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Class 264/312 - Inner relatively rotating member to form hollow article


Subclass of Class 264 - Plastic and nonmetallic article shaping or treating: processes
Definition: Processes in which a recess is formed, enlarged or maintained
No. of patents: 99
Last issue date: 07/08/2008


1      
NumberTitleIssue Date
7396881Polyethylene 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
7316366Compact 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
7118700Method 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
7097802Disposable 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
7094169Rotary 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
7074468Fuel 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
7004415Compact 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
6984118Method 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
6969741Polyethylene 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
6902695Stabilizer 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
6852271Flexible 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
6756007Method 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
6713009Method 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
6632902Process 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
6500375Fabrication 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
6444733Stabilizer 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
6370916Flare 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
6350337Method 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
6258453Thermoplastic 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
6132668Biaxially 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
5874032Method 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
5824254Process 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
5804125Process 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
5798072Process 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
5753159Injection 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
5639409Method 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
5616351Compaction 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
5571541Device 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
5505887Extrusion 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
5456590Counter-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
5366676Method 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
5364578Combination 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
5346663Method 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
5292472Coextrusion 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
5290498Ultra-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
5246641Method 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
5230842Interior 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
5156785Extruded 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
5132066Method 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
5080571Packerhead 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
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