Models, videos and explorers
Every mechanism has a concept model at real scale. Rotate them, watch the five strongest latches open and close with the clamp force shown live, or drag the numbers in two interactive explorers.
3D gallery
All 20 models in the browser with their numbers. Click a part to see where it sits, hide the lid, play the five animations.

Cam lever on steel stud
What pushes when it opens
Lift the lever with a slider and see the spring force, the seal squeeze and which way the springs turn the lever.

Over-center latch, spring-loaded
How the spring holds it shut
Drag the spring rate, the nut setting, the seal load, the stops, seal set and slack, and see the latch force, the seal pressure and the work to close.