US 11,937,696 B2
Blow-molded unitary structure with enhanced strength
Kwan Jun Choi, Xiamen (CN)
Assigned to Inno-Sports Co., Ltd., Xiamen (CN)
Filed by Inno-Sports Co., Ltd., Xiamen (CN)
Filed on Jan. 19, 2023, as Appl. No. 18/156,659.
Application 18/156,659 is a continuation of application No. 17/856,845, filed on Jul. 1, 2022, granted, now 11,564,494.
Application 17/856,845 is a continuation of application No. 17/368,469, filed on Jul. 6, 2021, granted, now 11,564,492.
Claims priority of application No. 202021507901.7 (CN), filed on Jul. 27, 2020; application No. 202021508027.9 (CN), filed on Jul. 27, 2020; application No. 202021508934.3 (CN), filed on Jul. 27, 2020; and application No. 202121253741.2 (CN), filed on Jun. 2, 2021.
Prior Publication US 2023/0225510 A1, Jul. 20, 2023
This patent is subject to a terminal disclaimer.
Int. Cl. A47B 96/20 (2006.01); A47B 96/18 (2006.01); B29C 49/20 (2006.01)
CPC A47B 96/20 (2013.01) [A47B 96/18 (2013.01); B29C 49/20 (2013.01)] 20 Claims
OG exemplary drawing
 
1. A blow-molded unitary structure comprising:
a panel comprising a first panel wall and a second panel wall spaced apart from the first panel wall;
a plurality of first depressions monolithically formed with the panel, each recessing from the second panel wall toward an interior of the panel;
a plurality of first protrusions monolithically formed with the panel, each protruding from the second panel wall toward an exterior of the panel and elongated in a first direction; and
a plurality of second protrusions monolithically formed with the panel, each protruding from the second panel wall toward an exterior of the panel and elongated in a second direction;
wherein:
at least a subset of the plurality of first depressions is arranged into a plurality of depression rows in the first direction and a plurality of depression columns in the second direction across at least a portion of the panel;
first protrusions in at least a subset of the plurality of first protrusions are arranged alternatively with depression rows in at least a subset of the plurality of depression rows;
second protrusions in at least a subset of the plurality of second protrusions are arranged alternatively with depression columns in at least a subset of the plurality of depression columns;
the first protrusions in the subset of the plurality of first protrusions and the second protrusions in the subset of the plurality of second protrusions cross each other, thereby creating a panel wall opposite to the first panel wall with respect to the second panel wall to enhance a strength of the blow-molded unitary structure.