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US 8,470,225 B2Granted
Tray or storage/transport-box floor
AssigneeFritz Schaefer GmbH
InventorsDietheim Hirz, Matthias Jung, Andreas Nieder
Life of this patent
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Abstract
A transport/storage tray is made by injecting molding of plastic an upper floor panel formed with an array of throughgoing holes and a separate lower floor panel with an array of throughgoing holes. Then the upper and lower panels are juxtaposed with each of the holes of the upper panel aligned with a respective one of the holes of the lower panel, and the two panels are welded together.
Claims9
A method of making a tray comprising the steps of:
- injecting molding a plastic first floor panel formed with an array of throughgoing holes each defined by a collar projecting from the first panel;
- injection molding a second floor panel with an array of throughgoing holes substantially identical to the array of holes of the first panel;
- juxtaposing the first and second panels with each of the holes of the first panel aligned with a respective one of the holes of the second panel and each of the collars of the first panel engaging the second panel in direct alignment with a respective one of the holes of the second panel;
- and
- welding the two panels together.
2 more elements
A method of making a tray comprising the steps of:
- injecting molding of plastic an upper floor panel formed with an array of throughgoing holes;
- injection molding a lower floor panel with an array of throughgoing holes;
- juxtaposing the upper and lower panels with each of the holes of the upper panel aligned with a respective one of the holes of the lower panel;
- welding the two panels together;
- forming the holes of one of the panels with collars fittable in the holes of the other of the panels;
- and
- fitting the collars of the one panel into the holes of the other panel when juxtaposing the panels.
4 more elements
A method of making a tray comprising the steps of:
- injecting molding of plastic an upper floor panel formed with an array of throughgoing holes;
- injection molding a lower floor panel with an array of throughgoing holes;
- juxtaposing the upper and lower panels with each of the holes of the upper panel aligned with a respective one of the holes of the lower panel;
- welding the two panels together;
- forming at least one opening of one of the panels as a collar projecting toward the other panel and formed with diametrally opposite notches open away from the one panel;
- providing a removable centering cross in the opening of the lower panel;
- and
- using the centering cross for positioning a welding tool.
5 more elements
Dependencies are inferred from the claim text.