US 11,858,738 B2
Apparatus for retrieving units from a storage system
Lars Sverker Ture Lindbo, Harpenden (GB); and Robert Rolf Stadie, Eversley (GB)
Assigned to OCADO INNOVATION LIMITED, Hatfield (GB)
Filed by OCADO INNOVATION LIMITED, Hatfield (GB)
Filed on Apr. 19, 2023, as Appl. No. 18/303,520.
Application 16/902,459 is a division of application No. 15/905,360, filed on Feb. 26, 2018, granted, now 10,829,302, issued on Nov. 10, 2020.
Application 18/303,520 is a continuation of application No. 17/078,689, filed on Oct. 23, 2020.
Application 17/078,689 is a continuation of application No. 16/902,459, filed on Jun. 16, 2020, granted, now 10,913,602, issued on Feb. 9, 2021.
Application 15/905,360 is a continuation of application No. 14/910,858, granted, now 10,000,337, issued on Jun. 19, 2018, previously published as PCT/GB2014/052273, filed on Jul. 24, 2014.
Application 15/905,360 is a continuation of application No. 18/303,520.
Application 18/303,520 is a continuation in part of application No. 17/073,788, filed on Oct. 19, 2020.
Application 17/073,788 is a continuation of application No. 15/127,308, granted, now 10,836,577, issued on Nov. 17, 2020, previously published as PCT/EP2015/055695, filed on Mar. 18, 2015.
Claims priority of application No. 1314313 (GB), filed on Aug. 9, 2013; and application No. 1404870 (GB), filed on Mar. 18, 2014.
Prior Publication US 2023/0249909 A1, Aug. 10, 2023
Int. Cl. B65G 1/04 (2006.01); B65G 57/03 (2006.01); B65G 59/02 (2006.01)
CPC B65G 1/0464 (2013.01) [B65G 1/0492 (2013.01); B65G 57/03 (2013.01); B65G 59/02 (2013.01)] 30 Claims
OG exemplary drawing
 
1. A grid frame for a storage system, the grid frame comprising:
a top level comprising:
a plurality of X-direction rails configured to engage a first pair of wheels and a second pair of wheels of a load handling device to guide movement of the load handling device in an X-direction along the top level, the plurality of X-direction rails comprising a first X-direction rail and a second X-direction rail; and
a plurality of Y-direction rails perpendicular to the plurality of X-direction rails and configured to engage a third pair of wheels and a fourth pair of wheels of the load handling device to guide movement of the load handling device in a Y-direction perpendicular to the X-direction along the top level, the plurality of Y-direction rails comprising a first Y-direction rail and a second Y-direction rail; and
a three-dimensional storage structure configured to store stacks of containers beneath the top level,
wherein:
the first X-direction rail, the second X-direction rail, the first Y-direction rail, and the second Y-direction rail define an opening above one of the stacks of containers,
the first X-direction rail has a first X-direction divider that extends in the X-direction and protrudes from the first X-direction rail to divide the first X-direction rail along a center of the first X-direction rail into a first part for travel on by the first pair of wheels and a second part, and
the first Y-direction rail has a first Y-direction divider that extends in the Y-direction and protrudes from the first Y-direction rail to divide the first Y-direction rail along a center of the first Y-direction rail into a first part for travel on by the third pair of wheels and a second part.