08-28-2017, 01:03 AM
(08-27-2017, 10:06 PM)randyc Wrote: The idea must have come to me in a dream, ha-ha-ha. I can't recall seeing it before but when I first posted the idea on PM, two guys suggested that it was a form of "Sprag Clutch" whatever the heck that is !
A sprag clutch or bearing is designed to lock up (and apply torque) in one direction, but it freewheels in the opposite direction. Your design works in both directions obviously. I like it! I have a couple of internal pipe "wrenches" that work on a similar principal. Just the thing for installing or extracting a very short piece of pipe (like a close nipple) or things like a shower arm that broke off inside the wall.
Willie