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Roll Rings

A Better Way to Transfer Electral Energy   Roll rings are a patented technology, are ideal for the power and data transfer assemblies on your space platform. Now you can overcome the unavoidable problems of traditional slip rings and rotary transformers with an assembly that reduces costs, gives longer life performance and provides many other benefits. * Modular, flexible designs accommodate a variety of circuits. * The ability to transfer low to high data rates from DC to 200 Megahertz. * Power transfer ranging from subwatt to 100 Kilowatts.

* High performance margin 1553 compatibility. * Debris free operation eliminates the potential for equipment failure and short circuits. * Low and life-stable noise levels. * Only one percent as much torque as slip rings to reduce mechanism size, improve fine pointing and substantially lower energy use. * The ability to operate in air and vacuum environments and to be switched between the two. * No organic lubricant requirements. * Shorter assembly time and lower assembly and test costs.

An Alternative and Improved Technology In life testing our roll rings had completed 35 million revolutions by early 1994 and were still performing to original specifications. For example, this far exceeds the 10 million spins required of any device transmitting power across a rotating axis on a trip to Jupiter. Roll ring performance is based on a rolling technology - like ball bearings- replacing the previously standart frictional slip ring technology. Flexures in roll rings resembling thin wedding bands, fit between the grooves of inner and outer concentric cylinders, creating a precise, satble electrical coupling. So stable, in fact, the rings cannot escape the grooves even under high-G loading and misalignments in operation.

This technology enables to tailor the size of a power or data transfer assembly exactly to your needs. Because roll rings are simple and fast to build, then slip into a mechanism for final assembly. They can be assembled, tested, and stored in ais, then later operate in a vacuum, eliminating the need for an umbilical at launch.

Solving Problems in a Wide Ranger of Applications

The reliability and cost effectiveness of roll rings are just two of reasons they were selected by NASA as the baseline for the rotary joints on International Space Station. NASA sought the most advanced technologies for inclusion in the Space Station mindful of the ability to cut costs while providing total dependability. Roll rings are also ideal for any earth of space based application. The many benefits of roll rings make them ideal for a wide range of applications.

The patented roll rings in power and data transfer assemblies replace slip rings and rotary transformers to operate free of debris while offering low torque and an extended life span.