Kinematics with MicroStation Ch01C-I Grueblers Criteria for 3D 5 Bar

Created with MicroStation This video clip analyzes an ingenious Door Concept created by Klemens Torggler ( ) - a five bar mechanism that briefly transits into 3D space while opening/closing. Gruebler’s criteria may seem to suggest 5 bars are impossible. But that is only in 2D! In 3D, well constrained mechanisms with odd number of links are possible. With many thanks to Mr. Torggler for his kind permission to bring this to you! You can see more