Originally Posted by
bikeguy55
This device allows the bike rider to re-position the handlebars safely and easily while in motion. The idea has been around for years but I believe I have a unique mechanical design.
While you may have a unique design, there is no safe method for repositioning the handlebar height while the bike is in motion unless you have an electronic lift stem which never disengages any locking mechanisms. (A worm-drive twin parallelogram lift similar to a derailleur cage comes to mind.) Any manual repositioning of the bars would mean that for a moment, the vertical position of the stem is unlocked. Should the rider encounter a surface variation causing a rapid reduction in speed while the bars are unlocked (curb, pothole, etc.) they stand to be pitched forward over the bars as the unlocked stem would buck forward under their weight.
Barring that issue:
Originally Posted by
bikeguy55
After riding with it for 2 years I have found it to relieve muscle tension, improve blood circulation in my hands and lower back and it really comes in handy when riding against a headwind.
The reasons you listed are precisely the reason for using ergonomic drop handlebars. Multiple hand positions (tops, hoods, hooks, drops) give different rider positions to change aerodynamics and allow for variable body position to promote circulation and alleviate numbness.
As a manufacturing engineer, I'm interested to see a design for it; but as a cyclist, I don't see much marketability for it.