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5023042 |
Flexible mold for making seamless sailboards
Sailboards having a tucked rail are made from a flexible, resilient mold so that the seam of the board is along its bottom edge instead of at its point of greatest breadth. A flexible mold part...
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4997606 |
Methods and apparatus for fabricating a high purity thermally-conductive polymer layer
Thermal transfer between a semiconductor wafer and a platen during vacuum processing is provided through a soft, thermally-conductive polymer layer having a thin, hard surface film. The soft...
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4997511 |
Tubular autoclave for curing composite parts
A method and apparatus for mass producing composite products comprising a novel autoclave having a cylindrical vacuum chamber; a cylindrical compression chamber surrounding the vacuum chamber; a...
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4994133 |
Continuous process for producing reinforced resin laminates
A continuous process for producing reinforced resin laminates comprising the steps of impregnating a fibrous substrate with a liquid resin which is free of volatile solvent and is capable of curing...
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4992226 |
Method of making molds with xenogeneic collagen/mineral preparations for bone repair
A process for coating the pores of a mineral matrix with collagen by pumping collagen through the molded matrix is disclosed. The resulting coated matrix can be used as a prosthesis in bone repair.
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4983341 |
Method of using breather materials for high pressure molding
A method of molding using breather layers particularly adapted for use for removing fluids from articles during molding, that retain fluid paths at high pressures. Polymer containing articles are...
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4981634 |
Injection molding process operating without opening the mold to airborne contaminants
An injection molding process creates a micro-cleanroom environment inside a mold cavity which can stay closed to airborne contaminants while ejecting and transferring the molded part out. The...
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4980106 |
Method for dry-pelletizing carbon black and equipment to implement the method
The invention concerns a method for dry-pelletizing carbon black, allowing to control pellet quality and increasing the output of any particular pelletizing apparatus. The method calls for...
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4980001 |
Applying jacket material to corrugated metal shields of telecommunications cable
In a method of applying a jacket to a metal shield of a cable, the jacket comprises a polyolefin having a modifier provided by a carboxylic acid or its anhydride. As the jacket extrudate passes...
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4978487 |
Method of treating a coating on a reactor coolant pump sealing surface
An annular chromium carbide coating on an annular sealing surface of a stainless steel sealing assembly component for use in a nuclear reactor coolant pump, is treated by encasing at least the...
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4973442 |
Forming 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...
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4970033 |
Process for casting tire tread impressions using a photopolymerizable composition as the casting material
Disclosed is an improved process for casting the impression of a tire tread by preparing a negative mold of the tire tread and making a positive cast from the negative mold. The improvement...
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4963307 |
Method for producing a tablet for resin-molding semiconductor devices and resin-molding method making use of the tablet
A resin-molding tablet for use in resin-molding semiconductor devices has a tablet body formed of powdered or particulate resin. The particles of the resin are compacted such as to form voids...
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4961883 |
Glass break repair apparatus valve and method
In the repair of breaks in glass a valve is employed in conjunction with a syringe to accumulate vacuum, apply pressure or accumulate pressure, for more effective, easier and less expensive repair....
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4959186 |
Extrusion process and single-, dual- or multiple-screw extruder
In the case of the extruder, the thread of the screw, or that of the screws, is partly left-handed and partly right-handed, so that one part of the material to be processed is conveyed in direction...
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4957676 |
Detachment of tires from molds
Detaching a cured tire from mold sections of a tire mold during opening of the mold by communicating air under pressure into the space between the mold sections and confining the air in this space...
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4958006 |
Fluidized bed product discharge process
Method and apparatus for the post reaction treatment of resins produced by fluidized bed polymerization of alpha olefins wherein an extruder is coupled in communication with the reactor and all...
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4952672 |
Method for the devolatilization of thermoplastic materials
This invention is a method and an apparatus for rapidly devolatilizing a product of a polymerization process containing at least one volatile material. The product is initially devolatilized in a...
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4952358 |
Method of manufacturing an interior member for vehicles
A method for manufacturing an interior member for vehicles comprises the steps of laying a surface layer in a cavity of a mold, placing a reinforcing fiber mat onto the surface layer, compressing...
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4948537 |
Method of producing a resin mold for rear projection screen
A method of producing a resin mold that includes the steps of pouring a first resin into a metal mold, curing the first resin at a first temperature thereby making an intermediate resin mold made...
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4937414 |
Wire guide for electrical discharge machining apparatus
A wire guide for EDM machining apparatus comprises a vacuum hot pressed titanium diboride block having a groove on a curved side of the block for positioning EDM wire. The block has a mounting hole...
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4934433 |
Devolatilization
The efficiency of falling strand devolatilizers is related to a number of factors incluidng the foaming of the polymer melt and the time the melt in both foam and strand form is held in the...
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4927580 |
Method for manufacturing electronic device including a vibration generating element
A method for manufacturing an electronic device having therein a lead frame and a vibration-generating element integrally provided on the lead frame. The lead frame and the element are first...
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4927600 |
Method for molding of powders
The invention is concerned with the method of compression molding a metallic or ceramic powders. The method includes the step of maintaining a negative pressure within a first mold of...
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4925603 |
Process for the preparation of gel for use as cooling medium
A process for the preparation of a gel for use as a cooling medium is provided which comprises the steps of casting an aqueous solution or suspension containing a polyvinyl alcohol having a degree...
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4923667 |
Method and apparatus for injection moulding
An injection molded plastic article is produced by introducing a stream of molten plastic material from an injection molding machine cylinder into an article forming mold space. Pressurized gas is...
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4919860 |
Manufacture of porous carbon membranes
The invention relates to a process for making porous carbon membranes and membranes which can made by this process. As starting material, a porous membrane from an acrylonitril-polymer is used. The...
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4915896 |
Vacuum bagging process for fiber reinforced thermoplastics
A method of consolidating a fiber reinforced thermoplastic poly(arylene sulfide) composite by vacuum bagging. A fiber reinforced thermoplastic is placed between stainless steel sheets and then...
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4915764 |
Method of making panels
A method for making panels comprises the steps of forming a mixture of thermoplastic resin and organic filler and the plastication of this mixture performed simultaneously with its formation....
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4913864 |
Process for preparation of porous hollow filament
A process for the preparation of a porous hollow filament composed mainly of an organic polymer, which comprises separately feeding a powder of the organic polymer and a liquid additive to a feed...
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4911871 |
Method for effecting an intraoral dental radiographic film packet improvement
A comfort-enhancing improvement upon a known dental film packet having sensitized film and protective opaque sheets enclosed by a light-tight envelope that includes an opposed pair of generally...
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4908168 |
Method for small scale forming of hardenable materials of organic origin
Material is supplied to a mold by direct application of gas pressure to a liquid material. A method for the shaping of at least two different synthetic resinous materials by providing a...
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4906425 |
Methods to obtain corrected impressions of feet so as to produce corrective soles
A method to obtain corrected impressions of the foot so as to produce corrective soles including two or three superimposed rigid frames connected to a supporting structure secured by arms of...
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4904430 |
Method and an apparatus for backing up vehicle mat
A method for backing up vehicle mat comprising the steps of: applying the sol resin to a metal mold which is capable of being heated or cooled; filling the resin applied to the metal mold by...
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4902455 |
Method and extrusion apparatus for degassing thermoplastic plastics material melts
A method of degassing thermoplastic plastic melts over a wide range of viscosities in a degassing extruder including a plurality of sequential degassing sections. Each degassing section includes at...
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4900493 |
Method for producing a synthetic resin skin
A method and apparatus for the production of a synthetic resin skin uses a mold for forming at least two separate skin sections which are then joined prior or after a final heat treatment. The...
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4900494 |
Extrusion method and apparatus
An apparatus including a single screw extruder for extruding a fused molten mass of thermoplastic material and for reverse degassing the melt. The device includes an extrusion screw rotatable in a...
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4897233 |
Method of making reinforced material
The invention relates to a fibre-reinforced thermoplastic semi-finished product includes a thermoplastically processible polymer and long individual reinforcing fibres which form a coherent...
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4892700 |
Process for making multilayered, formable laminates
A process for making a multilayered formable plastic composite laminate and a process for its manufacture which includes preparing an acrylic composition which includes the reaction product of a...
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4883550 |
Method of manufacturing fiber-reinforced articles or plastics material
A method of manufacturing a fiber-reinforced shaped article of plastics material for pipeline systems. The article includes an inner casing of a thermoplastic material and an outer casing of a...
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4879078 |
Process for producing uniaxial polyolefin/filler films for controlled atmosphere packaging
A uniaxially oriented, polyolefin film is prepared by melt blending a mixture of a polyolefin, an inert filler, a processing aid such as calcium stearate, and optionally a stabilizer, maintaining...
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4877595 |
Method of compressing pyrogenically prepared silicic acid
Pyrogenically prepared silicic acid is compressed by a rotary filter equipped with a pressing band.
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4876050 |
Process for dry fiber winding and impregnating of projectiles
A process for dry fiber winding in the absence of resin and subsequent resin impregnating of objects such as projectile bodies having a recessed area for receiving the windings. The process...
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4873040 |
Method for production of piled mats with a rubber backing on a vulcanizing press
Through a method for production of piled mats (1-3) with rubber backing on a vulcanizing press (P) with a stationary vulcanizing heater plate (8) where articles (1-3) to be vulcanized are conveyed...
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4871494 |
Process for forming asymmetric gas separation membranes having graded density skins
A process for forming high free volume, asymmetric gas separation membranes having graded density skins and macrovoid-free morphology from a solvent system comprising a Lewis acid, Lewis base, and...
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4863652 |
Method for manufacturing molded products of polyethylene terephthalate
A method for manufacturing molded products of polyethylene terephthalate by injection molding or extrusion molding a material containing polyethylene terephthalate as the principal component...
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4861534 |
Method and apparatus for the injection molding of circuit boards
A family of circuit boards are molded, each board having its own unique pattern of recessed circuit paths and component insertion through-holes. A different mold is provided for each different...
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4859380 |
Method and apparatus for producing fiber-reinforced rubber hose
Method and apparatus for producing a fiber-reinforced rubber hose having an inner rubber tube, a tubular reinforcing fiber layer, an outer rubber tube, and a resin cover tube, which are formed in...
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4855097 |
Compression molding a charge using vacuum
A method for making a part with a smooth surface, such as an exterior automotive body panel, by compression molding a charge containing a curable resin. The charge is placed on the molding surface...
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4853170 |
Process for producing press molded articles provided with channels from powdery molding compounds
A method for producing press-molded articles having a plurality of cavities therein includes a mold cavity which can be filled with a particulate molding compound, which mold cavity contains rods...
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