Plastic article or earthenware shaping or treating: apparatus – Female mold and charger to supply fluent stock under... – With means to evacuate mold or provide controlled environment
Patent
1981-11-04
1983-11-01
Pavelko, Thomas P.
Plastic article or earthenware shaping or treating: apparatus
Female mold and charger to supply fluent stock under...
With means to evacuate mold or provide controlled environment
425155, 425584, 264102, B29F 100
Patent
active
044128045
ABSTRACT:
Apparatus including a material reservoir, a tool having a mold cavity, and a cylinder having a plunger for pushing material received by the cylinder from the reservoir into the mold cavity. Equipment is provided for evacuating the reservoir, the mold cavity, and the cylinder. The reservoir is connected to the cylinder in a vacuum-tight manner. The evacuating equipment includes a vacuum pump and a vacuum reservoir, and valves permit optional connection of the material reservoir and the mold cavity to the vacuum pump or the vacuum reservoir. The volume of the vacuum reservoir is many times, i.e., 100 to 1000 times, greater than that of the mold cavity. A shutoff valve for disconnecting the mold cavity from the evacuating equipment is located in the immediate vicinity of the mold cavity. All the valves may be operated in a predetermined sequence by a control unit. The material reservoir may serve simultaneously as the vacuum reservoir.
REFERENCES:
patent: 2259465 (1941-10-01), Hardy
patent: 3433291 (1969-04-01), Hodler
patent: 4059376 (1977-11-01), Ito et al.
patent: 4146081 (1979-04-01), Reis
Levine Alan H.
MTU -Motoren-und Turbinen Union Munchen GmbH
Pavelko Thomas P.
LandOfFree
Apparatus for injection molding of precision parts does not yet have a rating. At this time, there are no reviews or comments for this patent.
If you have personal experience with Apparatus for injection molding of precision parts, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Apparatus for injection molding of precision parts will most certainly appreciate the feedback.
Profile ID: LFUS-PAI-O-2167063