Anthony A Swanson

US Patent:

20100092796, Apr 15, 2010

Filed:

Oct 6, 2009

Appl. No.:

12/587408

Inventors:

Jian Cao - Wilmette IL, US
Anthony Swanson - Chicago IL, US
Tiffany Davis - Chicago IL, US

International Classification:

B32B 3/30
B21D 31/00
B21D 5/02
B29C 59/02
B32B 15/01

US Classification:

428600, 723792, 72380, 264293, 428156, 425470

Abstract:

Method of forming depressions (e.g. dimples) in a sheet material to form a textured surface thereon involves pressing one or more tool tips into a metallic or non-metallic sheet material while the sheet material is supported by a support layer that is relatively softer (e.g. having a lower Young's modulus) than the sheet material so as to allow plastic deformation and reduce pile-up of raised displaced material of the sheet material at the edges of the depressions.