Hoowaki, LLC Patent applications |
Patent application number | Title | Published |
20150368838 | MICROSTRUCTURED HIGH FRICTION SURFACE FOR HIGH FRICTION TO FABRIC, YARN AND FIBERS - This invention is directed to an improved contact surface for manipulating fabrics wherein the microstructure included on the contact surface having a plurality of pillars spaced apart in the range of 200 μm and 600 μm, having a height in the range of 50 μm and 1200 μm, a width of in the range of 70 μm and 300 μm, a wall draft angle between 0° and 15°, a density of in the range of 5,000 to 20,000 pillars per square inch, and a friction rating greater than 7. The contact surface can be included on a sewing machine feed dog, a glove, sporting equipment, firearm grip, hand rail, tools, and a strap such as for a satchel or backpack. | 12-24-2015 |
20150328815 | System and Method For Extruding Parts Having Microstructures - This invention is directed to a microstructured filament that can be used to make fibers having an extruded filament having pre-cooled microfeatures in a radial spiral arrangement about a bore though the filament wherein the microfeature has a width in the range of 25 μm to 40 μm and height in the range of 90 μm to 100 μm; and, the filament having a post-cooled state having post-cooled microfeatures having physical dimensions smaller than that of the pre-cooled microfeatures. The filament can include microfeatures having a width in the range of 400 nm to 4 μm and height in the range of 400 nm to 4 μm. The filament and fiber can include physical characteristics selected from the group consisting of: hydrophobicity, self-cleaning, increased hydro-dynamic drag coefficients, decreased or increased aerodynamic drag coefficients, increased friction, reduced friction, optical effects, increased adhesion, decreased adhesion, oleophobicity, tactile effects, anti-blocking and any combination of these. | 11-19-2015 |
20150298379 | System and Method For Extruding Parts Having Microstructures - A manufacturing apparatus for manufacturing extruded parts having microstructures comprising: a support structure; a hopper carried by the support structure for receiving feedstock; an extrusion chamber operatively associated with the hopper for receiving the feedstock from the hopper and melting the feedstock above a feedstock melting temperature; a die carried by the support structure having die microstructures disposed on an inner surface of the die, the die microstructures having a plurality of microfeatures each having an upper surface and a lower surface, the melted feedstock being forced through the die to produce an extrudate having extrudate microstructures; and, a cooling assembly wherein the extrudate microstructures of the pre-cooled extrudate have larger physical dimensions than that of the extrudate microstructures of the cooled extrudate. | 10-22-2015 |
20150298378 | System and Method For Extruding Parts Having Microstructures - A manufacturing apparatus for manufacturing extruded parts having microstructures comprising: a support structure; a hopper carried by the support structure for receiving feedstock; an extrusion chamber operatively associated with the hopper for receiving the feedstock from the hopper and melting the feedstock above a feedstock melting temperature; a die carried by the support structure having die microstructures disposed on an inner surface of the die, the die microstructures having a plurality of microfeatures each having an upper surface and a lower surface, the melted feedstock being forced through the die to produce an extrudate having extrudate microstructures; and, a cooling assembly wherein the extrudate microstructures of the pre-cooled extrudate have larger physical dimensions than that of the extrudate microstructures of the cooled extrudate. | 10-22-2015 |
20110311764 | MULTI-SCALE, MULTI-FUNCTIONAL MICROSTRUCTURED MATERIAL - A microstructure disposed on a surface carried by an object comprising: a first set of microfeatures carried by the object wherein said first set of microfeatures causes the surface of the object to exhibit physical properties differing from physical properties exhibited by a non-microstructured surface; and, a second set of microfeatures carried by said surface wherein said second set of microfeatures causes the surface of the object to exhibit physical properties differing from physical properties exhibited by the non-microstructured surface and by said first set of microfeatures. | 12-22-2011 |
20110266724 | METHOD FOR MANUFACTURING MICROSTRUCTURED METAL OR CERAMIC PARTS FROM FEEDSTOCK - A method of manufacturing a production part having microstructured features comprising the steps of fabricating a microstructured prototype having microstructured features, manufacturing a microstructured intermediate from the microstructured prototype so that the microstructured intermediate carries a negative of the microstructured features, attaching the microstructured intermediate to a manufacturing tool thereby providing microstructured features on a manufacturing tool, providing feedstock containing material from the group comprising of: metal, ceramic, binder, and any combination of these and manufacturing the production part from the feedstock, using the manufacturing tool and using a process from the group consisting of: compression molding, roll forming, stamping, embossing, extrusion injection molding, and any combination of these. | 11-03-2011 |
20110089604 | METHOD OF MANUFACTURING PRODUCTS HAVING A METAL SURFACE - The method for manufacturing products having a metal surface by imparting microfeatures onto the metal surface. The method if further described as the steps of: creating a transfer tool from a microstructured intermediate fabricated from a microstructured prototype having microfeatures; and, transferring the microfeatures to said metal surface using the transfer tool. | 04-21-2011 |
20100319183 | METHOD FOR MAKING MICROSTRUCTURED OBJECTS - Described herein are casting and molding methods useful for making microstructured objects. By including a plurality of microfeatures on the surface of an object, other characteristics may be imparted to the object, such as increased hydrophobicity. Some of the casting and molding methods described herein further allow for manufacture of objects having both microfeatures and macro features, for example microfeatures on or within macro features or selected macro feature regions. | 12-23-2010 |