Issued patent
Multi-Link Spherical Joint
An issued NASA patent from the Technology Transfer catalog.
About this technology
Overview
Innovators at NASA Johnson Space Center have designed a spherical joint which allows up to six linearly actuated links or attachments to rotate about a co-located center. Originally designed to provide joint flexibility necessary for a variable geometry truss system, the new spherical joint also allows power and data lines to pass through it without the lines being subjected to structural forces. This technology can be key for creating a deployable, variable geometry truss system, with a compact form factor that can reduce payload volume within the confines of a launch or other transport vehicle. Typically, flexible truss systems rely on joints where each of the links do not rotate around the same point, creating instability in the joints and the entire structure. The Multi-Link Spherical Joint removes those instabilities, allowing for a durable and adaptable technology with multiple space and terrestrial applications.