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Deployable Compliant Rolling-Contact Element (D-Core)

ID: 2014-109 A structure that can go from a flat plane state to a bent state. It can be made out of water resistant material that is paper-like but strong.

Principal Investigator: Larry Howell

The deployable compliant rolling-contact element (D-CORE) can be manufactured from a single sheet, folded into a flat position, and deployed into a device capable of hinge-like motion. The D-­CORE consists of two cams that are connected by flexible bands to create a one-degree-of­ freedom angular joint with a moving instantaneous axis of rotation. In one configuration of the joint, motion is allowed in the flat position. In the second configuration, motion is restricted in the flat position. In the deployed position, both configurations function as a typical CORE joint. A translating platform which also folds flat is a derivative mechanism of the deployable CORE.

The deployable nature of the D-CORE is novel in that it can be manufactured from sheet goods and then deployed into its final functioning position. The D-CORE uses curved creases to transition the cams between the flat and CORE joint positions. Its deployability and that it is also manufacturable from a single sheet are qualities are not seen in the prior art.

The D-CORE and translating platform provide solutions to space constrained applications, where compact storage is needed. The joints can be stored in a flat state and deployed into a functional state. There is also no need for lubrication of the joint.

About the Market:
The ability to fold compactly makes the D-CORE a candidate for space-constrained applications, aerospace applications, minimally invasive medical devices, medical implants, and stowable furniture. For example, this joint could be used in artificial spinal disc replacements so that the incision needed to insert the device could be much smaller than the deployed size of the joint.

For more information, contact 801-422-6266

Links and Resources

  1. One Page Summary PDF
  2. Inventor Webpage - Larry Howell
  3. Inventor Webpage - Spencer Magleby
  4. Compliant Mechanisms Research Group Webpage