Dismiss Notice
Join Physics Forums Today!
The friendliest, high quality science and math community on the planet! Everyone who loves science is here!

Controlled Spring Like Mechanism

  1. Dec 31, 2011 #1
    I have a need for a mechanism that acts juust like a spring (I pull, load it up, and when i let go it pulls away and returns to its normal length), but doesnt snap back like a spring.

    I have experiemented with automatic door closers, but they are definatly not the answer (require too much force to pull, take too much space, too long)

    Is there already a mechanism? Should i just use springs in parallel with a device like a pneumatic cylinder to control the return action? Idealy the system will only require a human to apply ~10lbs of force, and the spring/mechanism will expand ~5-10 inches, and when released, will contract with similar amount of force required to load the device
  2. jcsd
  3. Dec 31, 2011 #2
    What is the application?
Share this great discussion with others via Reddit, Google+, Twitter, or Facebook