Means Press Fitting Or Forcibly Embedding One Preform Into Another Preform Patents (Class 425/517)
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Patent number: 6234782Abstract: An injection mould for making a bucket with a handle pivotally connected to the bucket by means of projections on the handle, said projections being in snap engagement with diametrally opposed openings in the bucket, said mould comprising a stationary mould half (20) and a movable mould half (21). The two mould halves (20,21) define a bucket mould cavity (27) corresponding to the shape of the bucket and handle mould cavity (29) corresponding to the shape of the handle and which in its entirety is radially external to the bucket mould cavity (27). The handle mould cavity (29) is externally defined by a movable mould member (34) in each of the portions corresponding to the projections. The mould member (34) is arranged on an arm (36) connected to an ejection plate (32). Further ejection pins (33) are connected to the ejection plate (32) for ejection of the handle.Type: GrantFiled: July 14, 1999Date of Patent: May 22, 2001Assignee: A.B.C. Hansen Vaerktojsfabrik A/SInventor: Albert B. C. Hansen
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Patent number: 6221189Abstract: A method for manufacturing thermoplastic tubes from hollow thermoplastic sleeves by a variety of different manufacturing processes. The machine used in the method is a single apparatus having an indexing device with a plurality of mandrels for holding hollow thermoplastic sleeves for the purpose of transporting the same around a closed manufacturing path. The method involves advancing sleeves around the closed manufacturing path to form tubes from the sleeves.Type: GrantFiled: November 25, 1998Date of Patent: April 24, 2001Assignee: Thatcher Tubes LLCInventors: Ronald E. Kieras, John J. Rhoades
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Patent number: 6206681Abstract: A movable mold is movable toward and away from a fixed mold so as to close and open the mold. The fixed mold includes an intermediate plate facing a movable-side mold plate. This intermediate plate has a retainer-molding recess which cooperates with the movable-side mold plate to form a retainer-molding cavity, and a core pin, which cooperates with a housing-molding recess to form a housing-molding cavity, is mounted on the intermediate plate. A retainer, molded in the molding cavity, is moved downward by an ejector pin into a position where the retainer is disposed coaxial with a housing. Then, the two molds are again closed together, so that the housing and the retainer are connected together, and then this assembled product is taken out.Type: GrantFiled: February 9, 1999Date of Patent: March 27, 2001Assignee: Sumitomo WiringInventors: Hajime Kawase, Osamu Sasai, Yasunori Wada, Shinsuke Tsutsui, Hikaru Ito
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Patent number: 6171629Abstract: An apparatus for joining dough blocks to form a continuous dough sheet. The dough blocks are cut from a dough mass and drop into a space between first and second groups of rollers. The first and second groups of rollers include horizontally-paired rollers arranged in tiers and forming a substantially V-shaped space for receiving the dough blocks, with the uppermost pair of rollers being separated by a first horizontal gap which is wider than a second horizontal gap separating the lowermost pair of rollers. The first group of rollers are rotated in a direction (e.g., clockwise) which is opposite to that of the second group of rollers. In addition, the first group of rollers is alternately moved toward and away from the second group of rollers, thereby applying vibrations to the dough blocks.Type: GrantFiled: January 6, 1997Date of Patent: January 9, 2001Assignee: Rheon Automatic Machinery Co., Ltd.Inventor: Michio Morikawa
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Patent number: 6129880Abstract: A headed thermoplastic tube having a closure member is formed solely from a thermoplastic extruded, stretched sleeve by positioning the sleeve over a forming mandrel with an exposed portion and heating the exposed portion. The heated exposed portion is shaped into a head in a single step by contacting the exposed portion with a closure means which is later retained on the head after initial contact. The internal cavity of the closure means, which may have threads or grooves formed in the internal cavity, is made of an incompatible material to facilitate the forming of a head in said cavity. The closure means may also have tamper evident features.Type: GrantFiled: November 25, 1998Date of Patent: October 10, 2000Assignee: Thatcher Tubes LLCInventors: Ronald E. Kieras, John J. Rhoades
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Patent number: 6082990Abstract: A stent crimping tool for firmly and uniformly crimping a stent onto a balloon catheter. The stent crimping tool is constructed of three orthogonally arranged semi-circular shaped cams rotatably mounted on a common base. Two cams are disposed horizontally side-by-side and one cam is vertically disposed. Rotation of the three cams is synchronized by interacting racks on each cam. A groove is formed into the outer circumference of each cam and the three cams are arranged on the base, which also includes a groove, to collectively form an axial space in which a stent-catheter assembly is inserted. Rotation of the cams draws the uncrimped stent and catheter into the axial space in which the stent is crimped onto the balloon catheter by the compressive forces exerted by the grooves of the cams and the base.Type: GrantFiled: February 17, 1998Date of Patent: July 4, 2000Assignee: Advanced Cardiovascular Systems, Inc.Inventors: Gregg A. Jackson, Stephen A. Morales
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Patent number: 6056906Abstract: An intravascular catheter system and method of manufacture for implanting a radially expandable stent within a body vessel. The catheter system includes a shaft defining an inflation lumen in fluid communication with a balloon on the distal end of the shaft. A stent is mounted coaxially upon a balloon. The balloon has ridges impressed in the outline of the stent for at least a portion of the stent. The ridges are sized to receive the stent so as to cause the balloon to expand evenly and the stent to deploy uniformly. In an alternative embodiment the balloon may additionally have a polymeric surface layer exhibiting a higher coefficient of friction than the underlying material against the stent material. The surface layer may be provided as a high friction polymeric coating on a formed balloon or as a coaxial extrusion of a high friction polymeric material over the underlying balloon tubing material.Type: GrantFiled: November 26, 1997Date of Patent: May 2, 2000Assignee: Medtronic, Inc.Inventors: Randell L. Werneth, John J. Bridgeman, Gary E. Currie
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Patent number: 5971740Abstract: A compression mold and blow mold are provided in spaced relationship to each other. A preform is formed from a preform precursor in the compression mold and transferred to a blow mold while maintaining the spaced relationship between the compression mold and blow mold, and a container is formed from the preform in the blow mold.Type: GrantFiled: February 3, 1998Date of Patent: October 26, 1999Assignee: The Elizabeth and Sandor Valyi Foundation, Inc.Inventor: Herbert Rees
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Patent number: 5830518Abstract: A device for tucking covering materials into a formed component comprises a support mold for the formed component which supports covering materials such as textiles, on its upper face for insertion into the formed component at a ring-formed tucking groove outward from the outer periphery of the upper face. The device has a tucking mold that is positioned at the outer periphery of the support mold for the formed component, and that has a ring-formed tucking blade which is capable of tucking an edge of the covering materials into the tucking groove of the formed component supported by the support mold for the formed component. An outer support mold for an outer periphery is positioned at the outer periphery of the ring-formed tucking mold, and supports the outer periphery of the formed component supported by the support mold for the formed component.Type: GrantFiled: August 15, 1994Date of Patent: November 3, 1998Assignee: Nissen Chemitec CorporationInventor: Tadayuki Oda
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Patent number: 5820896Abstract: An apparatus is provided for manufacturing a lampshade from a heat-deformable sheet material. The apparatus includes a first supporting assembly for supporting a hollow body formed from the heat-deformable sheet material, the hollow body having upper and lower peripheral edges. A second supporting assembly is provided for releasably supporting a forming and stiffening ring in peripheral engagement with an interior surface of the hollow body adjacent a peripheral edge of the hollow body so that a marginal edge portion of the hollow body projects beyond the forming and stiffening ring. The second supporting assembly is located adjacent the first supporting assembly and includes a retractable supporting assembly for engaging an underside and an upper side of the forming and stiffening ring.Type: GrantFiled: June 3, 1996Date of Patent: October 13, 1998Assignee: Welwyn Lighting Designs LimitedInventors: Jeremy David Wheatley, Andrew Carl Diamond, Nicholas Sten Elliott
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Patent number: 5630975Abstract: A method for joining at least two plastic elements in a liquid- and/or gastight manner, whereby an edge of a first plastic element is at least partially placed in an opening of a second plastic element, the edge of the first plastic element being folded over an edge of the opening of the second plastic element under plastic deformation, using a pressure device. The edge of the first plastic element is pressed against a curved butting face of a pressure body placed in the second plastic element at the opening thereof and the edge of the first plastic element along the butting face is pushed radially outwardly and over the edge of the opening of the second plastic element. The edges of both plastic elements are pressed together by exerting pressure on both sides of the edges. Alternatively, use is made of a sealing ring at least partially between the edges.Type: GrantFiled: November 2, 1994Date of Patent: May 20, 1997Assignee: Nyloplast Europe B.V.Inventor: Frederik K. A. Wulff
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Patent number: 5622734Abstract: Disclosed is a process for producing a crimp-bonded fibrous cellulosic laminate. The process includes the steps of: 1) providing at least two superposed plies of a fibrous cellulosic material; 2) passing the superposed plies through a crimp roll arrangement including a rotating crimp element and a rotating anvil element; and 3) applying a pressure load against the rotating elements sufficient to crimp bond the fibrous cellulosic material plies into a laminate. The crimp element has protruding members configured in a discontinuous pattern aligned on an axis that is parallel to the cross-machine direction to provide a substantially continuous uniform area of localized surface contacts between the rotating crimp and anvil elements across the width of the plies. Also disclosed is an overall crimp-bonded fibrous cellulosic laminate and an apparatus for crimp-bonding multiple superposed plies of a fibrous cellulosic material.Type: GrantFiled: May 23, 1995Date of Patent: April 22, 1997Assignee: Kimberly-Clark CorporationInventors: Harry E. Clark, Cynthia W. Henderson, Robert C. Marcinek, Frances W. Mayfield, Thad W. Perkins, Jorg F. Voss
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Patent number: 5591470Abstract: A method and device for docking a rimmed crust carried on an intermittently moving conveyor is provided. The device has a vertical reciprocating piston positioned above the rimmed crest, a plate supported by the piston, a plurality of pins protruding downwardly from the plate in a predetermined docking pattern, a stripper plate supported from and below the plate wherein the stripper plate has a plurality of holes arranged to allow the pins to penetrate therethrough, resilient springs positioned between the stripper plate and the plate to force the stripper plate and the plate apart, and a controller to operate the piston to move the plate toward the conveyor and to lift the plate away from the conveyor. A method of perforating a plurality a rimmed crust of dough is also provided.Type: GrantFiled: October 12, 1995Date of Patent: January 7, 1997Assignee: A.M. Manufacturing CompanyInventor: James Bartley
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Patent number: 5486387Abstract: An impact resistant film suitable for medical solution pouches and the packaging of parenteral materials generally includes an interior layer of an ethylene vinyl acetate copolymer and outer layers of a propylene homopolymer or copolymer blended with a styrene ethylene butylene styrene copolymer. In some cases, a flexible copolyester may be substituted for one of the outer blend materials. Sacrificial layers may be optionally be included on one or both outer surfaces of the film to improve processing.Type: GrantFiled: August 27, 1993Date of Patent: January 23, 1996Assignee: W. R. Grace & Co.-Conn.Inventor: Walter B. Mueller
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Patent number: 5437828Abstract: A plurality of shapes each having a fundamental construction of a flange are vacuum formed on a continuous sheet of thermoplastic resin. When blanking each of the formed shapes out of the resin sheet into an individual flange, a spool core is placed coaxially with the formed shape placed in the blanking position. The flange just blanked out of the resin sheet is moved in the blanking direction toward the spool core, to be fit on the spool core. The shapes are formed in a double line along the resin sheet, and thereafter, the resin sheet is slit along the longitudinal direction into two sheet branches each having the formed shapes arranged in a single line. The back side surfaces of the two sheet branches are opposed to each other, and the spool core is disposed between the sheet branches and oriented in a direction perpendicular to the back side surfaces of the sheet branches. The formed shapes are blanked out of the sheet branches in opposite directions toward opposite ends of the spool core.Type: GrantFiled: June 24, 1993Date of Patent: August 1, 1995Assignee: Fuji Photo Film Co., Ltd.Inventors: Makoto Shimizu, Mituru Suzuki, Susumu Sato, Koichi Takahashi, Toshiro Esaki
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Patent number: 5266258Abstract: Method of installing an insert in a plastics body so as to provide a screw thread therein, the insert being of metal and formed with the screw thread, and in which the hole in the plastic which receives the insert is sealed, by providing the insert with an `O` ring located in an external peripheral groove and projecting therefrom, the size and shape of the insert and hole being related and selected so that in axial displacement of the insert into the preformed hole accompanied by softening of the plastic caused by the fastener being preheated or by vibrations applied to the plastic via the fastener as it is inserted, the `O` ring only comes into contact with unsoftened plastic and only comes into contact with plastic towards the end of the axial installation movement. This ensures a good seal between the `O` ring and the plastic.Type: GrantFiled: July 27, 1992Date of Patent: November 30, 1993Assignee: PSM International PLCInventor: Paul A. Martin
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Patent number: 5240401Abstract: A machine for producing lollipops 3 having a rotatable die ring 6 with radial press rooms 11 into which cut sugar pieces 1 are fed from inside the die ring and from which the completed lollipops 3 are discharged outwardly, with assistance of centrifugal force. Pivotal flaps 16 are provided to prevent escape of the cut sugar pieces from the cavities of movable shear blades 7 after the cut sugar pieces have been successively fed into the cavities.Type: GrantFiled: February 14, 1992Date of Patent: August 31, 1993Inventor: Hendricus A. J. M. Derckx
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Patent number: 5133654Abstract: An apparatus is provided for the manufacture of a fire-resistant, waterproof and heat-insulating board. The apparatus includes upper and lower roller conveyors of an appropriate length upon which synchronously rotating retaining walls are arranged at the sides thereof, an automatic spray gun for spraying an insulating foam onto board material, a mangle for shaping the board material, board cutting apparatus located at the output end of the apparatus, and an adjustor for the apparatus. The operation of the apparatus can be suitably adjusted on the basis of the desired specifications of the board produced.Type: GrantFiled: March 5, 1991Date of Patent: July 28, 1992Inventor: Chao-Chin Sheen
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Patent number: 4994132Abstract: A method and apparatus for attaching an insert in an opening in a molded thermoplastic body. The insert includes a thermoplastic mounting portion which is fused with the thermoplastic material of the body. The insert is maintained in a spaed position from the opening during the heating portion of the molding cycle and positioned within the opening while the thermoplastic material is still sufficiently hot to fuse with the thermoplastic mounting portion of the insert.Type: GrantFiled: February 13, 1990Date of Patent: February 19, 1991Assignee: Essef CorporationInventors: Michel Liekens, Edward T. LeBreton, Arthur M. Kepler
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Patent number: 4983116Abstract: This invention relates to a secondary molding machine capable of injection molding a handle, a base cup, or the like on a body portion, a bottom portion or the like of a thin-wall hollow container made of synthetic resin. The machine includes a rotational member provided movably up and down on a column on a machine bed, an insert mechanism including a lateral molded-product holding device mounted on the rotational member, a clamping mechanism for connecting an upper clamping plate, which is moved up and down for opening and closing the mold cavities to the rotational member, a secondary mold that is opened and closed up and down having the same first cavity as a hollow molded product and a secondary molding cavity. An air blowing device is connected to a blow core.Type: GrantFiled: July 25, 1989Date of Patent: January 8, 1991Assignee: Nissei ASB Machine Co., Ltd.Inventor: Kouhei Koga
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Patent number: 4954305Abstract: Bristle articles can be manufactured in that the bristle carrier and optionally the ends of the bristles are melted and brought together under pressure, or the bristles are introduced into an injection or foaming mould for the bristle carrier and are embedded in the bristle carrier material by injection moulding or foaming. The cycle time of these processes is extremely long as a result of the thermal processes (heating, melting, injection moulding, cooling). It is possible to significantly reduce the same in that the tools for holding or producing the bristle carrier on the one hand and the clamping devices for the bristles on the other are moved on closed paths and the clamping devices at at least one common station are transferred to the path of the tools and at least during the thermal processes are jointly moved with the tools and are subsequently returned to their movement path.Type: GrantFiled: May 27, 1988Date of Patent: September 4, 1990Assignee: Coronet-Werke Heinrich Schlerf GmbHInventor: Georg Weihrauch
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Patent number: 4948355Abstract: One apparatus for forming a workpiece made of thermoformable material includes: (a) a base member; (b) a positioning frame supported by the base member; (c) a suspension tray for supporting a raw workpiece, the suspension tray being supported by the positioning frame; (d) a first pair of forming dies supported by the base member; (e) a press platen; (f) a second pair of forming dies moved by the press platen; (g) an actuator for moving the suspension tray whereby the suspension tray may be moved to a first position and to a second position between the pairs of forming dies; and (h) a cylinder for moving the press platen whereby the first pair of forming dies and the second pair of forming dies may be closed against the raw workpiece and the suspension tray. Other apparatus are also disclosed.Type: GrantFiled: August 18, 1988Date of Patent: August 14, 1990Assignee: The Boeing CompanyInventor: Frederick L. Knoll
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Patent number: 4944665Abstract: A label transferring apparatus useable for in-mold label application. In a first embodiment, a transfer device is mounted on a pivotable radial arm and comprises two pairs of transfer heads mounted for rapid, reciprocal transverse movement. A stack of labels is supplied by corresponding two pairs of magazines located at a first radial position. The radial arm is positioned by a fluid actuated rack and pinion mechanism.Type: GrantFiled: November 29, 1989Date of Patent: July 31, 1990Assignee: Siegfried C. HasslInventors: Siegfried C. Hasl, Charles J. Lisnet
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Patent number: 4891000Abstract: A preformed arrangement is suspended in a blow molding die by one or more suspension lines. A parison is formed about the arrangement and then pressed into contact with the same so that as the vessel is formed the arrangement and the suspension line or lines becomes connected and/or integral with the shell of the vessel.Type: GrantFiled: February 5, 1988Date of Patent: January 2, 1990Assignee: Nissan Motor Co., Ltd.Inventor: Tatsushi Ishii
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Patent number: 4880368Abstract: An in-mold label transfer apparatus. In a first embodiment transfer devices mounted on an extension device comprise a pair of label applicator heads which move transversely to receive labels and to deliver same to the mold surfaces. This transfer device comprises power actuated mechanical elements including rack and pinion, cam arm scissor and scissors arrangements. Another transfer device comprises a pair of side-by-side opposed piston and cylinder units. Other embodiments include transfer arms having label transfer heads at the ends thereof, the arms comprising rods movable from a first position placing the label applicator head at the mold and a second position completely outside of the mold, and whereat the label applicator heads are positionable relative to label magazines for receiving labels. A special label applicator head constructed resiliently to resiliently urge the label against the interior of a mold surface.Type: GrantFiled: October 24, 1983Date of Patent: November 14, 1989Assignee: Siegfried C. HaslInventors: Siegfried C. Hasl, Charles J. Lisnet
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Patent number: 4838776Abstract: A label transferring device which places labels simultaneously in separate sides of a mold used in blow molding machines. A hydraulic cylinder has a carriage assembly mounted to the piston rod so as to be extended between the separated mold sections and retracted to a position between a set of label supply magazines. The label supply magazines are positioned so that a set of opposed carrying cylinders can extend and pick up the labels on carrying heads and place the labels on the placement areas in the mold. Alternatively, the carrying cylinders are mounted on a pair of extendable, converging clamp arms which clamp onto the molded objects, remove them from the molding area and transport the objects to other processing stations in the machine.Type: GrantFiled: August 18, 1983Date of Patent: June 13, 1989Inventor: Siegfried C. Hasl
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Patent number: 4776803Abstract: A card edge connector (10) includes electrical contacts (15) for engaging traces of a printed circuit card to establish electrical connection therewith, a housing (16) for supporting the contacts, a strain relief (17) directly molded to at least part of the contacts and housing for securing the same as an integral structure, the contacts having a compliance characteristic in the card edge connector, and a secondary compliance mechanism (95) for increasing the effective compliance characteristic of the contacts in the card edge connector. Such secondary compliance mechanism is provided by a shrinkage of some of the molded strain relief material during cooling thereof. The contacts and housing provide part of a shut of function and a shut off key (56) inserted into the housing for use during the molding provides another part of a shut off function to block flow of molding material into a contacting area of the housing (27).Type: GrantFiled: November 26, 1986Date of Patent: October 11, 1988Assignee: Minnesota Mining and Manufacturing CompanyInventors: David A. Pretchel, John T. Venaleck
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Patent number: 4744741Abstract: A molding apparatus for making a plastics pipe fitting or pipe coupling by injection-molding the plastics pipe fitting or coupling body, injection-molding at least one sealing ring separately but substantially simultaneously, and bringing the body and sealing ring together directly after the molding while these components are still in a hot as-molded state, so that a direct thermal bond is formed between them comprises respective injection-molding cavities for the body and sealing ring, and a reversible support for carrying the sealing ring out of its mold and into contact with the molded body. The respective molds are opened and the components are not stripped but are brought together for bonding while still in position on respective mold members, thereby eliminating intermediate handling and ensuring that the molded components remain clean and of accurate shape and dimension as they are brought together.Type: GrantFiled: July 7, 1986Date of Patent: May 17, 1988Assignee: The Hepworth Iron Company LimitedInventors: John B. Glover, Ronald A. Ireland, Colin Adie
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Patent number: 4732600Abstract: An apparatus is described for filling notches in a notched workpiece with a soft filler material having a viscosity similar to glasses. The apparatus has a bottom portion which receives the notched workpiece and a top portion. The top portion has a lower surface adapted to apply a concentrated pressure in the direction of the bottom portion to enhance flow of the soft filler material into the notches when that material is inserted between the assembled top and bottom portions.Type: GrantFiled: May 15, 1986Date of Patent: March 22, 1988Assignee: Ampex CorporationInventor: Edward Schiller
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Patent number: 4729731Abstract: A label transferring apparatus useable for in-mold label application. In a first embodiment, a transfer device is mounted on a linear actuator having a piston rod extending out a first end and carrying the label transfer device and extending out the other end whereat it is supported on a track means. A stack of labels is supplied by corresponding two pairs of magazines located at a first radial position. In a second embodiment the linear actuator is mounted so as to be cantilevered back over the forward end of the piston and cylinder which comprises the linear actuator. In this embodiment the piston and cylinder may be shortened by excluding that portion of the piston rod extending out the other end of the cylinder.Type: GrantFiled: July 3, 1986Date of Patent: March 8, 1988Assignee: Siegfried C. HaslInventors: Siegfried C. Hasl, Charles J. Lisnet
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Patent number: 4625102Abstract: A method of manufacturing a memory card comprises taking an electronic module, which includes an insulating substrate and an integrated circuit, and locally raising the temperature of the plastic material of the card to its softening point. The module is then applied, with pressure, on one side of the card at its softened location to embed the module in the plastic material.Type: GrantFiled: June 7, 1984Date of Patent: November 25, 1986Assignee: FlonicInventors: Alain Rebjock, Rene Rose
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Patent number: 4579517Abstract: Apparatus for handling edible products, comprising means for laying down a length of edible product on to a takeoff conveyor and cutting the length into sections, characterized by the use of a line of successive travelling turntables along and on which the length is laid, and by cutting the length into sections between the turntables in a manner which allows relative separation by rotation of the cut sections, and by rotating each turntable carrying a cut section through a defined angle, thereby to present a cut end of the section substantially transversely of the line of the conveyor.Type: GrantFiled: February 22, 1984Date of Patent: April 1, 1986Assignee: Thomas J. LiptonInventor: Donald R. Biggs
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Patent number: 4533424Abstract: A portable pipe fusion apparatus for attaching plastic side wall fittings e.g. tees, branch saddles to a plastic pipe of selected composition. This apparatus comprises a base plate with means to rigidly clamp the base plate to a pipe main. Two parallel, spaced support rods attached to the base plate at one end, and to a support plate across the other two ends. Movable clamp means guided to slide along the support rods with the axis of movement intersecting the axis of the pipe main. The movable clamp means is adapted to be attached to and hold various of the side wall fittings rigidly, so that the axes of the fittings intersect the axis of the main pipe. Drive screw means held in a quick release split nut means on the support plate, will force the movable clamp in the direction to contact the transverse pipe main. A hydraulic load cell is interposed between the drive screw and the movable clamp with an indicator which continually reads the force being applied between the moving clamp and the pipe main.Type: GrantFiled: January 13, 1984Date of Patent: August 6, 1985Assignee: McElroy Manufacturing, Inc.Inventor: Arthur H. McElroy
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Patent number: 4455134Abstract: A hand-operated thermal press for installing metal inserts in a workpiece of a thermoplastics material comprises a frame (12) including an upright post (16) on which is slidably mounted a support bracket (24) carrying an insert driver (18). Movement of the bracket (24) along the post (16) is limited by adjustable clamps (20, 22) and the bracket (24) is biassed into a starting position by a coil spring (28). A hand-operable mechanism (34) is provided for moving the insert driver (18) along the post (16). The insert driver (18) incorporates a heating unit movable relatively to the insert driver (18) against a biassing spring (100). The heating unit includes a core (70) heated by the unit and which supports a bit (92) adapted to receive the metal insert to be installed. The clamps (20, 22) are adjusted to provide a required movement of the insert driver and the spring bias (100) ensures a consistent driving force for installing the insert.Type: GrantFiled: August 1, 1983Date of Patent: June 19, 1984Assignee: C.E.M. Co., Inc.Inventor: Gordon R. Biggs
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Patent number: 4448739Abstract: The invention relates to a method and a device for manufacturing multi-ply sheets of extrudable plastics material supplied by way of at least two webs which are produced by extruders having flat sheet dies and which are bonded to a structured insert web by means of rolls. Moreover, the invention relates to multi-ply sheets thus produced, especially for use with a shower enclosure. In manufacturing such multi-ply sheets it is difficult to obtain a reliable bond between the webs and the structured web without sophisticated machinery. There is also the requirement that the structured web be uniformly introduced between the webs. The invention proposes to feed these webs to a single common set of rolls and to arrange the flat sheet die of at least one extruder so close to a set of rolls that a reliable permanent bond to the structured web and/or at the other web is obtained by the heat accumulated and carried in the one web just extruded.Type: GrantFiled: March 11, 1982Date of Patent: May 15, 1984Inventor: Heinz G. Baus
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Patent number: 4362684Abstract: A welding sleeve useable for connecting of pipes formed from thermoplastic material, is formed from a tubular body of thermoplastic material and a coil disposed on its inside surface. The coil has a resistance wire encased with thermoplastic material. The windings of the coil (4) are bonded into a compact coil which is inserted into the heated tubular body while it is simultaneously widened. As the result of a partial contraction of the tubular body also of the coil a firm connection develops between the oil and the body. Furthermore, the tubular body has a frozen-in, latent, radial contraction strain as a result of the widening, which during heating during the welding process, eliminates the radial play between coil and the pipes and produces a welding pressure.Type: GrantFiled: March 27, 1981Date of Patent: December 7, 1982Assignee: George Fischer AktiengesellschaftInventor: Alfred Thalmann
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Patent number: 4351630Abstract: A device for exercising a living hinge of an article and/or closing a lid of a cap while the article or cap is in a mold for forming the article or cap. The device includes a finger which slides between the mold sections, and, in the process, engages a portion of the article or the lid, rotates the portion or lid about the hinge, and in the case of the cap, snaps the lid shut. In an alternate preferred embodiment, when the finger reaches predetermined point it pivots toward the female mold section to snap the lid tightly shut.Type: GrantFiled: December 31, 1980Date of Patent: September 28, 1982Assignee: Global Precision Inc.Inventors: Robert S. Hayberg, Eugene L. Foltuz
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Patent number: 4349497Abstract: The ends of plastic optical fibers forming a light-transmitting cable are fused in a manner so as to minimize light loss by applying heat to plasticize short end-length portions while containing portions rearwardly thereof within a cavity defined by means having sufficient thermal conductivity and mass that the rearward portions are not heated above the plastic fiber deformation temperature. Both methods and various forms of apparatus for practicing the methods are disclosed.Type: GrantFiled: April 8, 1981Date of Patent: September 14, 1982Assignee: Sheltered Workshop for the Disabled, Inc.Inventor: Paul A. Blackington
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Patent number: 4340352Abstract: A device for exercising a living hinge of an article and/or closing a lid of a cap while the article or cap is in a mold for forming the article or cap. The device includes a finger which slides between the mold sections, and, in the process, engages a portion of the article or the lid, rotates the portion or lid about the hinge, and in the case of the cap, snaps the lid shut. In an alternate preferred embodiment, when the finger reaches a predetermined point it pivots toward the female mold section to snap the lid tightly shut.Type: GrantFiled: December 31, 1980Date of Patent: July 20, 1982Assignee: Global Precision Inc.Inventor: Robert S. Hayberg
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Patent number: 4295814Abstract: A method and apparatus are described for producing an article constituted of two or more plastic parts, wherein a pair of mold plates are each provided with at least two spaced forming surfaces defining, in a closed position of the plates during a molding stroke, separate cavities each of the shape of one of the parts of the article. The mold plates are closed during the molding stroke to form the parts, after which the mold plates are opened and the apparatus is operated according to one or more assembling strokes. During each assembling stroke, one plate is stepped with respect to the other to bring the two parts into alignment, and the two mold plates are then closed to apply one part to the other.The method and apparatus are described with respect to making a three-part spray nozzle.Type: GrantFiled: June 27, 1979Date of Patent: October 20, 1981Inventor: Peretz Rosenberg
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Patent number: 4165999Abstract: The present invention is concerned with a method for the manufacture of objects having two shaped surfaces from setting material such as cement and gypsum mixtures. In this method a discrete quantity of the setting material is applied to a mold portion having a surface corresponding to one of the shaped surfaces of the object and is permitted to set therein. The improvement of the invention comprises the application of a discrete quantity of the setting material also to a mold portion having a surface corresponding to the second shaped surface of the desired object. The two mold portions are then brought together to form a mold while the setting material contained therein is still shapable. Hereby the quantities of shapable material are pressed against each other to form the desired object. The latter is then separated from the mold portions.Type: GrantFiled: March 7, 1978Date of Patent: August 28, 1979Assignee: Euroc Development ABInventor: Ernst M. Egner
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Patent number: 4136275Abstract: Apparatus for installing metallic inserts into thermoplastic material. The apparatus comprises a heating device in combination with a heating element having a first bore adapted to receive the heating device. The heating element is formed into an elongated tip specifically shaped to grasp a metallic insert which is then heated by conduction to a temperature suitable for melting the thermoplastic material. A longitudinal bore in alignment with the first bore and coupled thereto with a second bore extends through the heating element elongated tip. Plunger apparatus slidably inserted in the longitudinal bore and second bore is positioned by spring apparatus located in the second bore to maintain the metallic insert in engagement with the elongated tip of the heating element during the heating and insertion of the metallic insert into the thermoplastic material.Type: GrantFiled: January 11, 1977Date of Patent: January 23, 1979Assignee: Bell Telephone Laboratories, IncorporatedInventor: Harold E. McCullough
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Patent number: 4111634Abstract: This invention contemplates an apparatus for affixing to a papermaking felt a plurality of beads comprising means for supporting a papermaking felt having a working surface and means for applying beads of plastic backing, said beads extending away from said working surface and having top portions which are spaced from each other along said working surface to form channels for liquid flow.Type: GrantFiled: September 16, 1976Date of Patent: September 5, 1978Assignee: H. Waterbury & Sons CompanyInventors: Paul Limbach, Paul Socha
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Patent number: 4098636Abstract: A label is placed in due contact with the surface of an article being extruded and then forcibly urged to a preselected depth in the plasticized article. The label and the article are thereafter cooled.Type: GrantFiled: August 12, 1974Date of Patent: July 4, 1978Assignee: Phillips Petroleum CompanyInventor: Henry Gabriel
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Patent number: 4097324Abstract: There is disclosed a lattice structure having a plurality of elongated parallel elements interconnected periodically by integrally formed ribs therebetween and a plurality of elongated filaments, each of which is embedded in and adhered to one of the elongated parallel elements. The structure is constructed by a method which includes the steps of molding the lattice structure from film or laminate belts, heating the filaments above the melting temperature of the molded lattice structure, joining the heated elements with the structure and solidifying the lattice structure adjacent each filament.Type: GrantFiled: April 4, 1977Date of Patent: June 27, 1978Inventor: Leroy L. Emmel
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Patent number: 4090835Abstract: The present invention relates to apparatus for edging reinforced elastomeric fabric and a preferred method for the operation thereof. One embodiment of apparatus includes a frame, a table for support of the elastomeric fabric, at least one extruder assembly adjacent the table for the application of a suitable elastomeric material directly onto an edge of the elastomeric fabric and means for moving the elastomeric fabric over the table. In an alternate embodiment, the apparatus includes a frame, means for support of the elastomeric fabric and at least one extruder assembly adjacent the means for support for the application of a suitable elastomeric material directly onto an edge of the elastomeric fabric.Type: GrantFiled: September 14, 1976Date of Patent: May 23, 1978Assignee: The Steelastic CompanyInventors: Wright Bronson, Jr., Thomas Ashworth, Jr., Ralph Frederick Kiemer, Gail William Hausch
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Patent number: 4075272Abstract: A method of mounting steps on the inner wall surface of a manhole section comprising implanting the steps in the section while the same is still green and following removal of the inner form but before removal of the outer form, positioning each step in confronting relation with the manhole section and thereupon smoothly and uniformly, without vibration and hammering, pushing the step into the concrete and compacting the concrete around the implanted step. The apparatus may be portable and shifted into the manhole section through an end thereof after the inner form has been removed but prior to removal of the outer form, and positioned against the base ring at opposite inside diameters thereof and engaging the outer form at the top of the manhole section and while thus engaged urging the step into the manhole section as aforesaid. Alternatively the apparatus may be stationary and the manhole section temporarily moved thereto and supported thereon during step implanting.Type: GrantFiled: April 16, 1976Date of Patent: February 21, 1978Inventor: Edward P. Washabaugh
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Patent number: 4071393Abstract: Apparatus for use in the manufacture of a wiring harness of the kind including a plurality of conductive leads having their thermoplastic sheaths fused to a thermoplastic backing tape includes first and second rollers between which the leads and the thermoplastic tape pass in use. The rollers press the tape against the leads and at least one of the rollers is driven so that the leads and the tape are driven between the rollers as a result of rotation of the rollers. A hot air blower is movable relative to the rollers between an operative position and a rest position. In the operative position the hot air is blown onto the tape and the sheaths of the leads immediately before they pass between the rollers so that when pressure is applied to them by the rollers the heated surfaces fuse together. The rest position of the heater is spaced from the rollers so that hot air issuing from the heater is not directed onto the rollers.Type: GrantFiled: May 12, 1976Date of Patent: January 31, 1978Assignee: Lucas Industries LimitedInventor: Robert Amphlett
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Patent number: 4063866Abstract: A machine for manufacturing concrete building blocks faced with a decorative material is provided with a mold having a wall which is removable to expose a face of a freshly cast block. The material is arranged on a horizontal panel alongside the block and this panel is pivoted into a vertical position to apply the material to the exposed face of the upright block. A clamping and vibrating action is applied to the panel to further embed the material in the vertical face.Type: GrantFiled: May 3, 1976Date of Patent: December 20, 1977Inventor: Manfred A. Lurbiecki
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Patent number: 4056346Abstract: A method and apparatus for the shaping and cutting of bread dough which forms the dough into a bar or belt shaped strip, stretches the dough, cuts the dough and overlaps the dough.Type: GrantFiled: February 25, 1975Date of Patent: November 1, 1977Inventor: Torahiko Hayashi