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| Number | Title | Issue Date |
| 7396881 | Polyethylene compositions for rotational molding Polyethylene blend compositions suitable for rotomolding, rotomolded articles, and processes for rotomolding articles are provided. The polyethylene compositions include a first polyethylene having a melt index of 0.4 to 3.0 g/10 min and a density of from 0.910 to 0... | 07/08/2008 |
| 7316366 | Compact creel A highly mobile, compact creel that utilizes frames for holding yarn packages (or bobbins) for feeding yarn to a tufting machine. Each frame includes holders affixed to the frame for holding yarn packages facing front and back, a header attachable to the frame for d... | 01/08/2008 |
| 7118700 | Method for inhibiting algae growth in water tanks and apparatus therefor A method of inhibiting the growth of algae and like organisms in plastic water tanks exposed to sunlight comprises providing an outer tank surface operative to reflect off a substantial portion of sunlight that hits the tank off the outer tank surface; and providing... | 10/10/2006 |
| 7097802 | Disposable LMA The disclosed method for fabricating low cost laryngeal mask devices includes providing a mold, the mold including interior walls that define a hollow interior volume. The interior volume includes a first portion and a second portion. A liquid plastic material is in... | 08/29/2006 |
| 7094169 | Rotary cutter assembly A rotary cutter assembly (11) includes a rotary cutter (74) rotated by a motor (76) through a drive including pulleys (250, 264) and a belt (326) inside of a combination guard and belt tensioner assembly (260). The rotary cu... | 08/22/2006 |
| 7074468 | Fuel tanks Liquid containes made from certain ethylene copolymers have been found to leak less, swell and wrap less than conventional plastic liquid containes. The invention therefore provides the use of an ethylene and at least one C3-10 α-olefin copolymer having ... | 07/11/2006 |
| 7004415 | Compact creel A highly mobile, compact creel that utilizes frames for holding yarn packages (or bobbins) for feeding yarn to a tufting machine. Each frame includes holders affixed to the frame for holding yarn packages facing front and back, a header attachable to the frame for d... | 02/28/2006 |
| 6984118 | Method and apparatus for the production of tubes from concrete mix The invention concerns a procedure for the production of tubes from concrete mix, whereby the concrete mix is filled into a shaping device, for the purpose of shaping, where it is condensed with a tool. The invention should enable an effective and fast production of... | 01/10/2006 |
| 6969741 | Polyethylene compositions for rotational molding Polyethylene blend compositions suitable for rotomolding, rotomolded articles, and processes for rotomolding articles are provided. The polyethylene compositions include a first polyethylene having a melt index of 0.4 to 3.0 g/10 min and a density of from 0.910 to 0... | 11/29/2005 |
| 6902695 | Stabilizer combination for the rotomolding process A process for the production of polyolefin hollow articles comprises charging the polyolefin with a stabilizer combination comprising (a) at least one compound from the group of the organic phosphites or phosphonites, (b) one or more compounds selected from the grou... | 06/07/2005 |
| 6852271 | Flexible insulation blanket having secondarily bonded ceramic matrix composite layer A flexible insulation blanket having a smoothly surfaced, secondarily bonded, ceramic matrix composite (CMC) outer layer, and a method of producing a flexible insulation blanket having a secondarily bonded CMC layer by forming a CMC prepreg layer comprising a woven ... | 02/08/2005 |
| 6756007 | Method for preparing an implantable prosthesis for loading into a delivery apparatus A method and method to ensure the uniform collapse and diminished loading forces of a prosthesis, the prosthesis having at least one layer of biocompatible material. The device includes a way to stabilize the prosthesis, wherein the prosthesis can be incrementally a... | 06/29/2004 |
| 6713009 | Method and apparatus for molding plastics with elongated metallic cores A rotomolded plastic wall and ladder structure (10, 50, or 58)), which may be an article such as a window well (10) or a manhole (50 or 58), includes a thermoplastic wall (12), a ladder (16) whose rungs (18) ea... | 03/30/2004 |
| 6632902 | Process for rotomolding with melt-extruded TFE/PAVE copolymer A process for rotomolding using novel melt-extruded melt-fabricable TFE copolymer minicubes, wherein at least 80% of the minicubes are in the size range of 200 to 1200 μm.... | 10/14/2003 |
| 6500375 | Fabrication of seamless tube To make a seamless tube of polyimide, an amount of polyamic acid precursor to constitute the final tube is applied eveny as a solution to a cylindrical mandrel. The mandrel is rotated while a canted doctor blade smoothes the solution. The solvent is then ... | 12/31/2002 |
| 6444733 | Stabilizer combination for the rotomolding process A process for the production of polyolefin hollow articles comprises charging the polyolefin with a stabilizer combination comprising (a) at least one compound from the group of the organic phosphites or phosphonites, (b) one or more compounds selected fr... | 09/03/2002 |
| 6370916 | Flare manufacturing method It is an object of the present invention to reduce variations in dimensional accuracy such as the outer-diameter accuracy and roundness of a flare shape and the concentricity between the bulb portion and the flare portion. According to the present inventi... | 04/16/2002 |
| 6350337 | Method of manufacturing structure by using biodegradable mold A core is made of a biodegradable material, reinforcing fibers and non-hardened resin are laminated on the core so as to form a fiber-reinforced composite material. Then, the fiber-reinforced composite material is hardened, and then biochemically active s... | 02/26/2002 |
| 6258453 | Thermoplastic composite materials made by rotational shear A composite with a thermoplastic matrix and fiber reinforcement is made by rotation of an exit die about a roving of continuous fiber in the presence of a thermoplastic melt. The rotation causes opposing inner and outer helical flow conditions which reduc... | 07/10/2001 |
| 6132668 | Biaxially oriented ordered polymer films This invention relates in general to the formation of thick films having a biaxial molecular orientation. Such films are prepared in accordance with the present invention from rod-like extended chain aromatic-heterocyclic ordered polymers. Such films have... | 10/17/2000 |
| 5874032 | Method for manufacturing expanded polytetrafluoroethylene products An improved method is provided for extruding ePTFE tube (12) for use in medical applications. A tube (12) of PTFE is extruded, preferably in an extrusion process, using counter-rotated die components (22, 26). The die component (16) is maintained at a con... | 02/23/1999 |
| 5824254 | Process for moulding a thermoplastic material by injection onto a rotating core Process for moulding a thermoplastic material by injection onto a rotating core, in which the relative rotation of the various parts of the mould takes place during at least a part of the dwell stage and ends before the end of this stage. This process, wh... | 10/20/1998 |
| 5804125 | Process for producing ferrules by injection molding polymers while rotating a mold part Flow lines are eliminated from workpieces injection-molded from liquid crystal polymers, fiber-filled or mineral-filled thermoplastics by selecting a liquified polymer having a linear coefficient of thermal expansion less than (2-6)×10-6 /°K,... | 09/08/1998 |
| 5798072 | Process for moulding a thermoplastic material by injection onto a rotating core Process for injection moulding on a rotating core of a thermoplastic material exhibiting a modulus of relaxation in shear Gn (7.5) higher than 0.15. This process, which gives good results with polyolefins, makes it possible to manufacture artic... | 08/25/1998 |
| 5753159 | Injection spin molding process A molding process includes flowing a polymer melt into the cavity of a mold which includes a core pin. After the mold is filled and skin layers of solidified polymer have formed adjacent the mold wall and core pin wall, the core pin is spun transversely t... | 05/19/1998 |
| 5639409 | Method for manufacturing a tubular extrusion The method for manufacturing a tube-like extrusion profile includes the steps of: simultaneously conveying a number of, in the circumferential direction of the profile, divided streams of material of at least two different compositions to a molding-nozzle... | 06/17/1997 |
| 5616351 | Compaction head of a production machine for reinforced concrete pipes A compaction head of a production machine for reinforced concrete pipes has a smoothing cylinder, non-rotatably mounted on its drive shaft, for smoothing the inside of the concrete mixture that has been filled into a vertical mold. On a covering wall of t... | 04/01/1997 |
| 5571541 | Device for reconditioning tubes, particularly cardboard tubes The object of the present invention is to recondition cardboard or similar tubes with deformed parts, notably at the ends, whilst avoiding the usual milling techniques and without removing any material. The deformed parts of each tube (1) are recalibrated... | 11/05/1996 |
| 5505887 | Extrusion process for manufacturing PTFE products An improved extrusion method is employed in a process which is used to form tubing for medical applications. The method includes providing an extrusion apparatus having a die which includes a die cavity and a mandrel within the die cavity. The die is rota... | 04/09/1996 |
| 5456590 | Counter-rotating compaction head for manufacturing concrete pipes A counter-rotating compaction head for manufacturing a concrete pipe is vertically positioned in a vertical mold within the longitudinal axis of the mold so as to be rotatable about and axially slidable along the longitudinal axis of the mold. The counter... | 10/10/1995 |
| 5366676 | Method and apparatus for manufacturing concrete panels by continuous pressing A method for manufacturing concrete panels by continuously pressing and an apparatus for carrying out the method. The concrete panels are successively manufactured by continuously feeding pallets onto a conveyor, feeding a concrete material onto the palle... | 11/22/1994 |
| 5364578 | Combination counter rotating packerhead and vibrator assembly and method of operation thereof An improved combination counter rotating packerhead and vibrator assembly is provided. A counter rotating packerhead including counter rotating roller assemblies, longbottom assemblies or a combination thereof is disposed directly over an annular pneumati... | 11/15/1994 |
| 5346663 | Method of producing a spliceless annular tread cap A method of producing a spliceless annular tread cap (2), whereby a portion (23) of an extruded tube (21) of green elastomeric material is fed inside an annular body (8), the inner annular surface (17) of which presents a diameter approximately equal to b... | 09/13/1994 |
| 5292472 | Coextrusion apparatus and method with rotating cord guidance Coextrusion apparatus for forming tubular elastomeric ply made up of first, second and third concentric streams of elastomeric material and a pair of coaxial helical patterns of individual reinforcing elements wound in opposite direction with respect to e... | 03/08/1994 |
| 5290498 | Ultra-high molecular weight polyethylene thin-wall pipe, and method of and apparatus for manufacturing the same A method of manufacture of an ultra-high molecular weight polyethylene thin-wall pipe which is uniform in thickness and free from a folded mark. The ultra-high molecular weight polyethylene thin-wall pipe is manufactured by supplying ultra-high molecular ... | 03/01/1994 |
| 5246641 | Method for lining a pipe with a cement mortar An improved method for lining a section of pipe with a cement mortar. After a wet cement mortar has been applied to a cleaned interior surface of a pipe, carbon dioxide is introduced into the freshly lined section of the pipe in such quantity that a crust... | 09/21/1993 |
| 5230842 | Interior pipeline coating process To rehabilitate an internally corroded underground pipeline, excavations are made at its opposite ends to which launching and receiving pipe structures are then secured. Various pig member sets, with appropriate treatment fluids carried thereby, are air-d... | 07/27/1993 |
| 5156785 | Extruded tubing and catheters having increased rotational stiffness Extruded catheters and other flexible plastic tubing may be manufactured with improved rotational and/or longitudinal stiffness, compared with catheters made of more conventional plastics. A tubing of liquid crystal polymer plastic-containing material may... | 10/20/1992 |
| 5132066 | Method of forming a bio-compatible vascular prosthesis A method of forming a bio-compatible vascular prosthesis comprising making a polymer material by coagulation in which the polymer, dissolved in an organic solvent, is formed into the material in a coagulant, the method being carried out at such low temper... | 07/21/1992 |
| 5080571 | Packerhead assembly A packerhead assembly for use in making concrete pipes. The packerhead assembly includes a rollerplate with rollers mounted thereto, and a long segmented longbottom assembly comprised of two substantially identical troweling members, one of which is inver... | 01/14/1992 |