Patent Application
20080217276
Returnable shipping containers or racks often consist of a base or frame, at least four posts or walls extending upwardly from the frame, and integral packing materials (“dunnage”) for protecting the rack's cargo or products from damage during transport. After the racks have been used to ship a product, they are returned for reuse. To reuse the racks or containers, they must be built from a sturdy, durable material that will withstand the loads from the products as well as the loads from other racks and containers being stacked on top for shipment or storage.
Moreover, to reduce the shipping costs for both product shipment and return of the racks, the racks should incorporate modular standard footprints and load heights allowing for efficient ship densities. Racks should also be stackable in the configuration used for product shipment and return of the racks. Stacking the racks maximizes the space used in transport containers and reduces overall shipping costs.
Returnable racks are typically uniquely designed for each application (i.e. “customized”), placed into service, and then discarded at the end of their intended use. Discarding customized racks is wasteful and inefficient. With the majority of the rack cost contained in the base and end posts, it is cost-effective to reuse the base when building a customized rack. Moreover, integrating new dunnage systems into existing rack bases decreases the costs associated with building a customized rack solution while maintaining the standard modular footprints and design features.
Shipping racks are often designed for use with many different types of dunnage structures and products, and the racks can therefore be used numerous times before being discarded. For instance, the same rack may be configured to receive both instrument panels and windshields depending upon the dunnage design. Therefore, reconfiguring the dunnage on the racks when the rack needs windshield dunnage, rather than instrument panel dunnage, results in a more efficient use of the racks.
Thus, it is desired to have a customizable reusable, stackable rack or container system that optimizes inbound/outboard shipping densities, maximizes asset utilization, and reduces material waste.
A modular, customizable returnable rack system for shipping products is provided. The system includes a plurality of racks, wherein each rack is selectively displaceable between a collapsed position and an upright position. The racks are adapted to be stacked upon one another in either the collapsed or upright position. The system further includes a first removable dunnage structure couplable to a rack and configured to receive a first type of product and a second removable dunnage structure couplable to a rack and configured to receive a second type of product.
This summary is provided to introduce a selection of concepts in a simplified form that are further described below in the Detailed Description. This summary is not intended to identify key features of the claimed subject matter, nor is it intended to be used as an aid in determining the scope of the claimed subject matter.
The foregoing aspects and many of the attendant advantages of this invention will become more readily appreciated as the same become better understood by reference to the following detailed description, when taken in conjunction with the accompanying drawings, wherein:
Referring to
Referring to
The frame 12 includes post mounting brackets 21 coupled to the corners of the frame 12. The post mounting brackets 21 are preferably L-shaped in cross section and are received within similarly-shaped recesses formed within each corner of the frame 12. The post mounting brackets 21 are secured to the frame in any suitable manner, such as by welding, with fasteners, etc. A post 14 that is preferably quadrangular-shaped in cross section is received within each recess defined by the L-shaped post mounting bracket 21 so that the posts 14 extend upwardly and generally orthogonally from each corner of the frame 12. The posts 14 are preferably removably secured within the brackets 21 with any suitable fastening means, such as screws or bolts. It should be appreciated that the posts 14 may be removably received within the corners of the frame 12 in any other suitable manner without departing from the scope of the present disclosure.
The four posts 14 are preferably separated into first and second pairs 17 and 19. If the frame 12 is rectangular-shaped, the first pair 17 is located at the first short end of the frame 12, and the second pair 19 is located at the second short end of the frame 12. The rack 10 optionally includes two end frame members 28 that are mounted to the frame 12 near the lower ends of posts 14, with one end frame member 28 extending between the first pair of posts 17, and the other end frame member 28 extending between the second pair of posts 19. Optional first and second cross brackets 30 and 32 also extend between the first pair of posts 17 and between the second pair of posts 19 above end frame members 28. As such, the posts 14 in the first pair 17 are rigidly coupled together, and the posts 14 in the second pair 19 are rigidly coupled together.
Referring back to
The end frame members 28 and the cross brackets 30 and 32 may also include openings 34 for receiving fasteners. In this manner, a large dunnage structure may not only be removably coupled on its bottom surface to the frame 12, but it may also be removably mounted on its sides to the end frame members 28 and the first and second cross bracket 30 and 32. It should be appreciated that a dunnage structure may instead be removably mounted to the rack 10 in a variety of different ways without departing from the spirit and scope of the present disclosure. For instance, the dunnage structure 22 may also be removably mounted to the posts 14 and the post mounting brackets 21.
Any suitable dunnage structure 22 may be used with the rack 10. The dunnage structure 22 may be formed in any suitable shape and size so as to receive and support the product(s) to be shipped. The dunnage structure 22 may be formed from foam, plastic, cardboard, or another suitable material. The dunnage structure 22 is mounted to the rack 10 with suitable fasteners or in any manner that allows for removal of the dunnage structure 22 when it is no longer needed or a different type of dunnage structure 22 needs to be mounted to the rack 10.
Still referring to
The hinge 20 further includes a ring 44 that is slidably received on the post 14 and encircles the post 14 and the first and second collars 40 and 41. The ring 44 is sized such that it is prevented from sliding over the collars 40 and 41 at the bottom end of the collars near the pivot pin 42. A bumper 48 is secured to the outer surface of the upper post segment 16 between the upper ends of the collars 40 and 41. The bumper 48 is sized such that the ring 44 cannot slide on the post 14 over the bumper 48 (see
The posts 14 are moved between the upright and collapsed position by moving the upper post segment 16 about the pivot pin 42. Referring to
To move the posts 14 into the upright position, the upper post segment 16 is moved about the pivot pin 42 until it substantially aligns the lower post segment 18, as shown in
To conserve space during shipment and storage, the racks 10 are stackable in either the upright or collapsed position. To facilitate secure stacking of the racks 10 in the upright position, the lower post segments 18 include a male stack plug 36 formed on the lower end of the lower segments 18. The upper post segments 16 include a female stack plug cavity 38 formed within the top end of the upper post segment 16, as shown in
The racks 10 are also stackable in the collapsed position. As shown in
The customizable, reusable, returnable rack system includes first customizing the rack 10 for shipment of a certain type of product. To ship a first type of product, a first suitable dunnage structure 22 is mounted on a first rack 10 for receiving, supporting and protecting the first type of product during shipment on the first rack 10. The posts 14 are moved into the upright position, and a product is secured on the first rack 10. Other racks 10 with similar or different products may be stacked below or on top of the first rack 10 when positioned within a larger shipping container or transport device.
Once the product has been delivered, the first rack 10 can be collapsed for return shipment. The posts 14 of the first rack 10 and the other racks 10 are moved into the collapsed position such that the racks 10 may be stacked upon one another within the transport device. This maximizes use of the transport device or shipping container, thereby reducing overall shipping costs and making reuse of the racks cost effective. It should also be appreciated that instead of collapsing the posts 14, the posts 14 may be removed from the frame 12 such that only the frame 12 is returned for reuse or such that they are returned separately.
Each rack 10 having a certain type of dunnage structure 22 is reused for shipping a certain type of product until that type of product is no longer to be shipped (i.e., for the life of the product). For instance, a rack 10 having a first dunnage structure 22 may be used for shipment of a first type of product for the life of the first type of product. The first dunnage structure 22 remains on the rack 10 until the rack is no longer being used for shipment of the first type of product. When it is desired to use the rack 10 for shipment of a second type of product, the first dunnage structure 22 is removed from the rack 10 and a second dunnage structure 22 is mounted thereon. This cycle may continue for the entire life of the rack 10.
While illustrative embodiments have been illustrated and described, it will be appreciated that various changes can be made therein without departing from the spirit and scope of the present disclosure.
