What is a leggett and platt mechanism?

The Leggett & Platt mechanism is a type of reclining mechanism. But why is it suck a big deal? The Leggett & Platt mechanism, is the best when it comes to recliners due to its durability and its incredibly smooth recline. Leggett & Platt have been upgrading this relining system over the years in order to keep it as perfect as possible. Each year they increase its weight capacity, while making it lighter, and making its recline as smooth as possible. Many furniture companies use the Leggett & Platt mechanism in their furniture because of how renowned it is, and how good they are.