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5248456 |
Method and apparatus for cleaning stereolithographically produced objects
An improved stereolithographic apparatus and method is described. In one embodiment, the improvement includes immersing at least a portion of a part in a volume of a liquid solvent in a vapor...
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5246658 |
Method of manufacturing working glove
A method of manufacturing a open-back type working glove. A fiber-made glove is fitted on a dipping hand block, and same is dipped in a stock solution of a rubber latex composition. After the glove...
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5228938 |
Rubber surface treatment and products derived therefrom
The treatment of an uncured or partially cured rubber surface with a solvent mixture of n-heptane and specified hydrocarbon(s). The treatment is to add building tack. Cured adhesion can also be...
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5226209 |
Method for processing composite water pump seal ring
A composite seal ring has a porous main body and a non-porous insert molded into it. Differential rates of coolant absorption between the porous main body and non-porous insert cause the whole ring...
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5209878 |
Surface resolution in three-dimensional objects by inclusion of thin fill layers
Methods and apparatus for reducing surface discontinuities, resulting from the formation of a three-dimensional object out of a plurality of stacked layers, during layer by layer stereolithographic...
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5200130 |
Method of making polyolefin articles
A generally hydrophobic polyolefin article is provided with a modified surface by contacting said generally hydrophobic polyolefin with a copolymeric material while said polyolefin is at a...
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5188707 |
Process for chemically hardening wood
A method of hardening wood using a pulping agent for the chemical separation of lignin from cellulose in the wood without damage to either component. The pulping agent comprises the reaction...
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5151238 |
Process for producing composite materials
Process for producing a composite material in which a cellulosic substrate is treated with a solution of a polyfunctional isocyanate in an aprotic swelling solvent and the substrate is then...
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5093050 |
Method for producing oriented, discontinuous fiber reinforced composite materials
A novel method for generating orientation of short fibers in the matrix of a composite material allows for production of complex high strength components. With state of the art technologies short...
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5087397 |
Process for forming arcuate sheet rock panels
A process of forming a curved sheet rock panel that can later be used in curved ceiling constructions within buildings. Initially a flat sheet rock panel is soaked with water, and then squeezed to...
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5061521 |
Process for producing modified molded polymer articles
A method for improving the properties of a metathesis polymerized cycloolefin article by treating with molecular halogen in an organic solvent. Degree of treatment can be regulated according to the...
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5061416 |
Process for the manufacture of friable silicon nitride bodies
A friable silicon nitride body is prepared by infiltrating a non-friable silicon nitride body with a fluid which expands upon freezing, rapidly freezing the fluid, and thawing the frozen fluid....
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5026511 |
Process for the production of polyethylene materials
A process for producing a polyethylene material for use in products requiring high mechanical strength and high elastic modulus is disclosed. The process involves the use of a specific class of...
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5011644 |
Process for producing gel fiber
A process for producing a gel fiber comprises a step (N) of spinning a solution containing at least one polymer having at least one monomer unit as a constituent component for a gel to solidify the...
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H000870 |
Solvent welding polybutene-1
A process for solvent welding pure polybutene-1, or blends or copolymer of polytbutene-1 to polybutene-1 where the polybutene-1 items are contacted with a solvent such as methylene chloride,...
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4973441 |
Method of manufacturing a compressibility gradient in paper
The method includes the steps of coating the peripheral surface of a roll with a film of plasticizer. An offset roll disposed adjacent to the roll is rotated such that the roll and the offset roll...
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4938911 |
Process for preparing polyolefin gel articles as well as for preparing herefrom articles having a high tensile strength and modulus
A process is described for the preparation of highly stretchable high-molecular weight polyolefin gel articles and polyolefin gel articles prepared therefrom having combined high tensile strength...
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4931242 |
Method of forming shaped-body to be sintered
A method of forming from a sintering material slurry a shaped-body to be sintered having a complicated configuration. A mold is prepared using frames, a shielding member swollen with a solvent, and...
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4919869 |
Apparatus for and process of treating shrinkable fibers
A process for diffusing and subliming water-soluble and water-insoluble materials into never-dried, shrinkable aromatic polyamide fibers, using steam heated at certain controlled temperatures,...
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4898705 |
Method for producing synthetic resin union joint
A method for producing a synthetic resin union joint, the method including the steps of forming a union nut having a screw portion and a union sleeve of an elastically softenable material, the...
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4889579 |
Process for adhering aramid polymers
This invention concerns a method for adhering aramid polymers by treating them with strong base to create anionic sites on the polymer surface. Subsequent reprotonation adheres contacting aramid...
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4883618 |
Absorbable nerve repair device and method
Medical devices for the sutureless repair of lacerated, severed, or grafted nerves comprising longitudinally-openable, porous, rough-surfaced tubes of a body-absorbable polymer are disclosed. The...
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4858293 |
Method of forming a bearing by dimensional recovery of a race or rolling element
The invention relates to novel bearings and methods for making bearings. The method comprises dimensionally recovering at least one race or rolling or sliding element such that a rolling element is...
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4822544 |
Dry process for fabricating a unitary membrane-electrode structure
A process for fabricating a unitary membrane-electrode structure by attaching an electrode to a permselective membrane while the latter is in a non-hydrated (and essentially non-dissociated) form....
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4810455 |
Balloon catheter
A balloon catheter having a distal ballon, and a catheter extending from the proximal end of the balloon, out of the body, forming a conduit for ballon inflation fluid, is sized and adapted, with...
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4808365 |
Method for reducing edge curl on green sheets
A process for reducing edge curl in green sheets in which the sheets are first placed in a chamber at about 95% relative humidity for a period of about 2 weeks at room temperature. In this part of...
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4786446 |
Process of forming a hydroxy-substitute polymeric shaped article
A process for preparing shaped articles and shaped hydrogel articles including ophthalmic devices comprises the steps of preparing a polymer or copolymer comprising units derived from an...
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4766200 |
Process for improving the melt flow index of thermoplastic polymers
A novel process for providing a thermoplastic polymer having unique thermal characteristics including the step of cooling the polymer during extended mastication until the melt index of the polymer...
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4764320 |
Method for preparing semipermeable membrane compositions
Semipermeable membranes with improved permeation flux are prepared by contacting a glassy polymer in the form of a hollow fiber or film with a solvent in which the polymer swells at conditions...
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4762580 |
Optical fibre splice reinstatement sheathing
A circularly symmetric reinstatement sheathed optical fibre splice butt joining the ends of two acrylate sheathed glass optical fibres is made by a method that includes the step of immersing the...
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4755335 |
Method of improving impregnation of poly (meta-phenylene isophthalamide) fibers
A process for diffusing and subliming water-soluble and water-insoluble materials into never-dried, water-swollen aromatic polyamide fibers, using steam heated at certain temperatures.
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4753760 |
Process for preparing improved pellets of hydrolyzed ethylene-vinyl acetate copolymer
A process for preparing improved pellets of a hydrolyzed ethylene-vinyl acetate copolymer which comprises extruding a methanol or a water-methanol solution including a hydrolyzed ethylene-vinyl...
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4737324 |
Method of forming spark plug boots with radiation cure
A method is shown for forming a spark plug boot having at least one internal shoulder. An outer tube is first formed of an elastomeric material having an internal bore and a selected length. An...
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4710334 |
Method of preparing a template
A method of preparing a template for a product from a sample of the product. The ultimate template is either larger or smaller in size than the sample. Initially, a mixture of liquid rubber and a...
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4675136 |
Process for the connection of optical fibres and connecting devices obtained according to this process
According to the invention, the process consists of using plastics optical fibres obtained by drawing, the introduction of one of the ends of said fibres into recesses formed for this purpose in...
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4668445 |
Process for the production of a multipoint light guide by expansion of fibers in a mold
Process for the production of a multipoint light guide and products obtained according to this process. This process consists of placing in a mold a bundle of plastics optical fibers obtained by...
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4664861 |
Method for making preserved, high moisture, ready-to-stuff food casings
Packaged fibrous and non-fibrous reinforced food casings containing sufficient water that presoaking prior to stuffing can be eliminated. The casings which rely on water as the sole or principal...
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4614634 |
Process for the production of plastic films having improved optical properties
An optically virtually isotropic plastic film, in particular for use in liquid crystal displays, can be produced by a method in which first an optically uniaxial birefringent plastic film is...
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4604255 |
Method for fabricating molded bodies formed at least partially of swelled clay material and apparatus for the performance of the method
With the fabrication method and apparatus for the performance of such method, a blank containing hollow spaces extending between its lower side and its upper side is arranged in a mold closed at...
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4575376 |
Method for increasing the absorbency of cellulosic fibers
Method for increasing the absorbency of cellulosic fibers by a high temperature wet treatment comprising heating the fibers in a water bath at temperatures within the range of about 95° C. to...
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4565666 |
Method of producing combination ion selective sensing electrode
A combination ion sensing and reference electrode and a method for producing it. The electrode is formed of bi-lumen plastic tubing using one lumen as sensing chamber and the other as a reference...
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4550001 |
Process for producing shaped articles having improved surfaces
A process for producing shaped articles having improved surfaces, characterized by subjecting a shaped article of a polymer derived from a monomeric material comprising an acrylate and/or...
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4547414 |
Room temperature shrinkable coating material
A room temperature shrinkable coating material is molded of a high-molecular material, and impregnated with a volatile swelling agent containing one or more of virtually unvolatile aids having a...
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4536536 |
High tenacity, high modulus polyethylene and polypropylene fibers and intermediates therefore
Solutions of ultrahigh molecular weight polymers such as polyethylene in a relatively nonvolatile solvent are extruded through an aperture at constant concentration through the aperture and cooled...
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4529563 |
Vaporous solvent treatment of thermoplastic substrates
Disclosed is a method for treating a thermoplastic substrate for improving the surface thereof without significant loss of physical properties. Such method comprises: (a) determining the...
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4519973 |
Ion selective membranes for use in ion sensing electrodes
An improved method for producing ion-selective membranes having a desired shape and of a desired plastic, for incorporation in ion-sensing electrodes, and the electrodes incorporating these...
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4512947 |
Method and apparatus for applying solvent to tubing, other cylindrical objects or other flexible material
The present invention relates to an improved method and apparatus for applying solvent to an object for the purpose of solvent bonding the object to another object. The present invention is...
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4496512 |
Method for making an ion-sensitive capillary electrode
Method for making an electrode having an axial capillary bore with an intersecting bore. An extensible tube is inserted in the axial bore and a polymerizable mixture is inserted in the intersecting...
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4486374 |
Process for softening an absorbent laminate
Laminates of film of a hydrophilic polymer and adhered substrates are softened by applying a nonvolatile aliphatic compound to at least one surface.
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4472220 |
Textile detexturizing system
In order to produce random changes in texture of pile fabrics, continuous multifilament bulked yarn is treated to detexturize spaced portions along its length.
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