The Patented "Locking Collar" works by moving the fulcrum away from the center ring hub and onto the collar, where the aperture size in the outer collar "locks" the strut at the correct angle. This makes the dome much stronger than a conventional hub.
The Locking Collar makes it impossible for the strut to shear off from the hub, as the Locking Collar keeps the struts from moving beyond the angle needed to support the dome.
The Locking Collar can be made in various shapes, and is the only design on the market that can utilize metal rebar struts for building concrete domes.
Our Locking Collar is a Universal Connector that can work as an addition to any other type of Geodesic Dome Hub to provide added strength.
The strength of the Locking Collar design allows us to use the most simple type of hub possible, such as a center ring with the struts connected together by zip ties.
This type of hub would not be strong enough to build a geodesic dome without the Locking Collar.