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4733452 |
Production of jackets for flexible magnetic disks, and apparatus for this purpose
The jacket blanks punched out from a film web are folded to give jackets and then closed by spot welding with the aid of a wavy resistance belt, the welding temperature being produced for a short...
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4732714 |
Method and apparatus for centrifugal casting of contact lenses in open molds
According to the method of the invention, molds charged with a monomer mixture are arranged into columns with precisely coaxial casting surfaces inside these columns, namely, in tubes of cylindric...
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4728469 |
Method and apparatus for making a plastic lens
A method and apparatus for making a plastic lens and a plastic lens made thereby are provided, the method comprising the steps of disposing a lens forming material comprising a liquid monomer and a...
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4724107 |
Continuous vulcanized assembly process and apparatus
A continuous vulcanized assembly process for producing an anti-fouling material comprises cleaning the surface of a sheet of copper alloy anti-fouling material by shotblasting, use of a rotary...
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4721448 |
Pelletizer with moisture control system
A moisture control system is provided for a pelletizing process wherein the moisture content of the pellets leaving the pelletizing process is constantly monitored and differences between the...
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4710330 |
Application of the laser jet method for inscribing office machine keyboard buttons
A process for inscription of parts from plastic material whose color can be changed through the effect of an energy radiation used for providing alphanumeric characters or other symbols on the key...
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4705658 |
Method for drying gelatin in the manufacture of hard shell gelatin capsules
A method and apparatus for drying gelatin in the manufacture of hard shell gelatin capsules. Pins on pin bars are dipped into the liquid gelatin and the pins are then irradiated with microwave...
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4701288 |
Method of making articles of dissimilar polymer compositions
Hybrid contact lenses and other composite polymeric articles of precise dimensions are made by placing a first monomer composition in a mold and irradiating and polymerizing a central portion only...
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4692080 |
Self drilling fasteners and process for making the same
A process for making self-drilling, screw fasteners having improved corrosion resistance. The process comprises applying a frangible radiation curable plastic coating over the drill tip corrosion...
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4678422 |
Systems and methods for precise, accurate formation of products by photoablation
A system for photoablating a product blank such as a corneal lenticule includes a molding means having a predetermined size and shape to which the finished, molded product should conform. The...
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4671757 |
Microwave heating in a pellet mill
A system for adding heat to dry material as it is conditioned in preparation for pelleting in a pellet mill includes a plurality of groups of microwave magnetrons and a control system to control...
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4665101 |
Method for the continuous, dry, non-pressurized regeneration of salvaged rubber
Comminuted salvaged rubber is heated to the reclaiming temperature in a two-stage process such that part of the overall heat required is introduced by microwave heating and the remainder by...
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4665306 |
Apparatus for activating heat shrinkable ribbon on disposable garments and other articles
Apparatus for activating heat shrinkable ribbon on disposable garments and other articles in which the ribbon is absorbent of electromagnetic radiation and is bombarded by infrared rays for a time...
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4657714 |
Method and press molding apparatus for forming information carrier discs of granular thermoplastic material
A press molding apparatus and its method of operation for making an information carrier disc which comprises the steps of maintaining a mass of granular transparent synthetic material in a vacuum,...
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4634840 |
Method of heating thermoplastic resin sheet or film
A broad and continuous sheet or film is uniformly heated in a highly precise manner and with a specific heat profile by using a plurality of radiation heating furnaces, wherein in the interior of...
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4624810 |
Production of a solid stick in a container
A solid stick composition, in a container, is moved through a protective tunnel wherein the stick is cooled to effect solidification, remelted to fill any void in the stick, cooled to solidify, and...
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4612444 |
Apparatus for curing bonding material of artificial nail tips
A cosmetic apparatus is disclosed for curing an ultravoilet sensitive coating and bonding material applied to the surface of a person's fingernail optionally including an artificial nail tip...
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4606723 |
Method and apparatus for heating thermoplastic bottle preforms
Thermoplastic preforms are heated in preparation for the blow molding of bottles therefrom in a tunnel (1) provided with infra-red radiators (13). Supports (19) for the preforms (17) move along the...
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4600375 |
Injection apparatus including means for feeding solid resin to an injection means and radiant heating means to melt the resin
The injection machine according to the present invention has an infrared ray heater disposed outside a transparent glass tube cylinder a reflector disposed outside the infrared ray heater, an...
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4595543 |
Method of forming photopolymeric molding pattern
A novel molding pattern and method of making the same comprises the use of first and second image negatives sequentially positioned on opposed sides of a light sensitive resinous mass. Ultraviolet...
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4594204 |
Process for annealing thermoplastically-shaped plastics parts
The present invention reduces within a short period of time the internal stresses in plastics bottles by annealing with infra-red radiation, in particular by specifically exposing critical points...
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4587066 |
Method and apparatus for forming magnetic recording media
A method of and apparatus for producing magnetic media are disclosed. Magnetic particles in a magnetic layer are oriented under the influence of a magnetic field positioned on one side of the layer...
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4575329 |
Electrode element for corona treater
A corona treater includes an active electrode which has one or more insulated electrode elements slidably supported by an insulating track. A contact spring connects each electrode element to a...
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4569806 |
Method and device for manufacturing an information carrier of a synthetic material having a laminated structure
A method and a device for manufacturing an information carrier of synthetic material having a laminated structure, in which a transparent carrier is provided away from the mould with a resin layer...
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4568262 |
Apparatus for the manufacture of contact lenses using microwave energy
The invention concerns a method and an apparatus for manufacturing a contact lens, through molding within water-tight molds. The polymerization of lenses is insured by arranging a number of molds...
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4534915 |
Method of controlling the ultraviolet polymerization of spin cast lenses
A method of controlling the polymerization of spin cast hydrogel contact lenses by controlling the shape of the ultraviolet light beam across the rotating surface of the spin cast lens. To provide...
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4533523 |
Corona treater for plastic film
A corona treater includes an active electrode which has one or more insulated electrode elements slidably supported by an insulating track. A contact spring connects each electrode element to a...
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4526732 |
Method of heating thermal shrinkage tube and apparatus therefor
A heating apparatus for thermally shrinkable tubes and the like has a heating density gradient such that a higher temperature is imparted initially to a central portion of the heated tube,...
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4512942 |
Method and apparatus for vulcanizing hose
The vulcanizing of elastomeric articles by captively securing the article to be cured under pressure by a mold that is transparent to microwave energy. The mold in the preferred embodiment is a...
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4512940 |
Method and apparatus for the production of electret material
An electret material is formed by the method which includes the step of passing a pair of electrical conductor elements along the surface of a dielectric material heated to a predetermined...
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4506144 |
Control for radiant heating
A control for the heating section of a blow-molding machine is provided. The control permits independent selection of periods for high and low power energization of each radiant heating element of...
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4486363 |
Method and apparatus for embossing a precision optical pattern in a resinous sheet
Disclosed herein are a method and apparatus for continuously embossing a repeating pattern of precise detail, in particular, cube-corner type reflector elements, on one surface of a sheet of...
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4480984 |
Apparatus for heat-shrinking thermoplastic sleeves about glass containers
Apparatus for accepting preheated or ambient containers in single file to an eighteen-head handling turret that will carry the containers through a generally circular path by their necks. The...
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4472124 |
Device for producing an information recording disk
A device for producing information recording disks comprises a stamper mount for placing a stamper thereon, a stamper-fixing shaft for fixing the stamper, and a pressing plate for pressing a...
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4465448 |
Apparatus for making shoes
A method and apparatus for making shoes of the type comprising an injection molded sole which is bonded to a marginal edge portion of a string lasting preferably made of a thermoplastic material....
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4458875 |
Easy release mold
The apparatus consists of a vessel that is transparent to microwaves, an inner coating of material that is heated by microwaves and a coating inside that that will reflect microwaves. In use the...
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4449916 |
Device for manufacturing information recording mediums
Provided is an information recording medium manufacturing device of the type in which a radiation curable layer-forming liquid resin is injected into a gap between a planar stamper carrying an...
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4444700 |
Method for manufacturing reinforced hose
An improved method for producing a reinforced hose. A tubular core is extruded and then heated in a microwave oven to at least partially cure the core. While the core is still hot, a powdered...
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4443399 |
Method of producing biaxially oriented sheet or film and apparatus therefor
A method of producing a biaxially oriented sheet or film, wherein molten resin is simultaneously, biaxially oriented in a direction of extruding the molten resin and in a direction perpendicular...
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4443679 |
Induction furnace for heat shrinking thermoplastic sheet onto mandrels in a forming process
An induction furnace utilizes a channel-shaped induction coil disposed along a mandrel movement line within a cup-making machine to produce eddy currents within a conductive grid arranged...
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4438053 |
Making a fibrillated synthetic-resin strand
A fibrillated strand is made by a method wherein first a mass of a powder of a high polymer is compressed into a substrate having a density smaller than that of the high polymer and having a...
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4427638 |
Apparatus for semiconductor ribbon-to-ribbon conversion
Apparatus is provided for semiconductor ribbon-to-ribbon conversion in a rigid edge mode. A combination carrier and mask is provided by which the ribbon is secured during the conversion process....
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4407646 |
Apparatus for making video discs
An apparatus for making video discs by moulding from an engraved master which includes depositing on one edge of the master an elongated fillet of a curable resin; photopolymerizable or...
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4402888 |
Corona discharge treatment roll
The present invention relates to improvements in treatment rolls for the corona discharge treatment of polymeric films whereby the same are rendered receptive to printing inks and the like. More...
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4395211 |
Method and device for manufacturing a plastic record carrier
A method and device for manufacturing a record carrier is disclosed in which a liquid moulding resin is deposited in a cavity formed in the surface of a mould which also has at least one data...
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4391764 |
Method of manufacture of identical parts displaying different indicia
A method of manufacturing plastic parts which are otherwise identical but which display different indicia such as typewriter keys which comprises the steps of injection molding a plurality of...
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4373891 |
Apparatus for cooling a transfer mandrel
An apparatus for cooling a transfer mandrel on whose top portion a thermoplastic resin parison is mounted and which is rotatably engaged with the peripheral portion of a rotary table. The apparatus...
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4344749 |
Injection stretch-blow molding apparatus for the manufacture of biaxially oriented hollow bodies from thermoplastic material
An injection stretch-blow molding apparatus is disclosed. The apparatus includes at least two preform conditioning stations, a molding injection station for initially molding the preform and a blow...
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4332538 |
Dough divider
Dough which is to be formed into small volumes for later baking into bread, etc. is moved from a mass of dough in the lower portion of a hopper by a pair of helical screws, through a conduit, first...
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4329135 |
Device for the continuous thermal or thermo-chemical treatment of objects by emission of micro-waves
This device comprises an applicator in which the micro-waves are generated. Inside this applicator is disposed a tubular enclosure, preferably coaxial, made from a material inert to the micro-waves...
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