US 12,220,050 B2
Blow-molded rib structure
Chen-Kang Lin, DongGuan (CN)
Assigned to Dongguan Shichang Metals Factory Ltd., DongGuan (CN)
Filed by Dongguan Shichang Metals Factory Ltd., DongGuan (CN)
Filed on Mar. 19, 2021, as Appl. No. 17/206,546.
Application 17/206,546 is a continuation of application No. 15/972,375, filed on May 7, 2018, granted, now 11,026,504.
Prior Publication US 2021/0204686 A1, Jul. 8, 2021
This patent is subject to a terminal disclaimer.
Int. Cl. A47B 13/08 (2006.01); A47B 96/20 (2006.01); B29C 49/00 (2006.01); B29L 31/44 (2006.01)
CPC A47B 13/08 (2013.01) [A47B 96/20 (2013.01); B29C 49/00 (2013.01); B29L 2031/448 (2013.01)] 15 Claims
OG exemplary drawing
 
1. A blow-molded structural panel comprising:
a panel surface; and
a blow-molded stiffening rib structure formed integrally with and extending outward from the panel surface, the stiffening rib structure comprising:
a first tall portion having a first tall portion height and a first tall portion width;
a second tall portion having a second tall portion height and a second tall portion width,
wherein the first and second tall portions have a tall portion thickness; and
one or more short portions disposed between the first tall portion and the second tall portion, the one or more short portions having a short portion height that is less than the first tall portion height and less than the second tall portion height, and having a short portion width that is greater than the first tall portion width and greater than the second tall portion width, and having a short portion thickness that is greater than the tall portion thickness.