Zero-backlash coupling designs include safety-, metal bellows-, and servo insert-type couplings. The safety couplings use a pre-stressed Bellville spring to disengage servomotors within 2 to 4 msec, compared to a full second for conventional couplings. Metal bellows couplings are designed with high torsional stiffness and low inertia, avoiding the resonance problems of many high performance drives. And servo insert-type couplings increase dampening without deformation. Rimtec Corp., FAX (630) 325-1404.
New glass coating, the design of which was inspired by two disparate examples in nature -- a moth’s eye and lotus leaf -- could mean significant improvements for solar panels, lenses, military equipment, windows, and other products in the future, thanks to the Department of Energy.
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