Abstract: A plasticizing unit is provided for palsticizing material which is subsequently supplied to an injection molding press. The unit includes a screw disposed in a barrel which has an inlet, an outlet, a reservoir zone portion, and a plasticizing zone portion. The plasticizing zone portion of the barrel and the screw each have a continuous helical groove of opposite hand as the other groove and the grooves transfer material therebetween to effect plasticizing of the material. The reservoir zone portion of the barrel receives a shot volume of material which has been plasticized during passage through the helical grooves of the barrel and the screw. A volume displacement member which is axially movably disposed in a bore of the screw is movable within the reservoir zone portion to selectively control the shot volume of plasticized material received in the reservoir zone portion.
Abstract: A mold element comprised of metallic pellets and a bonding agent to bond together the metallic pellets. The metallic pellets can be a mixture of ferrous shot and ferrous grit and the bonding agent can be a solvent or a resin. An associated method is also provided.
Abstract: Disclosed is a collapsible plug which is insertable into the interior section of an appliance cabinet and expandable therein to simultaneously extend the plurality of panels to provide lateral shoring support to each of the interior surfaces of the cabinet so as to prevent bulging thereof during the injection and curing of insulating foam in the cavity between the interior surfaces and external surfaces of the cabinet, and collapsible so that the plug can be inserted into and removed from the cabinet interior without contacting the interior surfaces during insertion nor removal. Particularly, the disclosed design allows different thicknesses of tooling panels having surfaces complementary to the interior surface of the cabinet to be employed without concern for contact between adjacent panels upon their retraction due to the additional thickness.
Abstract: Apparatus for the production and proper calibration of improved flexible hoses made by a soft thermoplastic material reinforced with a continuous spiral of rigid thermoplastic material. During their production the hoses do not rotate but are produced linearly and in their internal surface no longitudinal grooves are engraved. The melted coaxial materials are discharged through a rotating mechanism to a calibration unit which rotates with it and bears peripherally special inclined rollers on which is transmitted, via an epicyclic gearing system, a controlled rotation opposite to the above direction. On this calibration unit the plastic hose is formed successively, advancing linearly forward.
Abstract: A process for thermoforming thermo-plastics including a random copolymer of polypropylene and polyethylene. The process including stretching in at least one direction, a film or sheet containing polypropylene and polyethylene random copolymer to partially orient the sheet sufficiently as to reduce sag during thermoforming and thermoforming the stretched sheet.
Abstract: An article forming system for forming at least one sheet of material into an article, such as a decorative flower pot cover for example, and a novel article formed utilizing such a system. The article forming system includes a male die, a female die and a platform having a support surface and an opening extending through the support surface. The female die is disposed generally within the opening in the platform with the upper end of the female die being disposed near the support surface. The article forming system includes means for slidingly holding portions of the sheet of material generally against portions of the support surface while permitting such held portions to slide on the support surface during the forming of the article for cooperating in forming a decorative border on the decorative flower pot cover type of article which flares generally away from the flower pot object when the decorative flower pot cover article is applied to the flower pot.
January 16, 1990
Date of Patent:
May 4, 1993
Highland Supply Corporation
Donald E. Weder, E. H. Weder, R. E. Jack Dunn, Franklin J. Craig
Abstract: An adjustable sealing system for use in a molding apparatus is disclosed. The molding apparatus is used for applying a coating of polymeric material to the surface of a shell. The molding apparatus includes a molding surface and a seal groove adapted for retaining a seal. The molding apparatus is capable of receiving a shell and forming a molding cavity between a surface of a shell and the molding surface. The seal establishes sealed contact between the shell and the molding surface when the molding apparatus is closed. The adjustable sealing system includes a seal for insertion and retention in a seal groove of the molding apparatus, so that a portion of the seal extends from the seal groove to a selected height when the molding apparatus is open. A seal height adjustment means is disposed under the seal in the seal groove. The seal height adjustment means is capable of adjusting the height of the seal above the seal groove to correspond to a particular contour of a shell being molded.
Abstract: The vulcanizing mold has an upper mold member, a lower mold member, a sector surrounding the space between the upper and lower mold members and an actuator movable upward and downward relative to the sector to move the sector radially outward and inward. The actuator is divided into an upper actuator portion and a lower actuator portion. The sector is also divided into an upper sector portion and a lower sector portion. The mold further has a connection for connecting the actuator portions together to raise the lower actuator portion by a predetermined amount with the rise of the upper actuator portion and for separating the lower actuator portion from the upper actuator portion upon the portion rising more than the predetermined amount, when the mold is opened.
Abstract: Apparatus for shaping elongated composite structures of a resin matrix reinforced with randomly broken fibers oriented in transverse and non-transverse directions with respect to the longitudinal axis of the structure is implemented by a computer aided apparatus for forming the structure. The apparatus is provided with a heated fixed forming tool, a means for stretching the structure from each end and means associated with the forming tool for separately holding each formed component length of the structure in place against the forming tool. The formed structure has the particular orientation of the fibers in the transverse and non-transverse direction after the structure is formed.
Abstract: A vehicle tire loading-unloading device having a mobile loading-unloading unit designed to enter inside a tire curing unit for receiving a cured tire on an upper supporting unit and, at the same time, releasing into the curing unit a green tire loaded on a suspension unit located beneath and integral with the upper supporting unit; the mobile loading-unloading unit being rotatable for unloading the cured tire.
Abstract: A film forming composition including a film forming substance having amphiphilic molecules and being dispersed in a gel-like carrier having a non-liquid state below about 20.degree. C. The carrier stabilizes the film forming substance, and inhibits diffusion of moisture and oxygen into the composition. This minimizes deterioration of the film forming substance, and also minimizes undesirable formation of agglomerations of such substance. When the composition is applied to a surface, an ultra thin substantially continuous film of substantially uniform thickness forms spontaneously and attaches to the surface. The excess composition is then washed away.
Abstract: A spreading unit which may be used for the spreading of particles for the production of thin pressed board or as a cover layer or face layer for a multilayer pressed board in conjunction with other spreading units along a belt upon which a mat of the mixture of particles and glue is to be formed. The spreading unit has a bunker and a discharge system for discharging a raw material stream in free-fall which is intercepted by an air classifier spreading the particles onto the belt in parabolic paths. In a region directly below the raw-material discharge and over a portion of the parabolic paths, a ball-collecting unit, for example a disk grate, is provided to intercept the balls while allowing the particles to pass without altering their classification. Fine particles of the parabolic paths beyond the ball catcher pass directly onto the belt.
Abstract: A molding system for molding a plastic grip member and, at the same time, linking it to a linking protruding piece of a container closure body. The molding system comprises a rotary container closure body conveyor apparatus and a compression molding apparatus. The container closure body conveyor apparatus is provided with a rotary disc that has a plurality of container closure body-receiving portions formed therein and a rotation preventing mechanism that prevents the rotation of the container closure bodies held in the receiving portions. The compression molding apparatus has a mold constituted by a first mold portion and a second mold portion. The first mold portion includes a moving member that moves between a mold position and a separated position. The moving member has a supporting surface for supporting the skirt wall of the container closure body and a support projection for supporting the linking protruding piece of the container closure body.
Abstract: Apparatus for producing plastic parts with a resilient projection, such as connectors for corrugated tubing. The apparatus includes means for flowing plastic material on a core provided with a recess to mould the resilient projection, plural core cam surfaces to extract the resilient projection out of the recess, after the mass of plastic material is solidified and extract the solidified part from the core.
Abstract: A head unit for a semiconductor lead frame leader including a vertical operating portion, a clamping portion having two pairs of jaws for clamping the lead frame and with the clamping portion interlocking with the vertical operating portion, a fixing portion with a pair of jaws secured thereto, an adjusting portion with a pair of jaws secured thereto for adjusting the distance separating each pair of jaws in order to accommodate different sizes of lead frames and which interlocks with the adjusting portion upper plate is disclosed.
Abstract: A retractable mold protrusion assembly for thermoforming parts is disclosed which is both self-contained and self-operating. The assembly includes a housing, a protrusion molding member moveably mounted to the housing, and an offset mounted spring. The protrusion molding member is movable with respect to the housing between a locked configuration and a pivoting configuration. When in its locked configuration, the protrusion molding member is securely held in a protruding position in which it protrudes away from the housing. In this position, a piece may be molded about the protrusion molding member to form a desired protrusion in the piece being formed. After molding has been completed, the removal of the molded piece slides the protrusion molding member into a second pivoting configuration, in which the protrusion molding member is pivotable into the housing to allow the molded piece to be completely removed.
Abstract: A vehicle tire loading-unloading and stabilizing device having a mobile loading-unloading unit designed to enter inside a tire curing unit for receiving a cured tire on an upper unit and, at the same time, releasing onto the curing unit a green tire loaded on a suspension unit located beneath and integral with the upper unit; the upper unit being a stabilizing unit enabling the cured tire to be inflated by means of a pressurized fluid, and to be cooled from the inside by forced circulation of the pressurized fluid.
Abstract: A die arrangement that will attach to the discharge of a conventional grinding or extruding machine to shape discharged food product onto a ramp and including means to secure a forming block to a distributor member to feed foodstuffs to the forming block and an adapter to selectively seal the connections between the adapter, distributor member and forming block and to release such sealing engagement for easy removal and replacement of the forming block.