Drag reduction article
AssigneeMinnesota Mining and Manufacturing Company
InventorsFrancis J. Marentic, Terry L. Morris
Life of this patent
Estimating the term…
Abstract
A conformable drag reduction article is provided having a patterned surface capable of reducing drag resistance by fluid flowing thereover.
Claims17
An article capable of reducing the resistance to drag of a fluid flowing thereover, said article comprising a thermoset polymeric sheet formed in situ from the reaction product of an isocyanate with a polyol, said sheet having a first surface contacting said fluid, said first surface comprising a series of parallel peaks separated from one another by a series of parallel valleys.
An article which, when applied to a substrate, reduces the drag caused when a fluid flows over the substrate, the article comprising
- a crosslinked, thermoset polymeric body comprising the reaction product of an isocyanate-functional material and a polyol-functional material,
- a patterned first surface on said body comprising a series of parallel, alternating peaks and valleys.
A sheet comprising a radiation-cured, thermoset polyurethane selected from the group consisting of polyester- and polyether-urethanes, said sheet having a series of parallel, alternating peaks and valleys on one surface thereof, said surface reducing the drag caused by a fluid flowing over a body when said sheet is applied to said body so that said surface contacts said fluid.
Dependencies are inferred from the claim text.