The patent badge is an abbreviated version of the USPTO patent document. The patent badge does contain a link to the full patent document.
The patent badge is an abbreviated version of the USPTO patent document. The patent badge covers the following: Patent number, Date patent was issued, Date patent was filed, Title of the patent, Applicant, Inventor, Assignee, Attorney firm, Primary examiner, Assistant examiner, CPCs, and Abstract. The patent badge does contain a link to the full patent document (in Adobe Acrobat format, aka pdf). To download or print any patent click here.
Patent No.:
Date of Patent:
Apr. 08, 2025
Filed:
May. 04, 2021
Bvw Holding Ag, Cham, CH;
Michael Milbocker, Holliston, MA (US);
Lukas Bluecher, Eurasberg, DE;
BVW Holding AG, Cham, CH;
Abstract
The present disclosure provides microstructured hydrophobic surfaces and devices for gripping wet deformable surfaces. The surfaces and devices disclosed herein utilize a split contact Wenzel-Cassie mechanism to develop multi-level Wenzel-Cassie structures. The Wenzel-Cassie structures are separated with a spatial period corresponding to at least one wrinkle eigenmode of a wet deformable surface to which the microstructure or device is designed to contact, allowing grip of the deformable surface without slippage. Microstructures of the present invention are specifically designed to prevent the formation of Shallamach waves when a shear force is applied to a deformable surface. The multi-level Wenzel-Cassie states of the present disclosure develop temporally, and accordingly are characterized by hierarchical fluid pinning, both in the instance of slippage, and more importantly in the instance of localization. This temporal aspect to the multi-level Wenzel-Cassie state delays or prevents the transition from a wrinkled eigenmode state in a deformable surface to a buckled state in a deformable surface.