Patent ID: 7458444

Claim:
A rotational facility comprising: a driving device, a barrel coupled to said driving device for being rotated and driven by said driving device, a wheel rotatably attached onto said barrel, and a braking device secured to said wheel for engaging with said barrel and for braking said wheel relative to said barrel, said braking device including a housing secured to said wheel and having a bore formed therein for rotatably attaching onto said barrel, and including at least one actuating member received in said housing and extended into said bore of said housing to engage with said barrel and to brake said housing and said wheel relative to said barrel, said housing including a brake member received therein for engaging with said at least one actuating member and for actuating said at least one actuating member to engage with said barrel, and said housing including a peripheral channel formed therein and defined by an inner peripheral wall and an outer peripheral wall for receiving said brake member therein, and said brake member including a bore formed therein and defined by an inner peripheral surface for rotatably attaching onto said inner peripheral wall of said housing, and including at least one braking element extended into said bore thereof for engaging with and for actuating said at least one actuating member to engage with said barrel.