osawa et al.
patent: 4498860 (1985-02-01), Gahan
patent: 4592721 (1986-06-01), Charlebois et al.
patent: 4828480 (1989-05-01), Smith
patent: 5028377 (1991-07-01), Hendry
LandOfFree
Sprue and valve assembly for delivering a curable liquid materia does not yet have a rating. At this time, there are no reviews or comments for this patent.
If you have personal experience with Sprue and valve assembly for delivering a curable liquid materia, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Sprue and valve assembly for delivering a curable liquid materia will most certainly appreciate the feedback.
Profile ID: LFUS-PAI-O-392553