Microstructured high friction surface for high friction to fabric, yarn and fibers
AssigneeHoowaki, LLC
InventorsRalph A. Hulseman, Sarah Hulseman
Life of this patent
Estimating the term…
Abstract
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.
Claims21
A fabric contact surface on an article for manipulating fabric comprising:
- a contact surface;
- a microstructure included on the contact surface having a plurality of pillars spaced apart between 200 μm and 600 μm, having a height between 50 μm and 1200 μm, a width of between 70 μm and 300 μm, a wall draft angle between 0° and 15°, a density of between 5,000 to 20,000 pillars per square inch, and a friction rating greater than 7.
A fabric contact surface on an article for manipulating fabric comprising:
- a contact surface;
- and,
- a microstructure included on the contact surface having a plurality of pillars 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 in the range of 0° and 15°, and a friction rating of 7 or greater against a fabric taken from the group consisting of cotton knit or polyester fabric.
A fabric contact surface on an article for manipulating fabric comprising:
- a microstructure disposed on a contact surface wherein the contact surface is a surface on an article taken from the group consisting of:
- sewing feed dog, glove, grip, handle, strap, hand rail, tool, and sporting goods;
- and,
- a plurality of pillars included in the microstructure wherein the pillars have an area in the range of 63 cm2 and 242 cm2 and a pitch in the range of 200 μm and 600 μm.
Dependencies are inferred from the claim text.