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The Patented, Award-Winning Design

Roll ring flexures resemble wedding bands but thinner. These fit the grooves between inner and outer concentric cylinders to create  a precise, stable electrical coupling between the two. These flexures cannot escape the grooves. Even under high-G loading and other normal misalignments in operation, the machined-in geometry insures consistent contact. Circuits are grouped into modules, which contain the inner and outer grooved cylinder, the flexures, and a cap on each end of the device. These stand-alone modules can be assembled, tested, and stored-in air-and later assembled, in a housing designed to function in a vacuum. When the module is mounted in the final end unit, no additional adjustment is needed. Modules can be assembled is many different configurations. Shielded and non-shielded circuit sets can easily be separated or high and low voltage, high and low current and various other arrangements. The module just slips into the mechanism for final assembly. It normally takes less than 30 minutes.

Bearing and Power Transfer Assembly Low torque Negligible Debris

Power Transfer High transfer efficiency Current surge capability Multi-axis Gimbals Low torque High frequency

Rotary Joints Low torque High transfer efficiency High frequency Negligible debris

Solar Array Drives Low torque Negligible debris

Fine Pointing Low torque negligible debris High frequency

Benefits of Roll Ring Technology

Longer Life Lower Costs Pointing Resolution No debris eliminates the potential for intermittent data or power loss, insuring a longer and competent life span. Roll rings eliminate special handling and storage requirements. Less time in final assembly insures less cost than traditional slip rings. Greater than 100:1 torque reduction insures poiting resolution that far exceed those of slip ring technology.