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US 5,178,886 AGranted
Quick ports for molding
AssigneeUnited Technologies Corporation
InventorsThomas P. Donovan, Robert A. Lacko, Joseph A. Valerio
Life of this patent
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AssigneeUnited Technologies Corporation
InventorsThomas P. Donovan, Robert A. Lacko, Joseph A. Valerio
Estimating the term…
A resin injection port has a tapered outer cylindrical surface, an inner resin passage which is also tapered, and one or more grooves in the outward end thereof to provide a keyway for locking the plastic in the end after cure. The port also has a flange, with a recess matable with a head of a retaining bolt through rotation such that the port is twisted into position for injection. This simultaneously compresses an O-ring which provides a tight seal between the port and the mold. The flange has cut-away portions which align with the bolt head prior to twisting into position. Additionally, the mold has at least one pin which engages a corresponding inner cam surface on the port. The inner cam surface travels over the pins as the flange is twisted to force the port to break the plastic, release and move away from the mold with a 1/4 turn. Utilizing such an injection port provides a means for quickly releasing an injection port from a mold without requiring slide hammers or other such devices.
An injection port for supplying plastic to an interior cavity of a mold comprising a cylinder having an outer surface and a tapered inner passage, the inner passage increasing in diameter toward the interior of the mold, the inner passage having at least one longitudinal groove at an inboard end thereof, a flange, located on an end portion of the cylinder, means for retaining the flange against an outer surface of the mold, the means for retaining the flange being at least one fastener having a head and a threaded portion, the head locatable in a recess in the flange, and means for disengaging the port from the mold, the port being rotatable and removable from the mold.
An injection port for supplying plastic to an interior cavity of a mold comprising a cylinder having an outer surface and a tapered inner passage, the inner passage increasing in diameter toward the interior of the mold, the inner passage having at least one longitudinal groove at an inboard end thereof, a flange, located on an end portion of the cylinder, means for retaining the flange against an outer surface of the mold, and means for disengaging the port form the mold by rotation, the disengaging means being pins extending from the outer surface of the mold and inner cam surfaces located on the flange such that during rotation of the flange, the cam surfaces engage the pins and force the flange to move outwardly.
Dependencies are inferred from the claim text.