This platform runs on a rolling ring drive and reciprocates automatically without motor reversal. Linear speed can be adjusted on the fly with a control knob on the assembly, without changing speed or reducing gears. No electronics or programming is needed - speed and travel direction are controlled mechanically. The platform is low maintenance, with no hydraulics or pneumatics, and only a light shaft lubrication once every three months in the linear drive. Adjustable end stops can increase or decrease length of travel. Precision-machined components limit vertical and horizontal platform movement to within ± 0.001 inches, and rolling ring bearings compressed against the shaft inside the drive make for zero play and backlash-free motion. A modified reversal mechanism makes for smooth, jarring and jerking-free reversal.
During a teardown of the iPad Air and Microsoft Surface Pro 3 at the Medical Design & Manufacturing Show in Schaumburg, Ill., an engineer showed this "inflammatory" video about the dangers of maliciously mishandling lithium-ion batteries.
The Window Watcher stops the burglar before he does damage or enters the house. House alarm service companies set off alarms and call the service only after the burglar has damaged and entered the house.
If you’re designing a handheld device or industrial machine that will employ a user interface, then you’ll want to check out the upcoming Design News Continuing Education Center course, "Engineering Principles Behind Advanced User Interface Technologies.”
Focus on Fundamentals consists of 45-minute on-line classes that cover a host of technologies. You learn without leaving the comfort of your desk. All classes are taught by subject-matter experts and all are archived. So if you can't attend live, attend at your convenience.