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7273571 |
Molded table and its method of manufacture
A plastic table structure includes a tabletop comprising a thin polymer shell layer surrounding an expanded foam core. The multiple layers of the finished tabletop are molded concurrently in a...
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7125083 |
Wheel with dual density
A wheel is provided for coupling to a bearing case at an outer cylindrical surface and a lateral annular surface of the bearing case. The wheel includes an inner wheel portion with an annular body...
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6908577 |
Process for manufacturing a capital for an architectural column
A process for manufacturing a capital for an architectural column. The inside of a mold for an architectural column is lightly coated with a mold release. A first opening of the mold is placed upon...
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6716384 |
Process for the rotational molding of polyurethane articles
The present invention pertains to a process for the rotational molding of polyurethane composite articles. The process is carried out by placing a polyurethane composite precursor composed of a...
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6579481 |
Process for manufacturing a capital for an architectural column
A process for manufacturing a capital for an architectural column. The inside of a mold for an architectural column is lightly coated with a mold release. A first opening of the mold is placed upon...
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6485088 |
Sheathing material for a construction machine and method for producing the same
Disclosed is a sheathing material for a construction machine and a method for producing the same, in which lightweighting can be attained without using a reinforcing member, and which is not...
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6398995 |
Rotationally molded door with integrally molded hinge member
A high impact resistant rotationally molded door and process for molding the door has the hinge post integrally attached to the rotationally molded skin of the door. A hinge member is provided that...
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6316512 |
Silane-grafted materials for solid and foam applications
New cross-linked polymeric foam compositions, and methods for making the same, are provided. The new compositions utilize novel cross-linked polyolefin copolymers and show improvements in strength,...
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6303060 |
Method of making non-deflatable tire and wheel assembly
In a preferred embodiment, the invention is a non-deflatable tire assembly having a hollow toroid-shaped flanged insert, a flexible body molded around the insert to form a tire, and at least one...
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6261490 |
Rotational moulding
A method of producing a plastics article having solid skin and a foam core by a rotational moulding process, comprises charging a mold with a skin-forming component and substantially simultaneously...
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6199593 |
Production of pipes insulated with foams
A process for producing pipes illustrated with foams comprises [a] providing, between an inner carrier pipe and an outer pipe arranged parallel thereto, a holder which is provided with at least one...
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6180203 |
Rotational moulding process
A method for rotational molding of articles, including the step of rotationally molding a mixture of particulate plastics material comprising at least one thermoplastics material having a first...
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6165397 |
Method for making tires and the like
A method of manufacture for producing a molded article from a polyurethane material, utilizing a spin casting apparatus, preferably a non-pneumatic tire, where a mold that is formed in sections or...
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6116374 |
Molded sound enclosure, and methods of making same
An enclosure for enclosing sound-producing equipment (such as a marine propulsion system), the enclosure having first and second opposing end panels, first and second opposing side panels, a base...
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6103775 |
Silane-grafted materials for solid and foam applications
New cross-linked polymeric foam compositions, and methods for making the same, are provided. The new compositions utilize novel cross-linked polyolefin copolymers and show improvements in strength,...
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6103153 |
Production of foamed low-density polypropylene by rotational molding
Compositions and processing conditions are disclosed for the production by rotomolding of polypropylene foams, hither to satisfactorily produced only by injection molding and extrusion molding....
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6083434 |
Rotational molding process for producing foamed articles
Improved compositions useful for the production of rotomolded articles having a foamed interior and non-foamed exterior skin are provided. The compositions of the invention are comprised of a first...
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6077907 |
Molded polyolefin parts of improved dimensional stability at elevated temperatures and improved stiffness
Molded polyolefin articles of improved dimensional stability at elevated temperatures and improved stiffness and consist of mixtures of modified propylene polymers, which are synthesized by free...
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6060006 |
Method of manufacture of synthetic stone article
A baluster or spindle is formed by a casting method, and has a rigid, dense, hollow outer shell forming a decoratively shaped body portion having closed, planar opposed ends. A conduit extends...
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6010650 |
Production of pipes insulated with foams
A process for producing pipes insulated with foams comprises providing, between an inner carrier pipe and an outer pipe arranged parallel thereto, a holder which is provided with at least one...
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5928584 |
Foamable compositions for rotational molding
Novel molding compositions consisting essentially of a mixture of a skin-forming component and a foam core-foaming component physically dry-blended together. The skin-forming component comprises...
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5922778 |
Rotational molding compositions and process for producing foamed articles therefrom
Improved compositions useful for the production of rotomolded articles having a foamed interior and non-foamed exterior skin are provided. The compositions of the invention are comprised of a first...
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5912315 |
Polymer composite, its molded article, and laminate
The present invention relates to the polymer composite possesses excellent mechanical properties such as restorable ability or shock resistance, coating property, and adhesiveness. It is preferred...
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5883145 |
Cross-linked foam structures of polyolefins and process for manufacturing
New cross-linked polymeric foam compositions, and methods for making the same, are provided. The new compositions utilize novel cross-linked polyolefin copolymers and show improvements in strength,...
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5883144 |
Silane-grafted materials for solid and foam applications
New cross-linked polymeric foam compositions, and methods for making the same, are provided. The new compositions utilize novel cross-linked polyolefin copolymers and show improvements in strength,...
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5837171 |
Method of encapsulating and sterilizing waste products for disposal or reuse
A method of encapsulating and sterilizing waste material is disclosed. Medical waste is deposited inside of a mold. When full, the mold is charged with plastic and one of several reactants. The...
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5830392 |
Compositions and process for rotational molding articles
Improved compositions useful for the production of foamed rotomolded articles are provided. The compositions of the invention are comprised of a first thermoplastic resin component which is an...
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5798437 |
Thermoplastic block copolymers
An amphiphilic block copolymer including a hydrophilic internal segment and polymeric articles made therefrom.
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5783611 |
Composition and process for rotational molding foamed articles
Improved compositions useful for the production of foamed rotomolded articles are provided. The compositions of the invention are comprised of a first thermoplastic resin component which is an...
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5741454 |
Method of making composite tiles containing waste plastic
The present invention concerns a manufacturing process and a related product constituted of a tile in plastic material. The process comprises the following operative stages: crushing a...
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5693271 |
Rotationally molding an insulated plastic molded door with integral hinge
A high impact resistant rotationally molded door and process for molding the door is disclosed in which a hinge member is integrally molded to the door along one edge only. This hinge member forms...
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5683636 |
Method of fan blade manufacture
A blade for a fan is formed by rotomolding around a pre-positioned support member, part of which extends out of the mold, the support member being shaped, or being provided with one or more...
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5645779 |
Molding part of thermoplastic resin and method of fabricating same
A protector made of thermoplastic resin to which a foaming agent is added is adapted such that no foams are present in the thermoplastic resin forming a predetermined volume area including lock...
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5639847 |
Preparation of conductive polyurethanes using a conductive quasi-solution
A conductive quasi-solution useful for making a homogeneously conductive single-phase polyurethane, comprising a transition metal salt, a carrier solution, and a dispersing agent, wherein said...
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5639801 |
Processing of anhydride-containing thermoplastic resins
An anhydride-containing thermoplastic resin such as a styrene maleic anhydride copolymer is processed in a vented extruder in the present of a nitrogenous chemical blowing agent to both imidize at...
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5624614 |
Methods of forming carvable shell articles
The invention is in the field of three-dimensional hollow novelty items and their manufacture, particularly items such as artificial pumpkins that the consumer desires to carve or alter after...
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5622763 |
Hydrocarbon vapor-impervious containers and process for producing them
Containers, which are impervious to hydrocarbon vapors, in particular to fuel vapors, and comprise an outer shell of plastic material, which is coated with a polyamide layer at least on the surface...
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5587117 |
Process for insulating pipes using polyurethane rigid foams by the rotational casting process
The invention relates to a process for insulating pipes by applying a rigid polyurethane foam as an insulating layer and optionally an external top coating by the rotational casting process. The...
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5534299 |
Process for insulating pipes
A process for insulating pipes comprises applying at least one layer of a polyisocyanurate plastic and then at least one layer of rigid polyurethane foam to a steel pipe. The foam is covered with...
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5470515 |
Rotational molding process for insulating pipes
For insulating pipes by application of at least one insulating layer and at least one outer surface layer by rotational molding, a rigid polyurethane foam is used as the insulating layer while a...
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5453230 |
Method for rotationally molding an article with a vulnerable insert
Methods and apparatus for molding a solid article incorporating one or more vulnerable inserts are disclosed. Centrifugal casting methods for producing a finished article composed of single or...
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5425907 |
Method of making a cylindrical filter cartridge
A cylindrical polymer fiber filter cartridge for liquid filtration is formed by applying an acrylic latex binder, diluted with water, to a batt of thermoplastic polymer fibers and winding the batt...
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5229047 |
Manufacture of microcellular foam tires
A method and apparatus for producing foam elastomer tires for various uses including bicycle and wheel chair tires with a minimum amount of wasted material. The method involves spin casting the...
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5223193 |
Process for preparing shaped bodies with integrated polyurethane skin, and shaped bodies obtained by such process
Process for preparing shaped bodies with integrated polyurethane skin, which process comprises: (a) charging to a closed mould for rotational moulding a first premixed reactive polyurethane...
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5173221 |
Method of molding and assembling structural
Mobile structural unit molding and assembling apparatus includes a support portion, a raw material supplying portion, a molding portion, a unit transferring portion and a control portion. The...
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5022838 |
Multi-axis rotational distributing apparatus
Multi-axis rotational polymeric mixture distributing apparatus includes a raw material supplying portion, a supporting portion, a raw material mixing portion, a polymeric mixture distributing...
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5011636 |
Structural unit and method for molding same
An integrally molded plastic structural unit includes spaced support members joined by a web section disposed therebetween, each of the support members including spaced face sections and an...
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4973438 |
Method for foam filling vinyl articles
A method of making a foam filled polymer article includes the steps of compressing an expandable foam material (12) and containing the compressed expandable material (12) in a degradable container,...
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4956234 |
Foamed PVC pneumatic ball
A low-pressure inflatable article, made by rotomolding of polyvinyl chloride materials, featuring a lower weight as compared to similar articles made of the same material as well as improved...
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4956135 |
Molding apparatus and method
Continuous molding apparatus includes a raw material supplying portion, a mixing portion, a molding portion, a mixture delivery portion, a supporting portion and a control portion. Each reservoir...
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