PROTOTYPE OF THE FIRST ROPE PISTON
However, due to its wide cross-sectional area, its rated Pounds per Square inch rating resides at 3.17, Rise™ Robotics's current means of measuring its ultimate performance. Its application demonstration was to assist Hesham's lift project an affiliate of Rise™ Robotics. As with any new innovation, failure modes are not entirely understood. This design would fail imminently if the lines were ever tangled by improper handling.
Blake Sessions discovered a way of compacting and balancing the ancient Chinese Windlass mechanism as a cost effective way of efficiently converting rotary motion to linear motion. This compacted windlass approach is known as the "conical differential drive".
As a proof of concept, a 31 inch actuator was made utilizing a 1mm steel cable that could pull 45lbs over 100mm in an astounding 1.8 seconds. While weighing 300 grams.
stroke time (sec)
Mtbf - “life”