Hoowaki, LLC

Sarah Hulseman

Ralph Allen Hulseman

Michael Reynolds

Ernesto Rafael Fonseca

Yinghui Liu

Mauricio Farinas

This invention is directed to an improved contact surface for manipulating articles wherein the microstructure included on the contact surface having a plurality of pillars spaced apart in the range of 200 &#x3bc;m and 600 &#x3bc;m, having a height in the range of 50 &#x3bc;m and 1200 &#x3bc;m, a width of in the range of 70 &#x3bc;m and 300 &#x3bc;m, a wall draft angle between 0&#xb0; and 15&#xb0;, 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, tool grip, tool handle, and a strap such as for a satchel or backpack.

Microstructured high friction surface for high friction to fabric, yarn, and fibers

This invention is a fracturing component and method having a fluid and a plurality of three dimensional structures mixed in the fluid wherein each structure has a longitudinal axis, center of mass and center of pressure wherein the center of mass and the center of pressure do not align in a stable manner causing the structure to flutter in the fluid to reduce the structure from settling out of the fluid when injected into a fissure. Each three dimensional structure can include a first end of the structure having a first plane having an angle of incident &#x3b8;offset from perpendicular to the longitudinal axis and a second end of the structure having a second plane having an angle of incident &#x3b8;offset from perpendicular to the longitudinal axis. The difference between &#x3b8;and &#x3b8;can be in a range of 0&#xb0; to 65&#xb0;.

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Greenville, SC, United States of America

Sarah Hulseman