Jaime Jones, reporting to Sprint CEO Marcelo Claure, is president of the East Area for Sprint. His territory covers 28 U.S. states in 10 regions across the Northeast, Mid-Atlantic, Midwest, and South, as well as Puerto Rico and the U.S. Virgin Islands. Â» Read More.
Spring Loaded Hinges. One specific model of self closing door hinges, uses the friction caused by opening the door to pull a spring. This spring uncoils as the door is opened, and when you let go, the spring closes the door by pulling back to its natural state.
How do self-closing door mechanisms work? As the door is opened the arm is pulled along, expanding either the spring or the piston. On release, the spring or piston returns to its natural state, pulling the arm and the door along with them, closing the door again and exerting enough pressure to keep it closed.