Load bearing structure
AssigneeLesweek Pty Ltd
InventorsStephen Weeks, Chi Kong Lin
Life of this patent
Estimating the term…
Abstract
The present disclosure provides a movable load bearing structure having a light weight core covered with at least one polymeric sheet for improving its loading bearing strength. The movable load bearing structure includes indentations, grooves, valleys, channels or other similar depressions on its underside. These depressions are mated with corresponding features for improved loading bearing capabilities. The load bearing structures also includes roughened side edges for improving the strength of the edges. The movable structure may be in the form of a dunnage platform or a container for storing and/or shipping cargo.
Claims21
A loading bearing structure comprising:
- a polymeric core having a top side, a bottom side and a width having a thickness therebetween joining the top side and the bottom side, said bottom side comprising at least one depression extending substantially the length or breadth of the bottom side, said at least one depression comprises a single depression, a group of closely spaced depressions or combinations thereof;
- at least one corresponding feature mated with one of the at least one depression to substantially fill said depression, said corresponding feature comprising at least one raised portion, and two flat side portions extending from both sides of the raised portion;
- at least one polymeric sheet having a first side with outer edge portions, said first side of said polymeric sheet including the outer edge portions are combined with said bottom side, the width and at least a portion of said top side of said polymeric core.
A loading bearing structure having a top side, a bottom side and a width therebetween, comprising:
- an expanded polymeric core with a top side, a bottom side and a width having a thickness therebetween joining the top side and the bottom side, said bottom side comprising plurality of supports extending orthogonally from the bottom side of the core, and at least one depression extending between adjacent supports and at least one depression extending substantially the length or breadth of the bottom side, said at least one depression comprises a single depression or a group of closely spaced depressions;
- a corresponding feature mated with said at least one of said depressions to substantially fill said depression, said feature having a raised portion with a hollow interior;
- a polymeric sheet having a first side and a second side, with outer edges, said first side and its outer edges are combined with said bottom side, said plurality of extensions, and at least part of said thickness of said width of said expanded polymer core, respectively;
- and
- a second polymer sheet having a first side and a second side, with outer edges, said second side and its outer edges are combined with said expanded polymer core on said top side and at least part of the thickness of the width of said expanded polymer core, respectively, forming an overlap between said outer edges of said first sheet and said outer edges of said second sheet about the width.
A load bearing structure for loading, transporting or storing cargo, comprising:
- an expanded polymeric core having a top side, a bottom side and a width having a thickness therebetween joining the top side and the bottom side, and a plurality of supports extending orthogonally from the bottom side of the core, each of said supports comprises a solid or partially hollow interior;
- at least two substantially parallel, spaced apart depressions extending substantially the length or breadth of the bottom side of the core, said long depressions mating with corresponding features to substantially fill said depressions;
- a first polymeric sheet having a first side and a second side, with outer edge portions, said first side of said polymeric sheet including the outer edge portions are combined with said bottom side, said plurality of supports, and at least a portion of said width of said polymeric core;
- and
- a second polymeric sheet having a first side and a second side, with outer edge portions, said second side and its outer edge portions are combined with said expanded polymer core on said top side and at least part of the width of said expanded polymer core, wherein said outer edge portions of said first sheet overlaps said outer edge portions of said second sheet about the width.
Dependencies are inferred from the claim text.